Instruction Manual Form 1387 February 2001
350 Series
350 Series Electrohydraulic Actuators Contents Introduction
............................... Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type Number Description . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 2 2 2 2
Installation
5 6 6 6 6 6 6 6
................................. Valve Body and Actuator . . . . . . . . . . . . . . . . . . . . . . Hydraulic Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seal Drain-Off Connection . . . . . . . . . . . . . . . . . . . . Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments
............................... 7 Zero/Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . 7
Bypass Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bolt-On Handwheels . . . . . . . . . . . . . . . . . . . . . . . . . Integrally Mounted Gear-Type Handwheels . . . . . Speed Control Valve . . . . . . . . . . . . . . . . . . . . . .
7 7 7 8 8
Changing Actuator Action . . . . . . . . . . . . . . . 9 Split-Range Operation . . . . . . . . . . . . . . . . . . . . 9 Principle of Operation . . . . . . . . . . . . . . . . . . . 10 Lock in Last Position . . . . . . . . . . . . . . . . . . . . . . . . 10 Fault-Correction Guide . . . . . . . . . . . . . . . . . . 12
Maintenance
.............................. Removing Casing Plate Assembly . . . . . . . . . . . . Cleaning Force Motor . . . . . . . . . . . . . . . . . . . . . . . Cleaning Primary Restrictions . . . . . . . . . . . . . . . . Checking and Adjusting Pump Pressure . . . . . . . Adjusting Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . Low-Pressure Nozzles . . . . . . . . . . . . . . . . . . . . . High-Pressure Nozzles . . . . . . . . . . . . . . . . . . . . . Replacing Oil Seals . . . . . . . . . . . . . . . . . . . . . . . . . Adaptor Plug O-Rings . . . . . . . . . . . . . . . . . . . . . . Upper Piston Rod Seal and Piston Seals . . . . . Lower Piston Rod Seal . . . . . . . . . . . . . . . . . . . . . Handwheel Maintenance . . . . . . . . . . . . . . . . . . . . . Bolt-On Handwheels . . . . . . . . . . . . . . . . . . . . . . . Integrally Mounted Gear-Type Handwheels . . .
12 12 12 13 13 14 14 14 14 15 15 15 15 15 16
W2286/IL
Figure 1. Type 350 Electrohydraulic Actuator with Bolt-on Handwheel on Design ED Valve
Mounting Actuator and Adjusting Stem Connection . . . . . . . . . . . . . . . . . . . . . . . . Type 350 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type 354 Actuator Mounting . . . . . . . . . . . . . . . . . Type 354 Valve Travel Adjustment . . . . . . . . . . . . Changing Type 354 Actuator Mounting . . . . . . . .
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 mm (2-13/16 Inch) Yoke Boss Bolt-On Handwheel . . . . . . . . . . . . . . . . . . . . . . . 90 mm (3-9/16 Inch) Yoke Boss Bolt-On Handwheel . . . . . . . . . . . . . . . . . . . . . . . 127 mm (5 Inch) Yoke Boss Integral Handwheel . . . . . . . . . . . . . . . . . . . . . . . 90 mm (3-9/16 Inch) Yoke Boss Integral Handwheel . . . . . . . . . . . . . . . . . . . . . . .
17 17 17 19 19 20 20 20 20 24 28 28 28 D100286X012
Bypass Valve and Handwheel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
350 Series Introduction Scope of Manual This instruction manual includes installation, operation, maintenance, and parts ordering information for Type 350 (figure 1) and 354 electrohydraulic actuators with and without optional cylinder bypass valve and speed control valve. Coverage of handwheels for Type 350 actuators is also included. Refer to separate manuals for instructions covering the control valve and accessories. Only persons qualified through training or experience should install, operate, or maintain these actuators. If you have any questions concerning these instructions, contact your Fisher sales office before proceeding.
Description The 350 Series electrohydraulic actuators are designed to operate sliding-stem and rotary-shaft control valves from standard electronic input signals and electric power supplies. These actuators contain all the elements necessary for control valve operation in electronic control systems. The motor, pump,
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transducer, and positioner are included in the actuator casing. For hazardous area applications, the actuator must be equipped with an explosion-proof motor and an intrinsically safe control circuit. Separate use of either an explosion proof motor or an intrinsically safe control circuit results in an actuator with no hazardous area rating. Refer to the motor nameplate and actuator nameplate for additional information.
Type Number Description Type 350—Electrohydraulic control valve actuator with threaded stem connection for use with sliding-stem control valves. Type 354—Electrohydraulic control valve actuator with splined valve shaft connection for use with rotary-shaft control valves.
Specifications Specifications for 350 Series actuators are shown in table 1. Some specifications may also be found on the actuator nameplate.
350 Series Table 1. Specifications
Input Signals(1) See table 2 Internal Resistance of Transducer Force Motor See table 2 Power Supply Required See table 3 Actuator Sizes Type 350: See table 4 Type 354: J Size 60 for 25.4, 31.8, 38.1, 44.5 or 50.8 mm (1, 1-1/4, 1-1/2, 1-3/4 or 2 inch) valve shaft spline diameter or J Size 80 for 63.5 mm (2-1/2 inch) valve shaft spline diameter Action Actuators with standard control circuits are fieldreversible between J direct (increasing input signal extends actuator piston rod) and J reverse (increasing input signal retracts actuator piston rod). Actuators with intrinsically safe control circuits are not field reversible; either a direct- or reverse-acting coil is required. Maximum Usable Output Thrust and Torque Type 350: See table 5 Type 354: See table 6 Bench Stroking Speed(2) J 8.6 mm/second (0.37 inches/second) for 8900 N (2000 pounds) output thrust or 318 NSm (2812 lbfSin) output torque and J 3.8 mm/second (0.15 inches/second) for 22200 N (5000 pounds) output thrust or 794 NSm (7031 lbfSin) output torque Maximum Actuator Travel Type 350: See table 4 Type 354: 90 degrees Pump Type Positive-displacement, gear-type pump with relief valves. Hydraulic Fluid Requirements 10.4 liters (11 quarts) of Type A automotive automatic transmission fluid. If the actuator is used in ambient temperatures below –4°C (25°F), use an aircraft-type hydraulic fluid that conforms to MIL-H-5606A specifications.
Operative Temperature(1) Weather-Proof Motor: –40 to 40°C (–40 to 104°F) Explosion-Proof Motor: –25 to 40°C (–13 to 104°F) Performance Hysteresis(1): 0.50 percent of span Load Sensitivity: Stem position change 0.3 to 1.0 percent of total travel per 488 Newton (100 pound) change in load Terminal-Based Linearity(1): ±2 percent of total travel Dead Band(1): Less than 0.5 percent of total travel Frequency Response(1): See figure 2 for typical frequency response curves Adjustments Zero and span adjustments located under cover (figure 3) Hazardous Area Classification Actuators with intrinsically safe actuator control circuits are available. Intrinsically safe control circuits are indicated by the presence of a special actuator nameplate and require an explosion-proof motor. Refer to the special actuator nameplate for information concerning use of the actuator in hazardous locations. The motor nameplate must also specify an explosion-proof approval. Motor Type See table 3. Motor type designations refer to the motor only; not to the entire actuator. Connections Power: 1/2-inch NPT female conduit connection on motor Input Signal: 1/2-inch NPT female conduit connection on side of casing Seal Drain Off: 1/4-inch NPT female connection with vent assembly on top of yoke. This connection is furnished only on 72 mm (2-13/16 inch) and 90 mm (3-9/16 inch) yoke boss sizes of the Type 350 actuators Approximate Weight Type 350 without Handwheels 72 mm (2-13/16 inch) Yoke Boss: 49 kg (110 pounds) 90 mm (3-9/16 inch) Yoke Boss: 64 kg (142 pounds) 127 mm (5-inch) Yoke Boss: 91 kg (200 pounds) Type 354 Size 60: 86 kg (194 pounds) Size 80: 123 kg (275 pounds)
1. This term is defined in ISA S51.1. 2. Stroking speed with actuator operating a valve under no load.
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350 Series Table 2. Input Signals, Internal Resistance, and Coil Part Numbers PART NUMBERS CONTROL CIRCUIT TYPE
ACTION
Either Field Reversible
Standard
Intrinsically safe
INPUT SIGNAL, mA dc
INTERNAL RESISTANCE, OHMS
Key 81, Stainless Steel
Key 37* 37 Coil Assembly
Key 124, Steel
Bias Spring
Feedback Spring
Weight
Weight
Key 166 Machine Screw, Steel
1-5
2200
2H2936000A2
1H309037022
1H308937022
1H681124092
1H681424092
1F546828992
4-20, 4-12, or 12-20
260
2J5228000A2
1H309037022
1H308937022
1H681124092
1H681224092
1P4252X0012
10-50
380
2H2935000A2
1H440337022
1H440237022
1H681124092
1H681324092
1F546828992
Direct(1)
4-20
160
23A1732X012
1H309037022
1H308937022
1H681124092
1H681324092
1F546828992
Reverse(1)
4-20
160
23A1733X012
1H309037022
1H308937022
1H681124092
1H681324092
1F546828992
1. Action must not be reserved. See the changing action section of this manual.
Table 3. Motor Types and Corresponding Power Supplies Required Explosion-Proof Motor(1)
Weather-Proof Motor Electrical Classification of Motor
Totally Enclosed; Continuous Service—Intrinsically safe control circuit not available with this motor
Explosion-proof (see motor nameplate for specific rating). Also check for special actuator nameplate to determine if actuator has intrinsically safe control circuit. Unless the control circuit is intrinsically safe and the motor is explosion proof, actuator cannot be used in hazardous atmospheres.
Type
Capacitor Start, Induction Run
Capacitor or Repulsion Start, Induction Run, Fan Cooled
Horsepower
1/3
Power Supply
115/230 ±10% Vac, Single Phase, 60 Hz
220/440 ±10% Vac, Three Phase, 50/60 Hz
115/230 ±10% Vac, Single Phase, 60 Hz
220/440 ±10% Vac, Three Phase, 50/60 Hz
Starting Current (Amps)
31 Max @ 115 Vac 15.5 Max @ 230 Vac
8 Max @ 220 Vac 4 Max @ 440 Vac
31 Max @ 115 Vac 15.5 Max @ 230 Vac
8 Max @ 220 Vac 4 Max @ 440 Vac
Running Current (Amps)
7.2 @ 115 Vac 3.6 @ 230 Vac
1.8 @ 220 Vac 0.9 @ 440 Vac
7.2 @ 115 Vac 3.6 @ 230 Vac
1.8 @ 220 Vac 0.9 @ 440 Vac
Speed
1725 RPM
1425/1725 RPM
1725 RPM
1425/1725 rpm
1/3
1. Explosion-proof classification pertains to the motor only, not the entire actuator.
13 mm (1/2 INCH) TRAVEL 29 mm (1-1/8 IN) TRAVEL 76 mm (3- INCH) TRAVEL TRAVEL ADJUSTMENT SCALE
13 mm (1/2 INCH) TRAVEL 29 mm (1-1/8 IN) TRAVEL 76 mm (3- INCH) TRAVEL
BIAS SPRING ZERO ADJUSTMENT
CASING PLATE ASSEMBLY
SPAN ADJUSTMENT FEEDBACK SPRING
W5568-1/IL
13A6501-A A1617-2/IL
NOTE: FOR 71mm (2-13/16 INCH) YOKE BOSS SIZE TYPE 350 ACTUATOR WITH 1 TO 5 mA DC INPUT SIGNAL (5% INPUT AMPLITUDE) AND 8896 N (2000 POUNDS) OUTPUT THRUST
mm (INCH)
Figure 3. Adjustments (Actuator is Shown with Cover Removed)
Figure 2. Typical Frequency Response Curves
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*Recommended spare parts
350 Series Table 4. Maximum Actuator Travel for Type 350 YOKE BOSS SIZE
Types 350 without handwheel 350 with handwheel
TRAVEL
mm
Inch
mm
72 90 or 127
2-13/16 3-9/16(1) or 5
38 76
1-1/2 3
Inch
72 90 127
2-13/16 3-9/16(1) 5
38 64 76
1-1/2 2-1/2 3
1. An actuator with this yoke boss size uses a 19.1 mm (3/4-inch) stem. When this size actuator stem is used, the valve stem must be less than the standard length.
Table 5. Usable Thrust Output of Type 350 Actuators at Maximum Travel (1) 350 (w/ or w/o handwheel)
Actuator Type 72 (2-13/16)
90 or 127 (3-9/16 or 5)
Travel, mm (Inch)
38 (1-1/2)
64 or 76 (2-1/2 or 3)
Gross Cylinder Output Thrust, N (Lb)
8896 (2000)
8896 or 22240 (2000 or 5000)
Usable Output Thrust, N (Lb)
8896 (2000)
8996 or 22240 (2000 or 5000)
Yoke Boss Size, mm (Inch)
1. Thrusts given are the thrusts available for operation of control valves. Under some conditions, such as with the valve plug stalled, higher thrusts can be developed. The control valve stem must be capable of withstanding this higher thrust; see “Maximum Thrust Output” section.
Table 6. Usable Torque Output of Type 354 Size 60 and 80 Actuators at Maximum Travel Gross Cylinder Output Thrust, N (Lb) Valve Disk or Ball Rotation, Degrees Usable Torque Output, NSm (LbfSin)
8800 (2000)
22000 (5000)
0-90
0-90
318 (2812)
794(1) (7031)(1)
1. Do not exceed torque capabilities of the valve shaft.
Table 7. Side-Mounted Handwheels for Type 350 Actuators YOKE BOSS SIZE, mm (INCHES)
OPERATION HANDWHEEL TYPE
72 (2-13/16)
Bolt-on
90 (3-9/16)
Bolt-on
127 (5)
Positioning of Valve
Non-Declutchable
Open or Close
Declutchable
Open, Close, or Throttle
Non-Declutchable
Open or Close
Declutchable
Integrally Mounted
Open, Close, or Throttle Open, Close, or Throttle(1)
Use As Travel Stop Up or Down ––– Up or Down
Action Required for Unrestricted Travel Neutral Position Neutral Position & Disengage Pin Neutral Position
MAXIMUM ACTUATOR TRAVEL WITH HANDWHEEL, mm (INCHES)
38 (1-1/2) 51 (2)
–––
Neutral Position & Disengage Pin
64 (2-1/2)
Up or Down
Neutral Position & Disengage Pin
76 (3)
1. Can also open or close valve in emergency without inserting engaging pin.
Installation Key numbers referenced in the following procedures are shown in figure 7 except where indicated. These actuators are normally shipped as part of a control valve assembly. That is, the actuator will be mounted on a control valve body and the connection between the actuator piston rod and valve will be assembled when the unit is received. Complete
instructions for the valve body are provided in a separate manual. If the actuator has been shipped separately for mounting on a control valve body or if the control valve body and actuator have been separated for maintenance, attach the actuator to the valve by following the appropriate steps in the mounting actuator section. Complete the remaining installation sections, and then complete the Actuator Mounting and Adjusting Stem Connection procedures.
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350 Series Valve Body and Actuator Install the valve body in the pipeline by following instructions in the appropriate valve body instruction manual. (Some rotary valves must be out of the pipeline in order to determine the closed position for actuator adjustment. These valves should remain out of the line until the actuator has been mounted and adjusted.) For proper operation, the actuator must be installed in a vertical position above the control valve body.
Hydraulic Fluid Clean the casing plate (key 19) to be certain no dust or other foreign material enters the casing (key 5). Unscrew the vent assembly (key 92). When filling the reservoir, use a funnel having a fine-screen strainer to prevent solid impurities from entering the casing. Use approximately 10.4 liters (11 quarts) of type A automotive-type automatic transmission fluid. If the motor and pump are to be started at ambient temperatures below –4°C, (25°F) use an aircraft-type hydraulic fluid (conforming to MIL-H-5606A specifications). Fill the reservoir to the centerline of the sight gauge (key 112). Replace the vent assembly after filling.
Electrical Connections Power Make power connections through the conduit connection on the motor. Refer to the wiring tag attached to the motor for instructions.
CAUTION Reversed motor rotation may damage the pump. Correct rotation is counterclockwise when viewed from the motor output shaft (clockwise when viewed from the fan end of the motor). Motor rotation is also indicated by an arrow on the motor mounting bracket.
Input Signal Note For intrinsically safe installations, refer to the special nameplate and the
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instructions provided by the barrier manufacturer for proper wiring and instructions. Do not attempt to reverse the action of an actuator with an intrinsically safe control circuit—refer to the warning in the Changing Actuator Action section. Remove machine screws and junction box cover (keys 86 and 85) from the bottom of the actuator casing. Insert the signal wires through the 1/2-inch NPT female connection in the side of the actuator. Provide a suitable conduit connector. For direct-acting actuators (increasing input signal extends actuator piston rod), connect the positive input signal wire to the positive (+) terminal and the negative wire to the negative (–) terminal. For reverse-acting actuators (increasing input signal retracts actuator piston rod) with standard control circuits, reverse the input wires on the terminals.
Seal Drain-Off Connection Some variations of these actuators are equipped with a double piston rod seal. If so equipped, the actuator is furnished with a vent (key 113, figure 8) installed in the yoke. This vent allows draining of oil that leaks past the high-pressure piston rod seal (key 12). If the drained oil will create a fire hazard, remove the vent and install a remote drain pipe to carry leakage to a safe location.
Startup Key numbers referenced in this procedure are shown in figure 7. Follow this procedure to ensure that the actuator is operational before putting it into service. Remove cover screws and cover (keys 88 and 87) from the top of the actuator. Note The machine screw (key 123) and two locknuts are installed in the force motor to protect the force motor during shipping. The force motor will not function until this screw is removed. Do not replace the screw unless the actuator is to be moved. Start motor and allow pressure lines to fill. Loosen, but do not remove, the pipe plug (key 114) on top of the piston rod. Allow air bubbles to bleed through the pipe plug connection until the bubbles cease to appear. Tighten pipe plug. Adjust per the following section.
350 Series Adjustments Before adjusting the zero and span, adjust the travel adjustment scale (see figure 3) to the travel required. Be certain the stem connector has been properly installed and adjusted per the Mounting Actuator and Adjusting Stem Connection section. If the actuator is equipped with an optional handwheel, be certain the handwheel engaging pin has been pulled out (if the handwheel is equipped with an engaging pin) and that the handwheel pointer is at the neutral position before proceeding.
figure 10). Rotate the stem only enough to open the valve (2 to 4 turns). Further rotation might damage the bypass plate (key 79, figure 10).
Handwheels for use with the Type 354 actuator are covered in separate manuals. Refer to the Type 1076 handwheel or other handwheel instruction manual as appropriate.
Zero/Span Calibration (see figure 3) With power connected to the motor, adjust the input signal to the signal (direct or reverse acting) which should correspond to the full up position of the piston rod assembly. Rotate the zero (bias spring) adjustment screw until the piston rod just begins to move down. Change the input signal to the opposite end of the input signal range and check the position of the piston rod assembly. If the rod has moved less than full travel, it indicates that the feedback spring has too much tension and that the span (feedback spring) adjustment screw is screwed into the spring too far. If the rod has moved full travel, start moving the input signal in the opposite direction to see where the piston rod assembly starts to move. This indicates if there is enough spring screwed onto the span adjustment. After each adjustment of the span (feedback spring) adjustment screw, the zero (bias spring) adjustment screw must be adjusted for the starting point (full up).
Bypass Valve and Handwheel Operation Bypass Valve Before using a handwheel, open the bypass valve (key 76, figure 7) so that fluid pressure will be equalized on either side of the actuator piston. Failure to equalize the pressures may make handwheel operation difficult or impossible. Note If the actuator is equipped with optional lock valves, the bypass must be opened to allow handwheel operation even if the motor has been turned off. To open the bypass valve, rotate the bypass valve stem (key 77, figure 10), located on the side of the actuator, counterclockwise. This rotation direction is indicated by an arrow on the bypass plate (key 79,
Bolt-On Handwheels Bolt-on handwheels (see figure 13) are available in either of two types, non-declutchable and declutchable. The non-declutchable type is shown in figure 13. With this type, there is no declutching mechanism, but the design of the handwheel nut allows unrestricted actuator travel when the handwheel is positioned so that the pointer (key 160, figure 13) is at the neutral position. The handwheel can be used to open or close the valve if used with a Type 350 actuator (see table 7).
To operate the non-declutchable handwheel, open the bypass valve and rotate the handwheel clockwise to close or counterclockwise to open the valve. The non-declutchable handwheel can also be used as a travel stop to limit either full opening or closing of the valve. With the handwheel pointer at the neutral position, travel is not restricted. As the pointer is moved from the neutral position, the handwheel mechanism will restrict travel in an increasing amount. Moving the pointer from the neutral position with clockwise handwheel rotation will restrict opening of the valve (counterclockwise rotation will restrict closing of the valve). The handwheel cannot be used to restrict opening and closing at the same time.
The declutchable bolt-on handwheel is similar to the handwheel shown in figure 13 except that the lever pin (key 153, figure 13) is replaced by a removable engaging pin (not shown). Unrestricted actuator travel is possible when the engaging pin is pulled out (engaging pin is retained by a cotter pin) and the handwheel is positioned so that the pointer (key 160, figure 13) is at the neutral position. The declutchable handwheel can be used to open, close, or throttle the valve regardless of the actuator type.
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350 Series To operate the declutchable handwheel, open the bypass valve. Rotate the handwheel to align the engaging pin holes in the levers (key 146, figure 13) with the hole in the handwheel body (key 142, figure 13). Insert the engaging pin. Rotate the handwheel clockwise to close or counterclockwise to open the valve. Install the cotter pin to retain the engaging pin. The declutchable handwheel cannot be used as a travel stop. If the actuator is moved from a valve having push-down-to-close action to one having push-down-to-open action or vice versa, a new handwheel nut and screw must be installed to retain counterclockwise-to-open handwheel action. Follow the handwheel disassembly instructions in the Maintenance section to change the nut and screw.
Integrally Mounted Gear-Type Handwheels Handwheels furnished on the 127 mm (5-inch) yoke boss size Type 350 are integrally mounted types as shown in figure 14. For the 127 mm (5-inch) yoke boss size Type 350 actuator, unrestricted actuator travel is possible when the engaging pin (key 159, figure 14) is pulled out and the handwheel is positioned so that the pointer (key 158, figure 14) is at the neutral position. The handwheels can be used to open, close, or throttle the valve. To operate the handwheel on 127 mm (5-inch) yoke boss size Type 350 actuators, open the bypass valve. Rotate the handwheel to align the engaging pin holes in the sleeve (key 170A, figure 14) with the hole in the piston rod (key 170B, figure 14). Insert the engaging pin. Rotate the handwheel clockwise to close or counterclockwise to open the valve. With the integrally mounted handwheel on Type 350 actuators, the valve can be opened or closed in an emergency without inserting the engaging pin. Rotate the handwheel until the sleeve (key 170A, figure 14) contacts either the stem connector or travel stop nut (keys 2 and 178, figure 14). Once the sleeve contacts the connector or travel stop nut, further movement of the sleeve will move the piston rod to open or close the valve. Either integrally mounted handwheel type can be used as a travel stop to limit either full opening or closing of the valve. With the handwheel pointer at the neutral position (and the engaging pin pulled out for Type 350 actuators), travel is not restricted. As the pointer is moved from the neutral position, full travel will be
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Table 8. 350 Series Feedback Spring Cutting Details Coil
MA Signal
Use Feedback Spring
Cut Feedback Spring to:
2J5228000A2 2J5228000A2 2J5228000A2 2H2935000A2
4-20 4-12 12-20 10-50
1H308937022 1H308937022 1H308937022 1H440237022
22-1/2 coils Do not cut Do not cut 26-1/2-30-1/2 coils
2H2936000A2 23A1732X012 23A1733X012
1-5 4-20 4-20
1H308937022 1H308937022 1H308937022
30-1/2 coils 22-1/2 coils 22-1/2 coils
1H3089-C A3925/IL
restricted in one direction when the travel stop nut or stem connector (keys 178 and 2, figure 14) contacts the sleeve (key 170A, figure 14). Moving the pointer from the neutral position with clockwise handwheel rotation will restrict opening of the valve (counterclockwise rotation will restrict closing of the valve). The handwheel cannot be used to restrict opening and closing at the same time. If the actuator is moved from a valve having push-down-to-close action to one having push-down-to-open action or vice versa, reassemble internal parts as follows to retain counterclockwise-to-open handwheel action. Remove the retainers, handwheel, bearings, and worm (keys 180, 182, 190, and 181; figure 14). Re-install these parts in the gear case opening opposite the opening from which the parts were removed. Refer to the disassembly instructions in the Maintenance section for assistance.
Speed Control Valve The optional speed control valve (see figure 12) can be used to restrict stroking speed in either direction of piston rod travel and can be reversed in the field to reverse the direction in which stroking speed is restricted. The speed control valve is located under the cover (key 87, figure 7) and is installed in the cylinder pressure line connected to the bottom of the cylinder. When the valve is installed with the arrow (see figure 12) pointing away from the cylinder, fluid flows freely to the bottom of the cylinder. Stroking speed to retract the piston rod is not restricted. However, when the piston rod is being extended, return fluid flow from the bottom of the cylinder is restricted by the speed control valve. This restricts stroking speed to extend the piston rod. The amount of restriction can be adjusted by rotating the control valve (key 220, figure 12) stem. Clockwise
350 Series
BN2617-B B0872-2/IL
Figure 4. Operational Schematic of Type 350 Actuator
rotation increases the amount of restriction. If it is desired to restrict stroking speed in the opposite direction, unscrew machine screws (key 222, figure 12) and remove the straps (key 221, figure 12). Remove the speed control valve and reverse it in the cylinder pressure line. Re-install straps and machine screws. The arrow on the speed control valve body indicates the direction of adjustable fluid flow through the valve.
Changing Actuator Action WARNING The action of a 350 Series actuator with an intrinsically safe control circuit must not be reversed in the field. The reversed input signal may create a spark capable of igniting a hazardous atmosphere, resulting in personal injury or property damage. (The reversed input signal will not operate the actuator.) A reverse-acting coil is required for reverse action with an intrinsically safe control circuit.
For actuators with standard control circuits, action can be changed from direct to reverse or vice versa, by reversing the positions of the input signal wires on the terminal strip (key 90, figure 7). For direct-acting actuators (increasing input signal extends actuator piston rod), the positive input signal wire is to be connected to the positive (+) terminal, and the negative wire to the negative (–) terminal. For reverse-acting actuators (increasing input signal retracts actuator piston rod), the position of the input wires are reversed on the terminals. Readjust zero and span after changing action.
Split-Range Operation The coil used for the standard 4 to 20 milliamp input signal can also be used for an equal 4 to 12 and 12 to 20 milliamp split. (Intrinsically safe control circuits cannot be used for split ranges.). For split-range operation with 1 to 5 milliamp input signal, coils specifically designed for split-range operation must be used. If an input signal change requiring a new coil is being made in the field, new bias spring, feedback spring, and weights (key 81, figure 7; key 124, figure 11) may be required. Check table 2 to determine which parts are required.
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350 Series For some coils and ranges, replacement feedback springs must be cut to length in the field. When measuring and cutting a spring, count the number of coils from the end of the spring that has the long, straight end. Leave enough extra spring wire to form the bend in the end of the spring. See table 8.
farther from nozzle C. The capping effect on nozzle D causes the operating pressure piped to the cylinder top to build. The unbalanced pressures acting on the piston cause the piston and piston rod to move downward. Fluid below the piston is exhausted through nozzle C.
Zero and span adjustments are made in the same sequence for both full-range and split-range operation except that only a portion of the full input signal is used for split-range operation. For example, with an equal two-way split using the 4 to 20 milliamp input signal, one actuator will be adjusted to begin travel at 4 milliamps and to reach full travel at 12 milliamps. The other actuator will be adjusted to begin travel at 12 milliamps and to reach full travel at 20 milliamps.
As the piston rod moves downward, the taper of the feedback cam allows the feedback lever to move to the left, decreasing tension in the feedback spring. Downward stem movement continues until tension in the feedback spring balances the force created by current in the force motor. When these forces are equal, the flappers are in a steady-state condition with the valve stem in the position dictated by the input signal. A decreasing input signal moves the coil in the opposite direction, moving the piston rod upward.
Principle of Operation This section describes operation of a direct-acting actuator (increasing input signal extends actuator piston rod.) The operation of a reverse-acting actuator is similar except that increasing input signal retracts the actuator piston rod. Refer to the operational schematic drawing in figure 4. An increase in the input signal applied to the coil causes the coil to move toward the force motor, pivoting a flapper closer to the nozzle at A and farther from the nozzle at B in figure 4. This increases the pressure in the bellows connected to nozzle A and reduces the pressure in the bellows connected to nozzle B. The unbalanced pressures in the bellows pivot a flapper closer to nozzle D and
10
Lock-in-Last Position Optional shutoff valves lock the piston rod and valve stem in position if electrical power or hydraulic pressures fail. In operation, the valves are held open by the force of the pressure from the top pump section. If electrical power or hydraulic pressure fails, the shutoff valve springs close the shutoff valves, locking existing pressure on either side of the piston and locking the piston rod in position. The lock-in-last position option will limit stem movement to 0.41 to 0.46 mm (0.016 to 0.018 inches) per hour after system stabilization with a stem load of approximately 1780 Newtons (400 pounds).
350 Series Table 9. Fault-Correction Guide Fault 1. Sluggish piston rod movement or no piston rod movement
Possible Cause
Check
Correction
Electrical system a. Machine screw (key 123) not removed
a. Remove cover (key 87) and check to be sure screw has been removed.
a. Remove screw and two locknuts.
b. Reversed motor rotation
b. Check power connections on motor and motor rotation arrow on mounting bracket.
b. Change motor power connections if necessary.
CAUTION Improper rotation could result in pump damage. c. Input signal not reaching actuator
c. Check input signal wires at terminal strip (key 90) to determine if input signal is reaching actuator.
c. If instrument supplying input signal is functioning, correct the input signal wiring.
d. Input signal not reaching coil
d. Check wires (keys 133, 128, and 130) at terminal plug (key 102), terminal strip (key 89, figure 12), and at coil (key 37) to determine if input signal is reaching coil.
d. Replace wires or terminals if necessary.
e. Coil shorted or dirty and does not move with change in input signal
e. Check coil resistance with ohmmeter (see table 2 for approximate resistance of the coils); inspect coil and magnet for dirt.
e. Replace coil assembly if shorted; clean coil and magnet per Cleaning Force Motor section.
a. Bypass valve not full closed
a. Check bypass valve on side of actuator.
a. Close bypass valve by rotating bypass valve stem (key 77, figure 14).
b. Pump relief valves improperly adjusted
b. Check per Checking and Adjusting Pump Pressure section.
b. Adjust per Checking and Adjusting Pump Pressure section.
c. Nozzles improperly adjusted
c. Check per Adjusting Nozzles section.
c. Adjust per Adjusting Nozzles section.
d. Primary restrictions plugged
d.
d. Clean per Cleaning Primary Restrictions section.
e. Seals leaking
e. If pump is supplying fluid at appropriate pressure and nozzles are adjusted properly, seal may require replacement.
e. Replace per Replacing Seals section.
2. Trapped air in suction side of pump
2. Be certain filter (key 117) is completely submerged in hydraulic fluid; check all fittings to be sure all are tight.
2. Adjust position of filter by loosening connection on pipe nipple (key 283, not shown) at the pump, re-positioning filter, and tightening connection. Tighten all loose fittings.
3.
3. Re-position actuator at 90 degrees to direction of pipeline movement.
Hydraulic system
2. Unusual pump noises
CAUTION Trapped air could damage pump; shut off motor and correct immediately. 3. Cycling operation
3. If all other elements in the system are functionally correct, problem may be extreme pipeline vibration.
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11
350 Series Fault-Correction Guide Table 9 is intended as a guide for isolating and correcting operating difficulties. Perform each check in order and check the operation of the actuator after each correction step. Key numbers referenced in this guide are shown in figure 7 except where indicated.
plate assembly, proceed as follows. Key numbers referenced in this procedure are shown in figure 7 except where indicated. 1. Clean the top surface of the casing plate (key 19) to avoid getting dirt in the casing (key 5). Unscrew and remove ten cap screws (key 20) from the casing plate. 2. When lifting the casing plate assembly, rotate it slightly back and forth to loosen the O-rings (key 23) that are held in the adaptor plug (key 21). Use care to avoid damaging the O-rings when lifting.
Maintenance WARNING To avoid personal injury and equipment damage, isolate the control valve from all pressure, shut off power, and relieve trapped pressure from the valve body before attempting disassembly.
3. If it is not necessary to move the casing plate assembly away from the actuator, cover the feedback cam (key 17) with a piece of cardboard and prop the casing plate assembly against the cam. Rest the motor end of the assembly on the casing. 4. If the casing plate is to be moved away from the actuator, disconnect the wire assembly (key 128) from the terminal strip (key 89, figure 11) located on the pilot block (key 57, figure 11).
Parts are subject to normal wear and must be periodically inspected and replaced as necessary. The frequency of inspection and replacement of parts depends upon the severity of service conditions. Establish a routine maintenance schedule after the severity of service conditions is known.
5. Use reasonable care in handling the casing plate assembly. Flexures (keys 50, 53, and 54; figure 11) used to mount the flappers (keys 46, 48, and 67; figure 11) can be damaged if the assembly is handled roughly.
Hydraulic fluid must be checked periodically. Check fluid level through the sight gauge (key 112, figure 7) located on the side of the actuator. Fluid level should reach the centerline of the sight gauge. The level should be checked often when the actuator is first installed. Once the rate of fluid usage is known, establish a routine inspection schedule.
7. Before replacing the casing plate assembly, be certain the wire assembly (key 128) is connected to the terminal strip (key 89, figure 11). Carefully guide the adaptor plug over the feedback cam and onto the cylinder cap assembly (key 8).
Before adding hydraulic fluid, clean the casing plate (key 19, figure 7) to prevent foreign material from entering the casing. Unscrew the vent assembly (key 92, figure 7) and add fluid through a funnel having a fine-screen strainer. Hydraulic fluid should be drained and replaced at least once a year. When changing the fluid, also change the filter (key 117, figure 7). To change the filter, first remove the casing plate assembly in accordance with the following section. Then, unscrew the machine screw (key 120, figure 7), and remove the filter support and element (keys 119 and 117, figure 7). Install the new filter element and secure with the filter support and machine screw.
Removing Casing Plate Assembly Internal parts, except the piston and cylinder, can be removed as an assembly. This assembly can be replaced with a stand-by assembly to allow normal operation during maintenance. To remove the casing
12
6. Inspect the three O-rings (key 23) in the adaptor plug (key 21); replace if necessary.
Cleaning Force Motor Key numbers referenced in this procedure are shown in figure 7. The force motor coil assembly (key 37) must be free to move toward and away from the magnet (key 38) in response to changes in the input signal. Accumulation of dirt or other foreign material on the coil or magnet can hinder coil movement and cause faulty actuator operation. To clean the magnet and coil, proceed as follows. 1. Unscrew the cover screws (key 88) and remove the cover (key 87). 2. Disconnect wires (key 130) from the coil. Unscrew and remove the machine screw (key 121). 3. Loosen the machine screw (key 25). Remove the magnet and coil assemblies. 4. Remove dirt and other foreign material from the coil and magnet by picking it off with cellophane tape.
350 Series CAUTION Individual components of the coil and magnet assemblies are not field replaceable. Order a new coil or magnet assembly if repair is necessary. 5. After cleaning, reassemble in reverse order of the above steps. Be certain the wires (key 130) have enough slack to allow the coil to move in response to changes in input signal.
Cleaning Primary Restrictions Key numbers referenced in this procedure are shown in figure 7 except where indicated. Over a long period of time, especially under dirty operating conditions, the primary restrictions (key 73, figure 11) may become partially clogged. This will result in sluggish actuator operation. To clean the restrictions, proceed as follows. 1. Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section. 2. Unscrew the two restriction fittings (key 73, figure 11) from the amplifier base (key 72, figure 11). 3. Run a cleaning wire through the 0.64 mm (0.025-inch) orifices in the fittings; then wash out the openings. 4. If necessary, loosen the pipe nipple (key 283, not shown) at the pump (key 196). Rotate the filter (key 117) into the hydraulic fluid. 5. Disconnect the high-pressure tubes (keys 104 and 105) from the amplifier assembly. Loosen the high-pressure tube fittings at the pump. Rotate the high-pressure tubes until the tube ends are submerged in hydraulic fluid. Tighten the pump tube fittings. 6. Be certain the casing plate assembly is solidly propped on the casing. Start the motor to flush the hydraulic amplifier. Let the motor run for approximately 5 minutes. 7. If necessary, install new O-rings (key 74, figure 11) on restriction assemblies. 8. Re-install restriction assemblies into the amplifier block. Tighten securely. 9. Re-connect and tighten high-pressure tube fittings. Re-position the filter and tighten the filter tube fitting.
Checking and Adjusting Pump Pressure Key numbers referenced in this procedure are shown in figure 7 except where indicated.
1. Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section. 2. Disconnect the high-pressure tubes (keys 104 and 105) from the amplifier assembly. 3. Connect two 50-bar (600 psig) pressure gauges to the ends of the high-pressure tubes. 4. If necessary, loosen the connection on the pump end of the pipe nipple (key 283, not shown) and rotate the filter (key 117) under the hydraulic fluid. 5. Be certain the casing plate assembly is solidly propped on the casing.
CAUTION When checking pressure, allow the motor to run only an instant (just long enough to bring the pressure indication on the gauges to maximum), or overheating and damage to the motor may result. Turn on the motor and read the pressure gauges. 6. Both gauges should indicate pressure between 34.5 and 36.2 bar (500 and 525 psig). 7. Each pump section has an adjustable relief valve located on the side of the pump opposite the output connections. Remove cap nuts covering the relief valve adjustments. Use a screwdriver to adjust the relief valves. Replace cap nuts immediately after adjusting to prevent air from entering the system. 8. After adjusting, run the motor for an instant to check output pressure. Re-adjust relief valves if necessary. 9. When adjustments are complete, remove the 50 bar (600 psig) pressure gauges. Loosen high pressure tube fittings at the pump and rotate the tubes until the ends are submerged in hydraulic fluid. Tighten high-pressure tube fittings at the pump. 10. Disconnect the low-pressure tube (key 103) from the block (key 57, figure 11), and attach a 10 bar (75 or 100-psig) pressure gauge to it. 11. Be certain the casing plate assembly is solidly propped on the casing.
CAUTION When checking pressure, allow the motor to run only an instant (just long enough to bring the pressure indication on the gauges to a maximum), or overheating and damage to the motor may result.
13
350 Series Turn on the motor and read the pressure gauge. 12. The gauge should indicate pressure between 3.4 and 4.1 bar (50 and 60 psig). 13. The low-pressure pump section has an adjustable relief valve located on the side of the pump opposite the output connection. Remove the cap nut covering the relief valve adjustment. Use a screwdriver to adjust the relief valve. Replace the cap nut immediately after adjusting to prevent air from entering the system. 14. After adjusting, run the motor for an instant to re-check output pressure. 15. Re-adjust the relief valve if necessary. 16. When adjustment is complete, remove the pressure gauge. Re-connect and tighten all tubing connections. Return the filter to the normal position. 17. If no further maintenance is necessary, replace the casing plate assembly on the casing.
Adjusting Nozzles If the nozzles (keys 71 and 64, figure 11) require adjustment or if the amplifier has been disassembled, adjust as follows. Key numbers referenced in this procedure are shown in figure 11 where indicated. Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section.
Low-Pressure Nozzles 1. Remove two machine screws and spray shield (keys 122 and 127) from the amplifier base (key 72). To adjust nozzles, it is necessary to attach a 5 bar (60 psig) pressure gauge to each of the holes from which the machine screws were removed.
figure 7). The flapper should rest firmly on the nozzle but should not bend. 3. Loosen the locknut (key 36) located on the left nozzle (key 71).
CAUTION To avoid damage to the flappers and flexures, move the beam (key 39) and coil (key 37, figure 7) carefully. 4. With the beam (key 39) moved to the right, rotate the left nozzle (key 71) until there is a clearance between the nozzle and left flapper (key 46) of approximately 0.10 mm (0.004 inches). 5. Disconnect the high-pressure tubes (keys 104 and 105, figure 7) from the amplifier assembly. Loosen the connections on the pump end of the tubes and rotate the tubes until the ends are submerged in hydraulic fluid. Retighten the pump connections. If necessary, loosen the pipe nipple (key 283, not shown) connection on the pump and rotate the filter (key 117, figure 7) until it is submerged in hydraulic fluid. 6. Start the motor and observe the pressure gauges in the amplifier. Each gauge should register approximately 1.9 to 2.2 bar (28 to 32 psig) when the beam (key 39) is moved to the center of beam travel. 7. If pressure is not 1.9 to 2.2 bar (28 to 32 psig) on each gauge, rotate the left nozzle (key 71) only up or down until the pressure is correct. 8. When the beam is moved manually through full travel, each gauge should vary from approximately 1.0 bar (15 psig) to the pump supply pressure of 3.4 to 4.1 bar (50 to 60 psig). 9. When the adjustment is correct, remove the pressure gauges and return the pressure lines and filter to operational position. Replace the spray shield and machine screws.
Note The machine screw holes are tapped 1/4-inch (28 UNF) and will not accept pipe threads. Provide suitable adaptors to convert from the machine screw threads to the pressure gauge threads. In the following steps, the directions right and left are given assuming that the amplifier is being viewed as shown in figure 11. 2. Loosen the locknut found on the right nozzle located on the amplifier base (key 72). Adjust the nozzle so that the right flapper (key 48) will act as a stop and result in approximately 1.6 to 2.4 mm (1/16 to 3/32-inch) clearance between the coil assembly (key 37, figure 7) and the outer pole piece (key 38B,
14
High-Pressure Nozzles To adjust high-pressure nozzles (key 64), first be certain the bellows beam (key 67) is at rest. Use feeler gauges to measure the clearance between each ball (key 66) and bellows bolt (key 68). Using two 0.009 inch feeler gauges, loosen the locknut (key 65) and rotate the nozzle(s) up or down for a total of 4.6 mm (0.18 inch) clearance.
Replacing Oil Seals Key numbers referenced in the following procedures are shown in figure 7 except where indicated. Remove the casing plate assembly per instructions in the Removing Casing Plate Assembly section above.
350 Series Disconnect the wire assembly (key 128) from the terminal strip (key 89, figure 11). Completely remove the casing plate assembly from the actuator.
Adaptor Plug O-Rings Remove the three O-rings (key 23) from the adaptor plug (key 21) and replace with new O-rings.
Upper Piston Rod Seal and Piston Seals 1. Remove the drain plug (key 111) and drain hydraulic fluid from the casing (key 5). 2. Disconnect all tubing connections from the cylinder cap assembly (key 8).
Lower Piston Rod Seal 1. Remove the drain plug (key 111) and drain hydraulic fluid from the casing (key 5) if this has not already been done. For 122 mm (5-inch) yoke boss size Type 350 actuators with handwheel, pull out the engaging pin (key 159, figure 14). 2. Follow the appropriate procedure below: a. For Type 350 actuators, remove the stem connector assembly (key 2, figure 8) from piston rod (key 16, figure 8). b. For Type 354 actuators (figure 9), remove the snap rings (key 202, 213, and 214). Loosen the clevis locknut (key 201). Disconnect the clevis (key 2) by first removing the snap ring and pin that are in the clevis. Unscrew the clevis and clevis locknut from the piston rod (key 16, figure 8). Remove the clevis boot (key 212).
3. Using care to avoid scratching the cam surface, unscrew the feedback cam (key 17) from the feedback rod (key 16B). Install a new O-ring (key 18) on the feedback cam.
3. Disconnect all wiring from casing (key 5).
4. Unscrew and remove the tie rod nuts (key 10). Remove the cylinder cap (key 8D).
4. Remove cap screws (key 4, figure 5). Remove entire casing (key 5) from yoke (key 1, figure 8).
5. Remove the felt oil seal (key 8A) and install a new seal. Remove the O-ring and backup ring located between the guide bushing (key 8B) and cylinder cap. When installing the new O-ring and backup ring, be certain the backup ring is installed adjacent to the cap (on the side of the O-ring opposite the guide bushing). Be certain the O-ring is not twisted.
5. The hex portion of seal bushing (key 13) is now exposed and can be used to unscrew the bushing from casing.
6. Install a new O-ring (key 192) on the cylinder cap. 7. To replace the piston seal parts (keys 15 and 136), remove the cylinder (key 6) from the cylinder base (key 7).
CAUTION Do not attempt to disassemble the feedback rod (key 16B) or piston (key 16C) from the piston rod (key 16A). The reassembly of these parts involves special procedures and sealant and is extremely difficult to perform in the field. Order a new piston rod assembly if replacement is required. 8. Remove the O-ring and two backup rings (keys 15 and 136) from the piston. Replace with new parts, making certain the O-ring is installed between the two backup rings and is not twisted. Install the new O-ring on the cylinder base (key 7). 9. If it is not necessary to replace the lower piston rod seal (key 12), reassemble in the reverse order of the procedure used to disassemble. Tighten the tie rod nuts (key 10) evenly to prevent binding the piston.
6. Remove old O-ring and backup ring (keys 12 and 137) from bushing. When installing new O-ring and backup ring, be certain the backup ring is on the side of the O-ring facing the hex end of the bushing. Install new O-ring facing the hex end of the bushing. Install new O-ring (key 14) on threaded end of bushing. 7. If the cylinder has been disassembled per the previous section and it is desired to replace the O-ring (key 11) between the cylinder base (key 7) and casing (key 5), disconnect tubing from cylinder base, remove base, and install new O-ring. 8. Reassemble in the reverse order of the procedure used to disassemble. Tighten cylinder tie rod nuts (key 10) evenly to avoid binding the piston.
Handwheel Maintenance Refer to the separate Type 1076 handwheel instruction manual for information of the Type 1076 handwheel for use with the Type 354 actuator.
Bolt-On Handwheels Key numbers referenced in this procedure are shown in figure 13 except where indicated. Non-declutchable handwheels include a grease fitting (key 169). Periodically, use this fitting to lubricate with a good-quality general-purpose grease. If it is necessary to disassemble the handwheel assembly, use the following procedure.
15
350 Series 1. Disconnect levers (key 146) from the stem connector assembly.
procedure are shown in figure 14 except where indicated.
2. To remove the handwheel assembly:
1. Remove the stem connector (key 2) and pointer (key 158) from the sleeve. For 127 mm (5-inch) yoke boss size, be certain the engaging pin (key 159, figure 14) is removed from the sleeve and piston rod.
a. For 90 mm (2-13/16 inch) yoke boss size, remove the handwheel-mounting cap screws and U-bolt (key 166). b. For 127 mm (3-9/16 inch) yoke boss size, unscrew the hex nuts (keys 144 and 170) from the U-bolts (keys 143 and 166). 3. Follow the appropriate procedure: a. For declutchable handwheels, remove the cotter pin from the engaging pin, and pull out the engaging pin. b. For non-declutchable handwheels, remove the snap ring (key 154), and drive out the lever pin (key 153). 4. To release the levers (key 146), unscrew and remove two machine screws and nuts (keys 156 and 158). 5. Unscrew and remove the pointer screw (key 161) and the pointer bolt that is located behind the pointer (key 160). 6. Unscrew the nut (key 54) and remove the handwheel (key 51). Be careful to avoid losing the ball and spring (keys 55 and 56). 7. Loosen the set screw (key 168). Unscrew and remove the bearing retainer (key 136). The bearing will be removed with the retainer. 8. Pull out the screw assembly (key 145). The operating nut (key 132) will be removed with the screw assembly. Remove the bearing (key 152).
2. Remove the drain plug (key 111, figure 7), and drain the casing. 3. Remove the cap screws (key 199, figure 14). Lift the entire casing and attached adaptor and piston rod off the yoke. 4. Rotate the handwheel until the sleeve (key 170A, figure 14), is free of the worm gear (key 174). Remove the sleeve. 5. Unscrew cap screws (key 176, figure 14). Remove the gear case and attached parts. Remove the retainer (key 175, figure 14). Remove the worm gear (key 174, figure 14) and two bearings (key 173, figure 14). 6. To remove the worm shaft (key 181) and bearings (key 190): a. Loosen the set screws (key 186) in the gear case and, for 127 mm (5-inch) yoke boss size, in the handwheel cap (key 185). b. Unscrew the handwheel cap or hex nut (key 185) and remove the handwheel. Be careful to avoid losing the ball and spring (keys 188 and 189). c. Unscrew the worm shaft retainers (keys 179 and 180). Remove the worm shaft (key 181) and bearings (key 190). 7. Before reassembling, pack all bearings with a good-quality, general-purpose grease. Apply Lubriplate No. 130A lubricant or equivalent to the surface of the sleeve, worm shaft, worm gear, and ball.
Integrally Mounted Gear-Type Handwheels
8. Reassemble following steps 1 through 7 of this procedure, but in reverse order. If the handwheel was disassembled to reverse the direction of rotation required to open the valve (this would be required if the actuator were being taken off a valve with push-down-to-open action and re-installed on a valve with push-down-to-close action or vice versa), install the worm shaft (key 181) and retainers (keys 179 and 180) into the gear case hole opposite the hole from which these parts were removed. Also, for 127 mm (5-inch) yoke boss Type 350 actuators, install the gear case rotated 180 degrees from original position.
Lubricate the handwheel mechanism periodically with a good-quality general-purpose grease. On the 127 mm (5-inch) yoke boss size, a grease fitting (key 187, figure 14) is provided for this purpose. If you need to disassemble the handwheel mechanism, use the following procedure. Key numbers referenced in this
9. When reassembling, adjust the bearings as follows. Tighten the set screws (key 171, figure 14) to eliminate free play in the bearings. Overtightening the set screws will make handwheel operation difficult. Lock the set screws in place with hex nuts (key 191, figure 14).
9. Before reassembling, pack the bearings with a good-quality general-purpose grease. Apply Lubriplate No. 130AA lubricant or equivalent to the screw assembly threads, the ball, and the tips of the guide bolts (key 167). 10. Reassemble following steps 1 through 8 of this procedure, but in reverse order.
16
350 Series Mounting Actuator and Adjusting Stem Connection Type 350
with the valve seat ring, or damage to the valve seating surfaces may result. Be certain the plug is off the seat before rotating the stem.
1. Mount the actuator on the valve; secure with the valve yoke locknut [eight cap screws and nuts for 127 mm (5 inch) yoke boss size].
Minor travel adjustments can be made by loosening the stem connector slightly, tightening the stem locknuts together, and screwing the stem into or out of the stem connector by using a wrench on the locknuts.
2. Remove the stem connector assembly (key 2, figure 8). Thread the stem locknuts (key 198, figure 14) all the way onto the valve plug stem thread. If the actuator is equipped with a torque arm (key 100, figure 8), place it on the locknuts.
6. After adjustment is complete, tighten the stem connector securely, lock the stem locknuts against the stem connector, and adjust the travel indicator scale (key 97, figure 8) to show valve plug position.
3. Position the valve plug as follows: a. For valves with push-down-to-close action, position the valve plug on the seat. b. For valves with push-down-to-open action, move the valve plug to the open position. 4. Start actuator and proceed as follows: a. For valves with push-down-to-close action, adjust the input signal to retract the actuator piston rod fully. Then, vary the input signal to extend the piston rod an amount equal to the rated travel of the valve. Clamp the piston rod to the valve stem with the stem connector assembly. b. For valves with push-down-to-open action, adjust the input signal to extend the actuator piston rod fully. Move the valve plug stem to the piston rod; clamp the valve stem and piston rod together with the stem connector assembly. 5. Attach the torque arm to the stem connector with two cap screws (key 101, figure 8). Cycle the actuator and check to be sure that full travel is being reached and that the valve plug seats.
CAUTION Do not use wrenches or other tools directly on the valve plug stem, or damage to the stem surface and subsequent damage to the valve packing may result. Never rotate the valve plug stem while the valve plug is in contact
7. Make final adjustments to establish the starting point of valve travel (zero) and to obtain full travel for the given input signal range (span) per the Adjustments section.
Type 354 Actuator Mounting Use the following steps to connect a valve body and actuator that have been ordered separately. Key numbers used in this procedure are shown in figure 9. 1. Unscrew the cap screws and washers (keys 256 and 254), and remove the cover (key 273). If a Type 1076 handwheel is used with the actuator, it will be removed with the cover. 2. If the lever (key 262) is attached to the connecting rod (key 252), remove the cap screw and nut (keys 266 and 275). 3. Consult figure 5 for available mounting styles and positions. The actuator must be positioned vertically with the actuator casing above the valve (position 1 in figure 5). Positions 2 and 4 may be used only if the pipeline is vertical and the actuator casing is above the valve. 4. Mount the actuator to the valve body, and secure it with the valve mounting cap screws. When mounting the actuator, make sure that the bushing (key 261) and valve shaft are in line so that the bushing will slide onto the valve shaft without getting damaged. 5. Apply lubricant (key 277 or equivalent) to the valve shaft spline. 6. Consult the appropriate valve body instruction manual for lever/shaft orientation marks, and slide the lever into place. Consult figure 6 for the appropriate lever operating clearance.
17
350 Series VALVE SERIES OR DESIGN MOUNTING
ACTION(1)
Right-hand
PDTC PDTO
V150, V200, V250, V300 A B
Left-hand
PDTC PDTO
C D
B A
CV500 & V500 A B
C D
D C
8532, 8560 & 9500
1. PDTC—Push-down-to-close; PDTO—Push-down-to-open.
43A6505-A C0683/IL
Figure 5. Mounting Styles and Positions for the Type 354 Actuator
7. Tighten the cap screw (key 268) to a torque of 271 NSm (200 lbfSft). 8. Rotate the lever until the cap screw hole is aligned with the rod end bearing on the connecting rod (key 252). If necessary, loosen the hex nuts (key 251) and rotate the connecting rod to align the rod end bearing with the lever. 9. Apply locking compound (key 276 or equivalent) to the thread of the cap screw (key 266). 10. Connect the lever to the rod end bearing with the cap screw and washer (keys 266 and 284). Tighten the cap screw to a torque of 271 NSm (200 lbfSft). 11. Note the valve disk or ball position and direction or rotation.
18
12. Position the travel indicator (key 153) according to the valve disk or ball position just noted. Replace the cover (key 273), and secure it with the washers and cap screws (keys 254 and 256). If the holes in the cover and housing (key 269) do not align, temporarily loosen the cap screws (key 278), and shift the housing slightly. Do not stroke the actuator while the cover is off. 13. If the Type 354 actuator is equipped with an auxiliary handwheel actuator, make certain that a cylinder bypass is also used to equalize cylinder pressure during handwheel operation. Operating the handwheel actuator against the force of the cylinder pressure will be difficult or impossible.
350 Series For push-down-to-open valves (extending piston rod opens valve), rotate the connecting rod to adjust the connecting rod length so that the valve will be fully closed when the actuator piston rod is fully retracted. Use care to avoid stroking the valve beyond the fully closed position. Tighten the hex nuts on the connecting rod when adjustment is complete. 3. Loosen the screws (key 255) and adjust the travel indicator (key 153). Retighten the screws.
Changing Type 354 Actuator Mounting 1. If it is necessary to change the Type 354 actuator mounting position, isolate the valve from all pressure. Shut off power to the actuator. 2. Unscrew the cap screws and washers (keys 256 and 254), and remove the cover (key 273). 3. Remove the cap screw and washer (keys 266 and 284). Move the connecting rod (key 252) out of the lever (key 262).
A3922/IL
Figure 6. Type 354 Lever Operating Clearance
4. Note the orientation of the lever (key 262) and valve shaft. Loosen the cap screw (key 268).
CAUTION CAUTION Attempting to operate the Type 354 actuator when an auxiliary manual actuator is engaged could damage the splined valve shaft. Be certain the manual actuator is disengaged before operating the Type 354 actuator. 14. Tighten the hex nuts (key 251) on the ends of the connecting rod (key 252). 15. If you want to adjust travel, refer to the next section.
Type 354 Valve Travel Adjustment 1. Loosen the hex nuts (key 251) on the ends of the connecting rod (key 252).
Do not use a hammer or similar tool to drive the lever (key 262) off the valve shaft. Driving the lever could damage internal valve parts. On some valve types, driving the lever could move the valve disk and bearings away from the centered position, resulting in subsequent damage to valve parts as the valve is operated. If necessary, use a wheel puller to remove the lever. It is permissible to tap the wheel puller screw lightly to loosen the lever, but hitting the screw with excessive force could also damage valve parts or disrupt the centered position of the valve disk and bearings.
2. Consult the appropriate valve body instruction manual for determining the closed position of the valve. Then, perform one of the following:
5. Remove the lever.
For push-down-to-close valves (extending piston rod closes valve), rotate the connecting rod to adjust the connecting rod length so that the valve will be fully closed when the actuator piston rod is fully extended. Use care to avoid stroking the valve beyond the fully closed position. Tighten the hex nuts on the connecting rod when adjustment is complete.
7. Remove the actuator.
6. While supporting the actuator, unscrew the cap screws that attach the actuator to the valve or unscrew the cap screws (key 278) that attach the housing (key 269) to the mounting yoke (key 260).
8. Refer to the Type 354 actuator mounting section to replace the actuator in the desired position.
19
350 Series Parts Ordering
Key
Description
When corresponding with your sales representative about this equipment, state the serial number of the unit. The serial number can be found on the nameplate and on the serial number plate (key 140, figure 7). If a new casing plate assembly has been installed in the actuator, the serial number on the nameplate may not be the same as the serial number on the serial number plate. State both numbers if they are different.
25 26 27 28 29 30 31 32 33 34 35 36 37* 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59* 59A 59B* 59C 59D 59E* 59F 59G 59H 59J* 59K 60 61 62 63* 64 65 66 67 68 69 70 71 72 73 74*
Machine Screw, pl steel Follower Pivot Pin Bearing Shaft Ball Bearing E-Ring Travel Adjustment Knob Travel Adjustment Pointer Travel Adjustment Scale, brass Machine Screw, pl steel Washer, pl steel Hex Nut, pl steel Coil Ass’y Magnet Ass’y Coil Beam, aluminum Coil Beam Base, steel Spring Beam, pl steel Coil Beam Support, steel Machine Screw, steel Cap Screw, pl steel Bias Spring Bracket, pl steel Flapper, SST Adjusting Screw, aluminum Flapper Strip, SST Adjusting Screw Nut, 416 SST Flexure Strip, SST Spring Clamp, 416 SST Flexure Strip Block, steel Flexure Strip, SST Flexure Strip, SST Machine Screw, pl steel Machine Screw, pl steel Pilot Mount, aluminum Machine Screw, steel Shut-off Valve Ass’y (2 req’d) Shut-off Piston, 416 SST O-Ring, nitrile (2 req’d) Spring Seat, 416 SST Spring, pl steel O-Ring, nitrile (4 req’d) O-Ring, nitrile Spacer, 416 SST Shut-off Plug Ass’y, brass Back-up Ring, PTFE (2 req’d) Back-up Ring, PTFE Bushing, 416 SST Pilot Block, aluminum Machine Screw, steel O-Ring, nitrile (3 req’d) Pilot Nozzle, 416 SST HT Hex Nut, steel Ball, 440C HT Bellows Beam, steel Bellows Bolt, 416 SST HT Bellows Ass’y Bellows Nut, SST Amplifier Nozzle, 416 SST HT Amplifier Base, Aluminum Orifice Fitting Ass’y, SST/alum. O-Ring, nitrile w/ bypass valve ass’y (3 req’d) w/o bypass valve ass’y (2 req’d) Machine screw, steel Bypass Valve Block Bypass Valve Plug O-Ring, nitrile
When ordering replacement parts, also specify the complete eleven-character part number of each part required as found in the following Parts List.
Parts Kits Parts Kit (Includes keys 1B, 8A, 8F [O-ring], 11, 12, 14, 15, 18, 23, 63, 74, 78, 82, 83, 84, 117, 136, 137, 192, 194, & 196B [pump assembly gasket])
R350X000012
Pump Assembly Parts Kit (Includes keys 76, 109, 196, 282, & 283)
13B7149X062
Parts List Key
Description
Part Number
Actuator 1 1B*
2 2B 3 4 4 5 6 7 8 8A* 9 10 11* 12* 13 14* 15*
16 17 18* 19 20 21 22 23* 24
20
Yoke Oil Seal Type 350 72 mm (2-13/16 in.) & 90 mm (3-9/16 in.) yoke boss 127 mm (5 & 5H in.) yoke boss Stem Connector Clevis Pin, SST Cap Screw, pl steel Cap Screw, steel Hex Nut, pl steel Case, aluminum Cylinder, steel Cylinder Base Cylinder Cap Ass’y c/w oil seal Oil Seal Tie Rod, steel Hex Nut, cd pl steel O-Ring, nitrile O-Ring, nitrile (2 req’d) Seal Bushing, brass O-Ring, nitrile O-Ring, nitrile 8900 N (2000 lb) thrust 22200 N (5000 lb) thrust Piston Rod Ass’y, SST/brass Feedback Cam, SST O-Ring, nitrile Casing Plate, aluminum Cap Screw, pl steel Adaptor Plug, steel Machine Screw, pl steel O-Ring, nitrile (3 req’d) Follower Support, pl steel
1H286206992 10A3874X012
1H286206992
1H291706562 1H849806992 1D2620X0012 1K117806992 1D2658X0012
1C7822X0012
1H292106562
75 76 77 78*
*Recommended spare parts
Part Number
See table 2
1V1076X0012 1E218106992
1H292406992
1N659006242
1D6875X0022
1H291906992 1H291906992
1D2375X0022
350 Series
53A7989-E/DOC
Figure 7. Reservoir and Casing Assembly with Bypass Valve (continued on next page)
21
350 Series
PILOT ASSEMBLY DWG NO. DL4135
SECTION A A
APPLY LUBRIPLATE NO. 130AA ON SURFACES MARKED”A” PARTS NOT SHOWN: 22, 28, 30, 35, 43, 106, 107, 116, 120, 134, 138, 147, 148, 149,150, 154A, 156, 282, & 283. KEY 8D IS ROTATED 90 DEGREES FOR CLARITY. 53A7989-E/DOC
Figure 7. Reservoir and Casing Assembly with Bypass Valve (Continued)
Key
Description
79 80 81 82* 83* 84* 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 100A 101 101 102 103 104 105 106 107 108
Bypass Plate Machine Screw, steel Bias & Feedback Springs, SST Casing Gasket Cover Gasket Terminal Box Gasket, composition Terminal Box Cover, pl steel Machine Screw, steel Cover, aluminum Cover Holding Screw, 416 SST Terminal Strip Terminal Strip Marker Strip, fiber Vent Ass’y Motor Hi-Seal Fitting, pl steel Hi-Seal Elbow, pl steel Hi-Seal Fitting, pl steel Travel Indicator Scale, SST Screw Twin Speed Nut, SST Torque Arm Groove Pin, 316 SST, Cap Screw, steel Hex Nut, cd pl steel Terminal Plug Pilot Amplifier Tubing, stainless steel Pilot Supply Tubing, stainless steel Pilot Supply Tubing, stainless steel Adaptor Plug Tubing, stainless steel Adaptor Plug Tubing, stainless steel Bypass Tube, bottom, stainless steel
22
Part Number
See table 2 1H281206992 1H282206992 1H281304012
Key
Description
109 110 111 112 113 114 115 116 117* 118 119 120 121 122 123 124 125 126 127 128 129 131 132 133 134 135 136*
Bypass Tube, top, stainless steel Cylinder Tubing, 304 stainless steel Magnetic Pipe Plug Oil Level Gauge Vent Ass’y Pipe Plug, steel Nameplate, aluminum Drive Screw, SST Filter Element Filter Plug, steel Filter Support, brass Machine Screw, steel Machine Screw, brass Machine Screw, steel Machine Screw, steel Weights, steel Balance Beam, pl steel Machine Screw, steel Spray Shield, steel Pilot Wire Ass’y Lockwasher, steel Lockwasher, steel Terminal Wire Ass’y Terminal Wire Ass’y Cable Clamp, steel Marker Strip Backup Ring (2 req’d) 8900 N (2000 lb) thrust, PTFE 22200 N (5000 lb) thrust, leather Backup Ring, TFE (2 req’d) Lockwasher, steel
137* 138
*Recommended spare parts
Part Number
1H286099012
See table 2
1J505206992 1H749206992 1J489106992
350 Series Key
Description
198 200*
Hex Jam Nut, pl steel Piston Rod Boot, neoprene Type 354 Boot Locknut, pl steel Snap Ring, pl steel Snap Ring, pl steel Travel Stop, brass Clevis Boot, neoprene Type 354 Size 60 Size 80 Snap Ring, pl steel Snap Ring, steel Control Valve Control Valve Strap, aluminum Machine Screw, steel Fitting, pl steel Tubing, stainless steel Machine screw, pl steel Nameplate, SST (for use with rotary valves) Elbow, pl steel
201 202 203 211 212*
213 214 220 221 222 223 224 226 245 248
Part Number
1H937906992
1H872106992 19A9274X012
Note Key numbers 250 through 281 apply to Type 354 actuators only. 250 251 252 254 255 256 257 258 259 DL4130-F/DOC
Figure 8. Type 350 Actuator Yoke and Stem Connector
Key
Description
139 141 145 146 151 152 153 154 155 156 157 158 164 166 167 169 192*
Lockwasher, steel Cap Screw, steel Lockwasher, brass Pipe Plug, steel Groove Pin, steel Lockwasher, steel Indicator Disk, SST Adjusting Screw Ass’y, 416 SST/steel Hex Nut, pl steel Pipe Nipple, zn pl steel Junction Condulet Pointer Washer, steel Machine Screw, steel Adaptor Wiper, SST Washer, steel O-Ring, nitrile (2 req’d) 8900 N (2000 lb) thrust 22200 N (5000 lb) thrust O-Ring, nitrile (4 req’d) (not shown) 22200 N (5000 lb) thrust only Lockwasher, steel Pump Ass’y & Mounting Parts
194* 195 196
*Recommended spare parts
260 261*
Part Number
See table 2
262 263 264 265 266 267 268 269 270 271 272 273 274*
1H291706562 1H742206992 1H292406992
276 277 278 279
Rod End Bearing, steel/PTFE Hex Nut, pl steel Connecting Rod Washer, steel Self-Tapping Screw, pl steel Cap Screw, pl steel Self-Tapping Screw, steel Retaining Ring, pl steel Hub (Material is aluminum for all manufacturing locations except 416 SST for Europe, Middle East, and Africa) Mounting yoke, cast iron Bearing Size 60 25.4 mm (1 inch) valve shaft 31.8 mm (1-1/4 inch) valve shaft 38.1 mm (1-1/2 inch) valve shaft 44.5 mm (1-3/4 inch) valve shaft 50.4 mm (2 inch) valve shaft Size 80 63.5 mm (2-1/2 inch) valve shaft Lever, ductile iron Cap Screw, pl steel Machine Screw (Size 80 only) Access Plate, aluminum Cap Screw, pl steel Vent Screen (Size 80 only) Cap Screw, pl steel Housing, cast iron Positioner Plate, steel Cap Screw, pl steel Washer, pl steel (Size 80 only) Cover, aluminum Bearing Size 60 Size 80 Sealant, 50 cc Loctite 242 Lubricant, Dow Corning 33 Cap Screw, pl steel Set Screw, steel (Size 80 only)
12A9775X012 12A9558X012 12A9559X012 12A3848X012 12A9715X012 12A9598X012
12A9374X012 14A7815X012
23
350 Series
PARTS NOT SHOWN: 267 APPLY LUB/SEALANT 59A5500-D/DOC
Figure 9. Type 354 Actuator Yoke and Housing parts Key
Description
Part Number
2-13/16 Inch (72 mm) Yoke Boss Bolt-On Handwheel
PARTS NOT SHOWN: 95 & 248
BOTTOM VIEW
BL4137-B/DOC
Figure 10. Optional Bypass Valve Assembly
Key
Description
280 282 283 284 285 286 ––– ––– –––
Locknut, steel (Size 80 only) Elbow, brass Pipe Nipple, brass Washer, pl steel Disk, stainless steel Wire Retainer Instruction Tag, Reservoir Pressure (not shown) Instruction Tag, Input Signal (not shown) Instruction Tag (not shown)
24
Part Number
51 54 55 56 132 136 142 145 146 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 166 167 168 169 170 241
Handwheel, cast iron Hex Jam Nut, pl steel Ball, alloy steel Spring, bronze Operating Nut, steel Bearing Retainer, brass Handwheel Body Cast iron/bronze Handwheel Screw, brass/416 SST Lever & Pin Ass’y, steel/bronze Washer, pl steel Lockwasher, steel Bushing, steel Ball Bearing, steel Lever Pivot Pin 416 SST E-Ring, steel Lever Spacer, steel Cap Screw, steel Lockwasher, SST Hex Nut, pl steel Pointer Mounting Bolt, 416 SST Pointer, 302 SST Machine Screw, steel Indicator Plate Aluminum Cap Screw, steel U-Bolt, steel Guide Bolt, 416 SST Set Screw Grease Fitting Hex Nut, steel Lubricant Lubriplate Mag 1
350 Series
DH4709-G/DOC
Figure 11. Amplifier Assembly with Optional Lock Valves (Lock Valves—Keys 59A through 60)
25
350 Series VALVE B RESTRICT STROKING TIME TO EXTEND PISTON ROD
A
VALVE B
A
RESTRICT STROKING TIME TO RETRACT PISTON ROD
B
SECTION A-A SECTION A-A
30A6482-B/DOC
WITHOUT LOCK VALVES
WITH LOCK VALVES
Figure 12. Optional Speed Control Valve
1 NOTE: 1 LEVER PIN (KEY 153) REPLACED BY ENGAGING PIN ON DECLUTCHABLE HANDWHEELS APPLY LUB/SEALANT 40A8779-D/DOC
Figure 13. Typical Bolt-On Handwheel (Non-Declutchable Type is Shown)
26
350 Series
50A6748-F/DOC
Figure 14. 127 mm (5-Inch) Yoke Boss Size Type 350 Actuator with Integral Handwheel
27
350 Series Key
Description
3-9/16 Inch (90 mm) Yoke Boss Bolt-On Handwheel 51 54 55 56 132 136 142 143 144 145 146 148 149 150 152 153 154 154 155 156 158 159 160 161 162 163 166 167 168 169 170 172 173 177 178 241
Handwheel, cast iron Hex Jam Nut, pl steel Ball, alloy steel Spring, bronze Operating Nut, steel Bearing Retainer, steel Handwheel Body, cast iron/bronze U-Bolt, steel Hex Nut, pl steel Handwheel Screw, bronze Lever & Pin Ass’y, steel/bronze Dowel Pin, steel Washer, pl steel Lockwasher, steel Ball Bearing, steel Lever Pin, 416 SST Retaining Ring, steel Cotter Pin, steel Spacer, steel Cap Screw, steel Hex Nut, pl steel Pointer Mtg Bolt, 416 SST Pointer, 302 SST Machine Screw, steel Indicator, aluminum Cap Screw, steel U-Bolt, steel Guide Bolt, 416 SST Set Screw, steel Grease Fitting Non-declutchable Hex Nut, pl steel Chain, SST Drive Screw, steel Spring Cap, steel Machine Screw, steel Lubricant, Lubriplate Mag 1
5-Inch (127 mm) Yoke Boss Integral Handwheel 159 170 171 172 173 174 175
Locking Pin, 416 SST HT Sleeve Ass’y, 416 SST Set Screw, alloy steel Gear Case, cast iron Thrust Bearing Worm Gear, bronze Retainer, steel
Part Number
Key
Description
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 193 197 199 226
Cap Screw, pl steel Key, steel Travel Stop Nut, steel Front Worm Retainer Steel Back Worm Retainer Steel Worm Shaft, steel Handwheel cast iron Handgrip, steel Handgrip Bolt, steel Handwheel Cap, Cast iron Set Screw, steel Grease Fitting Ball, alloy steel Spring, bronze Ball Bearing Hex Nut, pl steel Adaptor, cast iron Pointer, SST Cap Screw, steel Machine Screw, steel
Part Number
3-9/16 Inch (90 mm) Yoke Boss Integral Handwheel 171 174 177 179 180 181 182 183 184 185 186 187 188 189 190 197 226 227 228 229 230 231 232 233 234 235 236 237 240
Set Screw, steel Worm Gear, bronze Key, steel Front Worm Retainer, steel Back Worm Retainer, steel Worm Shaft, steel Handwheel, cast iron Hand Grip, steel Hand Grip Bolt, steel Handwheel Cap Set Screw, steel Grease Fitting Ball, alloy steel Spring, bronze Ball Bearing, steel Handwheel Indicator SST Machine Screw, pl steel Actuator Stem 316 SST Upper Sleeve, steel Needle Bearing, steel Needle Bearing Race, steel Bearing Retainer Flange, Cast iron Needle Bearing, steel Needle Bearing Race, steel Lower Sleeve, steel Cover Band Ass’y, steel Cap Screw, pl steel Washer, brass Plate, steel
Fisher and Fisher-Rosemount are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc. All other marks are the property of their respective owners. EFisher Controls International, Inc. 1976, 2001; All Rights Reserved
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