Y690 Series
Fisher Controls
Instruction Manual
Y690 Series Pressure Reducing Regulators
October 1993
Form 5337
Introduction
downstream side of the regulator unless full capacity relief is required.
Scope of Manual
The pressure reducing regulators (figure 1) may be applied in a variety of commercial and industrial applications. Available type numbers are described as follows:
This manual provides instructions for installation, startup, maintenance, and parts information for the Y690 Series pressure regulators. Instructions and parts lists for other equipment used with these regulators are found in separate manuals.
Type Y690—Very low-pressure, 1 to 7 inches wc (2 to 16 mbar), direct-operated regulator with internal registration requiring no downstream control line. Type Y690H—Higher-pressure, 5 inches wc to 7 psig (12 to 480 mbar), direct-operated regulator with internal registration requiring no downstream control line.
Product Description The Y690 Series regulator design (figure 1) is ideally suited to control gas supply to in-plant processing equipment. The rugged casings and sliding pusher post design withstands the full 150 psig (10.3 bar) inlet pressure at both the inlet and outlet connections. Because the regulators can withstand the full inlet pressure, a downstream relief valve is not required to protect the
Type Y690M—Direct-operated regulator with the same pressure rating as the Type Y690H. The Type Y690H has a blocked throat and O-ring stem seal to prevent leakage around the stem. Lower diaphragm casing assembly is tapped for 1/2-inch NPT for control line connection.
W6175-1
TYPE Y690
TYPE Y690H
Figure 1. Y690 Series Pressure Reducing Regulators
©Fisher Controls International, Inc. 1993; All Rights Reserved
D101990X012
W6174-1
Y690 Series
Table 1. Specifications
Body Sizes and End Connection Styles(1) NPT screwed:n 3/4 x 3/4, n 1 x 1, n 1-1/4 x 1-1/4 inch CI 150 & 300 RF Flanges:n 3/4 x 3/4, n 1 x 1 inch Maximum Allowable Inlet Pressure(2) 150 psig (10.4 bar) Maximum Outlet Pressure (Casing)(2) 150 psig (1.0 bar) (2)
Outlet Pressure Ranges See table 2
1. Flanged end connections and end connections for other than U.S. standard can usually be provided; consult the Fisher sales office or sales representative.
Specifications Table 1 gives some general regulator ratings and other specifications. Individual regulator data is stamped on the nameplate as it comes from the factory.
Maximum Emergency Outlet Pressure to Avoid Internal Part Damage (emergency only)(2) 150 Psig (10.3 bar) Material Temperature Capabilities(2) Standard Elastomers: –20 to 150°F (–29 to 66°C) High-Temperature Elastomers: +40 to 300°F (+5 to 149°C) Spring Case Connection 1/4 inch NPT Diaphragm Case Connection 1/2 inch NPT (Type Y690M only) Approximate Weights 17 lbs (7.7 kg) 2. The pressure/temperature limits in this manual, and any applicable standard limitation, should not be exceeded.
external sources. A regulator should be inspected for damage periodically and after any overpressure condition beyond the emergency outlet pressure limit specified in table 1. Key numbers referenced in this section are shown in figures 3 through 5.
Installation Note
WARNING Personal injury, property damage, equipment damage, or leakage due to escaping gas or bursting of pressure-containing parts may result if this regulator is overpressured or is installed where service conditions could exceed the limits given in table 1, or where conditions exceed any ratings of the adjacent piping or piping connections. To avoid such injury or damage, provide pressure-relieving or pressure-limiting devices (as required by the appropriate code, regulation, or standard) to prevent service conditions from exceeding those limits. Additionally, physical damage to the regulator could cause personal injury or property damage due to escaping gas. To avoid such injury or damage, install the regulator in a safe and well ventilated location. Regulator operation within ratings does not preclude the possibility of damage from debris in the lines or from
2
If the regulator is shipped mounted on another unit, install that unit according to the appropriate instruction manual. 1. Only personnel qualified through training and experience should install, operate, and maintain a regulator. For a regulator that is shipped separately, make sure that there is no damage to, or foreign material in, the regulator. Also ensure that all tubing and piping have been blown free. 2. The regulator may be installed in any position as long as the flow through the body is in the direction indicated by the arrow cast on the body. Nor mal installation is with the spring case barrel vertical above or below the diaphragm case. However, when using a Type Y690 regulator, for proper operation to achieve the published capacities, the spring case barrel should be installed pointed down as shown in figure 1. For complete actuator casing drainage of the Types Y690H & Y690M, the regulators should be installed as shown in figure 2. If continuous operation of the system is required during inspection or maintenance, install a three-valve bypass around the regulator.
Y690 Series
VENT POINTED DOWN
HORIZONTAL PIPELINE
HORIZONTAL PIPELINE
5. The Type Y690M regulator requires a downstream control line. Be sure to install this control line before putting the regulator into operation. The downstream control line pipe should be at least 1/2-inch in diameter and connected to a straight section of outlet piping 5 to 10 pipe diameters downstream of the regulator. A hand valve should be installed in a straight section of the control line. This hand valve can be throttled down to dampen out pulsations which may cause instability or cycling of the regulator.
TYPE Y690H
Startup and Adjustment WARNING VENT POINTED DOWN
DOWNSTREAM CONTROL LINE
TYPE Y690M INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE DOWNSTREAM CONTROL PRESSURE W6187
Figure 2. Self Draining Installation Schematics
WARNING A regulator may vent some gas to the atmosphere. In hazardous or flammable gas service, vented gas may accumulate and cause personal injury, death, or property damage due to fire or explosion. Vent a regulator in hazardous gas service to a remote, safe location away from air intakes or any hazardous area. The vent line or stack opening must be protected against condensation or clogging. 3. To keep the spring case vent from being plugged or the spring case from collecting moisture, corrosive chemicals, or other foreign material, point the vent down or otherwise protect it. The diaphragm case assembly (key 20) may be rotated in order to obtain desired positioning. 4. To remotely vent the regulator, remove the vent (key 65) and install obstruction-free tubing or piping into the 1/4-inch NPT vent tapping. Provide protection on a remote vent by installing a screened vent cap into the remote end of the vent pipe.
To avoid personal injury, property damage, or equipment damage caused by bursting of pressure containing parts or explosion of accumulated gas, never adjust the control spring to produce an outlet pressure higher than the upper limit of the outlet pressure range for that particular spring. If the desired outlet pressure is not within the range of the control spring, install a spring of the proper range according to the diaphragm and spring case area section of the maintenance procedure. Y690 Series regulators can be placed in operation by slowly introducing inlet pressure. The regulator takes control when downstream pressure is established. The regulator has been adjusted at the factory to provide approximately the reduced pressure requested on the order. With a spring-loaded regulator, the pressure setting may be adjusted to a value within the spring range shown in table 2. To adjust the pressure setting, perform the following steps (key numbers are referenced in figures 3 through 5): 1. Remove the closing cap (key 3). 2. Use a 1-inch (25.4 mm) hex rod to turn the adjusting screw (key 2) either clockwise to increase outlet pressure or counterclockwise to decrease outlet pressure.
Shutdown First close the nearest upstream shutoff valve and then close the nearest downstream shutoff valve to vent the regulator properly. Next, open the vent valve between the regulator and the downstream shutoff valve nearest to it. All pressure between these shutoff valves is released through the open vent valve, since a Y690 Series regulator remains open in response to the decreasing downstream pressure.
3
Y690 Series Table 2. Outlet (Control) Pressure Ranges Control Spring Color
Type Number Y690
Y690H & Y690M
Outlet Pressure Range
Orange
1B558527052
1-2.5 inches wc (2-6 mbar)(1)
Red
1B653827052
2.5-7 inches wc (6-16 mbar)(1)
Red
1B653827052
5-10 inches wc (12-25 mbar)(2)
Olive Drab
1B653927022
7-15 inches wc (17-37 mbar)(2)
Yellow
1B537027052
0.5-1.2 psig (34-83 mbar)(2)
Lt. Green
1B537127022
1.2-2.5 psig (83-172 mbar)(2)
Lt. Blue
1B537227022
2.5-4.5 psig (.17-.31 bar)(2)
Black
1B537327052
4.5-7 psig (.31-.48 bar)(2)
1. To achieve the published outlet pressure rating the spring case barrel must be installed below the diaphragm as shown in figure 1. 2. With spring case barrel above the diaphragm. With the spring case barrel below the
Maintenance Regulator parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection and replacement of parts depends upon the severity of service conditions or the requirements of local, state, and federal regulations. Due to the care Fisher takes in meeting all manufacturing requirements (heat treating, dimensional tolerances, etc.), use only replacement parts manufactured or furnished by Fisher.
WARNING To avoid personal injury, property damage, or equipment damage caused by sudden release of pressure or explosion of accumulated gas, do not attempt any maintenance or disassembly without first isolating the regulator from system pressure and relieving all internal pressure from the regulator. Key numbers are referenced in figures 3 through 5.
Body Area This procedure is for gaining access to the disk assembly, orifice, body gasket, split ring, and pitot tube if used. All pressure must be released from the diaphragm case assembly, and the disk assembly must be open, before these steps can be performed. 1. Unscrew the union nut (key 19) from the body (key 28) and remove the diaphragm case assembly (key 20) and split ring (key 17). With a Type Y690 or Y690H (figures 3, 4 & 5) regulator, the diaphragm case assembly (key 20) must be tipped toward the body outlet to allow removal clearance for the pitot tube (key 76). 2. Inspect and replace the orifice (key 27) if necessary. Protect the orifice seating surface during disassembly
4
Control Spring Part Number
diaphragm, the spring range is 2-inches wc (4 mbar) lower and with the spring barrel horizontal, the range is 1-inch wc (2.5 mbar) lower.
and assembly. Lubricate the threads of the replacement orifice with a good grade of pipe thread sealant and install with 29 to 37 foot-pounds (39 to 50 N•m) of torque. 3. Remove the cotter pin (key 14) if it is necessary to replace the disk assembly (key 25). 4. To replace or reposition the pitot tube (key 76, figures 3, 4 or 5), remove the pitot tube screws (key 77), install the pitot tube so that it points into the outlet of the body (key 28) after the diaphragm case assembly (key 20) is installed, and secure with the pitot tube screws (key 77). 5. Install the disk assembly (key 25) and secure it with the cotter pin (key 14). 6. If necessary, install the replacement body gasket (key 16) into the body (key 28). 7. Slide the union nut (key 19) as far as it will go onto the diaphragm case assembly (key 20). Install both halves of the split ring (key 17) into the slots of the diaphragm case assembly (key 20) and secure them by sliding the union nut down on the split ring. 8. Install the diaphragm case assembly (key 20) with the attached split ring (key 17) and union nut (key 19) so that the pitot tube (key 76, if used) fits into the outlet of the body (key 28). 9. Tighten the union nut (key 19) until the diaphragm case assembly (key 20) is secure on the body (key 28).
Diaphragm and Spring Case Area This procedure is for gaining access to the spring, diaphragm, and lever assembly stem. All pressure must be released from the diaphragm case assembly before these steps can be performed.
Y690 Series
To Change the Control Spring:
Note Any remote control drive unit used with a Y690 Series regulator must be removed from the spring case (key 23) before these steps can be performed. 1. Remove the closing cap (key 3), and turn the adjusting screw (key 2) counterclockwise until all compression is removed from the control spring (key 1). 2. Change the control spring to match the desired spring range. 3. Replace the adjusting screw (key 2). 4. Install a replacement closing cap gasket (key 37), if necessary, and reinstall the closing cap (key 3). 5. If the spring range was changed, be sure to change the stamped spring range on the nameplate. To Disassemble and Reassemble Diaphragm Parts: Key numbers are referenced in figures 3 through 5. 1. Remove the closing cap (key 3), and turn the adjusting screw (key 2) counterclockwise to remove the adjusting screw (key 2) and the control spring (key 1). 2. Remove the spring case hex nuts (key 22), cap screws (key 21), and spring case (key 23). 3. Remove the diaphragm (key 5) plus attached parts by tilting them so that the pusher post (key 8, figures 3, 4 and 5) slips off the lever assembly (key 9). To separate the diaphragm or diaphragm assembly (key 5) from the attached parts, unscrew the spring holder screw (key 36) from the pusher post (key 8, figures 3, 4 and 5). 4. Inspect the pusher post and the O-ring (key 10), replace if required.
8. Install the lever assembly (key 9) into the stem (key 13) and secure the lever assembly (key 9) with the machine screws (key 11). 9. Install the parts on the pusher post in the order listed below: • Pusher post connection (key 33) • Diaphragm plate, Type Y690 only (key 24) • Diaphragm (key 5) pattern side up • Diaphragm plate (key 24) • Belleville washer, Types Y690H & Y690M only (key 86) • Control spring seat (key 4) • Hex nut (key 34) — Torque the hex nut 9 to 11 foot-pounds (12 to 15 N•m) to secure par ts to the pusher post connector (key 33) • Relief valve spring (key 32) 10. Insert and tighten the spring holder screw (key 36) with a torque of 1 to 3 foot-pounds (1 to 4 N•m) to secure the diaphragm parts to the pusher post (key 8). 11. Install the assembled parts in the lower casing (key 20). Make sure that the lever (key 9) fits in the pusher post (key 8) and that the holes in the diaphragm align with the holes in the lower casing. 12. Install the spring case (key 23) on the lower casing assembly (key 20) so that the vent assembly (key 65) is correctly oriented, and secure with the cap screws (key 21) and hex nuts (key 22, not shown) fingertight only. 13. Insert the control spring (key 1) into the spring case (key 23), followed by the adjusting screw (key 2). 14. Turn the adjusting screw (key 2) clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm (key 5). Using a crisscross pattern, finish tightening the cap screws (key 21) and hex nuts (key 22, not shown) to 18 to 21 footpounds (24 to 28 N•m) of torque. To adjust the outlet pressure to the desired setting, refer to the Startup and Adjustment section. 15. Install a replacement closing cap gasket (key 37) if necessary, and then install the closing cap (key 3).
5. Remove hex nut (key 34) to separate the diaphragm and attached parts. 6. To replace the lever assembly (key 9), remove the machine screws (key 11). To replace the stem (key 13) also perform body area maintenance procedure steps 1 and 3, and pull the stem (key 13) out of the lower casing assembly (key 20). 7. Install the stem (key 13) into the lower casing assembly (key 20) and perform body area maintenance procedure steps 5 through 9 as necessary.
Parts Ordering When corresponding with the Fisher sales office or sales representative about this regulator, include the type number and all other pertinent information stamped on the nameplate. Specify the eleven-character part number when ordering new parts from the following parts list.
5
Y690 Series
Key
Parts List Note In this parts list, parts marked NACE are intended for corrosion-resistant service as detailed in the National Association of Corrosion Engineers (NACE) standard MR0175.
Key
Description Parts Kit for Y690 Series (included are keys 5, 10, 14, 15, 16, 25, and 37)
1 2 3
4 5*
8
9
Control Spring, pl steel Adjusting Screw, pl steel Stainless steel (when used w/Type 661) Closing Cap For ductile iron spring case assembly Plastic for spring-loaded regulator Steel for pressure-loaded regulator For stainless steel spring case assembly, stainless steel Control Spring Seat, pl steel Diaphragm Nitrile Fluoroelastomer Pusher Post For Types Y690H and Y690M Stainless steel, standard NACE, stainless steel For Type Y690, stainless steel NACE, stainless steel Lever Assembly Stainless steel, standard Brass For NACE, stainless steel
10* Pusher Post O-Ring Nitrile Fluoroelastomer EPR 11 Machine Screw (2 req’d) Stainless steel (also NACE) Brass 13 Stem For Types Y690 or Y690H Stainless steel Stainless steel (NACE) For Type Y690M only Stainless steel Stainless steel (NACE)
Part Number
RY690X00012 See table 2 1B537944012 14A7998X012
T11069X0012 1E422724092 1E422735072 13B0104X012
23B0101X012 23B0101X022
13B0105X012 13B0105X022 13B0108X012 13B0108X022 1B5375000B2 1B5375X0082 1B5375X0032
1D687506992 1N430406382 1D6875X0032 1A866435042 1A331928982
1A832735172 1A8327X00A2
Description
14* Cotter Pin, stainless steel (also NACE) 15* O-Ring, (Type Y690M only), Stainless steel disk holder Nitrile disk (also NACE) Fluoroelastomer disk (also NACE) EPR disk (also NACE) PTFE disk Aluminum disk holder Nitrile disk Fluoroelastomer disk EPR disk 16* Body Gasket, composition 17 19
20
21 22 23
24
Split Ring, plated steel Union Nut For steel or stainless steel diaphragm case assy, stainless steel For steel diaphragm case assy, stainless steel For ductile iron diaphragm case assy, malleable iron Lower Casing Assembly Ductile iron Stainless steel Diaphragm Case Cap Screw, (not shown) plated steel (8 req’d) Hex Nut (not shown), plated steel (8 req’d) Spring Case Assembly Ductile iron Stainless steel Diaphragm Plate pl steel, (2 req’d for Type Y690)
25* Disk Assembly Stainless steel disk holder with Nitrile disk (for Type Y690H only) Nitrile disk (for Type Y690M only) Fluoroelastomer disk PTFE disk EPR disk Aluminum disk holder with Nitrile disk (for Type Y690H only) Nitrile disk (for Type Y690M only) Fluoroelastomer disk For NACE, Stainless steel disk holder with Nitrile disk Fluoroelastomer disk EPR disk
1E375535172 1E3755X0022
*Recommended spare part.
6
Part Number 1A866537022
1D289906992 1D2899X0022 1H2926X0012 1D2899X0022 1D289906992 1D2899X0022 1H2926X0012 1A832504032 1A832648722
1N687835072 1N6878X0032 1E471119062 33B0110X042 33B0110X032 1B116224052 1A309324122 13B0109X042 13B0109X032 13B0102X012
1C4248X0202 1C4248X0252 1C4248X0052 1C4248000D2 1C4248X0302 1C4248X0212 1C4248X0252 1C4248X0182 1C4248X0252 1C4248X0192 1C4248X0152
Y690 Series
o APPLY LUB PARTS NOT SHOWN: 22 43B0115-C
Figure 3. Type Y690 Regulator
7
Y690 Series
VIEW A
o APPLY LUB PARTS NOT SHOWN: 22 43B0117-C
Figure 4. Type Y690H Regulator
8
Y690 Series
Key 27
28
Description Orifice Stainless Steel 3/32-inch (2.4 mm) 1/8-inch (3.2 mm) 3/16-inch (4.8 mm) 1/4-inch (6.4 mm) 5/16-inch (7.9 mm) 3/8-inch (9.5 mm) 7/16-inch (11.1 mm) 1/2-inch (12.7 mm) 9/16-inch (14.3 mm) Aluminum 3/32-inch (2.4 mm) 1/8-inch (3.2 mm) 3/16-inch (4.8 mm) 1/4-inch (6.4 mm) 5/16-inch (7.9 mm) 3/8-inch (9.5 mm) 7/16-inch (11.1 mm) 1/2-inch (12.7 mm) 9/16-inch 14.3 mm) Stainless steel (NACE) 3/32-inch (2.4 mm) 1/8-inch (3.2 mm) 3/16-inch (4.8 mm) 1/4-inch (6.4 mm) 5/16-inch (7.9 mm) 3/8-inch (9.5 mm) 7/16-inch (11.1 mm) 1/2-inch (12.7 mm) 9/16-inch 14.3 mm) Body Ductile iron 3/4 x 3/4-inch size 1 x 1-inch size Steel NPT 3/4 x 3/4-inch size 1 x 1-inch size Class 150 Raised Face Flanged 3/4 x 3/4-inch size 1 x 1-inch size Class 300 Raised Face Flanged 3/4 x 3/4-inch size 1 x 1-inch size DIN 16/25/40 3/4 x 3/4-inch size 1 x 1-inch size
Part Number
Key 28
0R044135032 1A936735032 00991235032 0B042035032 0B042135032 0B042235032 1A834635032 1A928835032 1C425235032 0R044109022 1A936709012 00991209012 0B042009012 0B042109012 0B042209012 1A8346X0012 1A928809012 1C4252X0012 0R0441X0012 1A9367X0022 009912X0012 0B0420X0012 0B0421X0012 0B0422X0012 1A8346X0022 1A9288X0012 1C4252X0022
32 33
34 36 37 65
76
77 1E4501X0012 1E4503X0012
1E162722012 1J691122012 22B4317X022 14B3116X012
80 86
Description Body (Cont'd.) Stainless steel 3/4 x 3/4-inch size 1 x 1-inch size 1-1/4 x 1-1/4-inch size Class 150 Raised Face Flanged 3/4 x 3/4-inch size 1 x 1-inch size Class 300 Raised Face Flanged 3/4 x 3/4-inch size 1 x 1-inch size DIN 16/25/40 3/4 x 3/4-inch size 1 x 1-inch size Overpressure spring, steel Pusher Post Connector Stainless steel Stainless steel (NACE) Hex Nut (for Types Y690, Y690H or Y690M) Spring Holder Screw, pl steel Closing Cap Gasket, composition Vent Assembly, plastic Type Y602-1 Type Y602-11 (for Types Y690H or Y690M) Type Y602-12 (for Types Y690H or Y690M) Pitot Tube (for Types Y690 or Y690H only) For stainless steel disk assy, Stainless steel For aluminum disk assy, pl steel Type Y690 Type Y690H Pitot Tube Screw (for Types Y690 or Y690H only) (4 req’d) For stainless steel disk assy, Stainless steel For aluminum disk assy, plated steel Type Y690 Type Y690H Lubricant, Dow Corning 33, 10 oz. tube Belleville Washer (for Types Y690H or Y690M only)
Part Number
1E162733092 1J691133092 1J691233092 22B4317X012 14B3116X022 14B3116X042 23A2389X032 24B0635X022 24B0028X022 1B541327022 23B0106X012 23B0106X022 1A354024122 1C323114012 1P753306992 17A6570X012 17A5515X012 27A5516X012
1D2916000A2 1D2916000A2 2D837144012
1D968438992 1D968438992 1D884324052 T13078T0012 13B6920X012
14B3116X032 23A2389X012 2AB0635X012 24B0028X012
9
Y690 Series
VIEW A
o APPLY LUB PARTS NOT SHOWN: 22 43B0659-C
Figure 5. Type Y690M Regulator
While this information is presented in good faith and believed to be accurate, Fisher Constrols does not guarantee satisfactory results from reliance upon such information. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding the performance, merchantability, fitness
Fisher Controls
or any other matter with respect to the products, nor as a recommendation to use any product or process in conflict with any patent. Fisher Controls reserves the right, without notice, to alter or improve the designs or specifications of the products described herein. For Information, contact Fisher Controls: Marshalltown, Iowa 50158 USA Cernay 68700 France
Sao Paulo 05424 Brazil Singapore 0512