414-6305 Instruction Manual

Type 414-6305

Fisher Controls

Instruction Manual

Type 414-6305 Pilot-Operated Pressure Relief Valve*

September 1980

Form 5066

INTRODUCTION Scope of Manual This instruction manual contains installation, adjustment, maintenance, and parts ordering information for the Type 414 valve when operated by a Type 6305 or 6305B pilot (see figure 1).

Description The Type 414-6305 pilot-operated pressure relief valve may be used for both liquid and gas service and is suitable where pressures on the valve outlet will be essentially atmospheric. The Type 6305B pilot is used in applications where the pilot exhaust is vented into a main line valve outlet with back pressure greater than atmospheric.

W2533

Figure 1. Type 414-6305 Pilot-Operated Pressure Relief Valve

In relief applications, the Type 414-6305 valve is used to provide protection from overpressuring a downstream system. In back pressure applications, the Type 414-6305B valve can be used to maintain a given upstream pressure.

Specifications Specifications for a given unit as it originally comes from the factory are stamped on a nameplate (see figure 2) located on the pilot spring case. Specifications for various constructions are given in table 1. *Pilot-operated pressure relief valve defined in ANSI Standard B95.1-1972. ŠFisher Controls Company 1977, 1978, 1980; All Rights Reserved

13A5623-A

Figure 2. Typical Nameplate

Type 414-6305 Table 1. Specifications

AVAILABLE MAIN VALVE CONSTRUCTIONS

Standard Body and Seat Ring Sizes: 1, 2, 3, 4, or 6 in. (with or without drain plug) Body Ratings and End Connections1 Stamdard Raised-Face Flanges: Class 150 (except in 6 in. body), Class 300, or Class 600 Optional: Class 125 flat-faced, Class 250 raised-face, screwed, butt weld, socket weld, or Class 150, 300, or 600 ring-type joint.

AVAILABLE PILOT CONSTRUCTIONS

6305: For applications where pilot exhaust is vented to atmospheric pressure 6305B: For applications where pilot is vented into main valve outlet with back pressure greater than atmospheric

MINIMUM PRESSURE DROP REQUIRED TO STROKE MAIN VALVE5

BODY SIZE, IN. 1 2 3 4 6

MAIN VALVE FLOW Up—flow tends to open DIRECTION AND FLOW Quick-opening6 CHARACTERISTIC MAIN VALVE SHUTOFF CLASSIFICATION

ANSI Class V—leakage less than one bubble per minute (using air at service or 300 psi (20.7 bar) pressure drop, whichever is lower)

MATERIAL TEMPERATURE CAPABILITIES

Nitrile O-Rings and Urethane Wiper Ring: –20° to 200°F (–29 to 93°C) Viton O-Rings and Urethane Wiper Ring: 0° to 200°F (–18° to 93°C) Viton O-Rings and TFE Wiper Ring: 0° to 350°F (–18° to 177°C)

APPROXIMATE WEIGHTS

1 In. Body: 2 In. Body: 3 In. Body: 4 In. Body: 6 In. Body:

MINIMUM PRESSURE 100 psi (6.9 bar) DROP REQUIRED FOR SHUTOFF

OPTIONAL SEAT RING PULLER

1 In. Through 4 In. Main Valves Size: 30 puller 6 In. Main Valve: Size 40 puller

1. Make sure that service conditions will not exceed ANSI limits nor any pressure/temperature limits given in this bulletin.

2. Term defined in ASNI standard B95.1-1972.

3. Trademark of DuPont Co. 4. For optimum performance, select the spring of the lowest range that includes the desired set pressure.

5. Independent of pressure drop required for shutoff.

6. Quick opening characteristic should not be used for continuous flowing liquid service below 10 percent of wide open Cv. Special trims are available for such applications; consult you Fisher representative.

MAXIMUM ALLOWABLE 1440 psi (99.3 bar) or body rating PRESSURE/PRESSURE limit, whichever is lower DROP1 (RELIEVING PRESSURE2) SET PRESSURE2 CAPABILITIES PILOT CONTROL SPRING4

SET PRESSURE RANGE Psig 100-250 250-400 400-1200

bar 6.9-17.2 17.2-27.6 27.6-82.7

Color Code Red Blue Zinc

Part Number 1K7485 27202 1L3461 27142 13A5543 X012

INSTALLATION WARNING Personal injury or property damage may result from bursting of pressure retaining parts or explosion of accumulated gas if the pilot breaks

2

MINIMUM DROP REGARDLESS OF BUILDUP 80% of Main Valve 90% of Main Valve Flow Capacity Flow Capacity Psi Bar Psi Bar 55 3.8 65 4.5 55 3.8 95 6.6 25 1.7 50 3.4 15 1.0 40 2.8 15 1.0 20 1.4

42 lb (14.4 kg) 75 lb (29.3 kg) 150 lb (63.0 kg) 220 lb (94.5 kg) 495 lb (218 kg)

off the main valve, the relief valve develops a leak, or the relief valve installation is in violation of local, state, or federal codes and regulations.

Install the relief valve in a safe location and check to make sure that the installation is in compliance with all applicable codes and regulations.

Also check to make sure that none of the relief valve limitations in this instruction manual have been exceeded.

Type 414-6305 NONRESTRICTIVE VENT(S) AND PIPING

3-VALVE BYPASS LINE

1/2" NPT CONTROL LINE CONNECTION FILTER AS REQUIRED

PIPE TEE WITH 1/4" NPT EXHAUST CONNECTION TYPE 6305 PILOT

1/2" NPT CONTROL LINE CONNECTION TEST PRESSURE GAUGE TEST PRESSURE LINE

TYPE 6305B PILOT

TYPE 414 MAIN VALVE

CONTROL LINE

CONTROL LINE

PIPE TEE WITH 1/4" NPT EXHAUST CONNECTION

MAIN BLOCK VALVE TYPE 414 MAIN VALVE 34A5982-B A1904-1

FILTER AS REQUIRED MAIN BLOCK VALVE

Figure 4. Typical Back Pressure or Bypass Installation

MAIN LINE PRESSURE 44A5983-A A1905-1

Figure 3. Typical Pressure Relief Installation Use qualified personnel when installing, operating and maintaining this relief valve.

The standard tubing and fitting mounting position for the pilot-operated relief valve is on the right side when looking downstream, but pilot and main valve may be fieldchanged (according to the “Changing Pilot Mounting� section) so that tubing and fittings are on the left side.

1. Before installing the valve, inspect the main valve and pilot for any damage and for the presence of any foreign material.

2. Make certain that pipelines are free of foreign material, and that the valve is installed so that pipeline flow is in the same direction as the arrow on the side of the main valve body. On back pressure control applications, install a three-valve isolating bypass if operation is necessary during maintenance (see figure 4).

3. Connect a control line to the 1/2-inch NPT connection in the pilot (figure 3 or 4). The control line should be pipe of at least 1/2-inch diameter connected to a straight run of inlet piping five to ten pipe diameters upstream from the main valve in a swaged installation, three to five feet upstream in an unswaged installation, or from wherever else the pressure is to be controlled. If dirt is expected to plug the pilot restriction or prevent the pilot ball from shutting off, install an appropriate filter in this control line, or use a common filter or strainer in the main or vent line upstream from the control line.

4. Install a common 1/4-inch exhaust line into the 1/4inch NPT pipe tee. This exhaust line may be vented either directly into the main valve outlet (main valve stack with atmospheric relief) or separately to atmosphere. In either

case, a vent line or stack should be of as large a diameter of pipe as practical with a minimum number of bends or other restrictions. Avoid piping the exhaust into a vent stack if a significant back pressure will build up in the stack under flowing conditions. This can hinder main valve opening because any pressure in the pilot spring case will add to set pressure buildup required to stroke the main valve.

WARNING To avoid personal injury or equipment damage due to fire or explosion, or to contact with a hazardous fluid or gas, the vent or stack should be located to avoid venting fluid or gas near buildings, air intakes, or any hazardous location. The line or stack opening must be protected against anything that might clog it.

CHANGING PILOT MOUNTING Perform this procedure if tubing and fittings will be changed from one side to another. Key numbers refer to figures 6 and 7 for the pilot and figure 9 for the main valve unless otherwise indicated.

1. Disconnect the tubing (key 26, figure 8) and control line from the pilot, and remove the pilot from the pipe nipple (key 24, figure 8).

2. Remove the pilot pipe plug (key 21) with a 5/16-inch hex (Allen) wrench. With the same wrench, rotate the adjusting screw (key 6) counterclockwise until all tension is removed from the pilot control spring (key 11).

3. Back out the pilot cap screws (key 20) far enough to free the spring case (key 1). Rotate the spring case so that the 1/4-inch NPT exhaust connection is opposite the side it was on previously, and then secure by turning

3

Type 414-6305 the cap screws back in all the way. Rotate the adjusting screw clockwise to restore the pilot control spring setting, and replace the pipe plug.

4. Remove the hex nuts (key 14) from the main valve flange (key 3), and remove the flange and main valve spring (key 20). Disconnect any pilot exhaust line from the pipe tee (key 28).

5. Pull the cylinder (key 2) and attached piston/plug assembly out far enough so that the pipe tee and pipe nipple (key 29) clear the studs (key 18). Rotate the cylinder so that the tee and nipple are opposite the side they were on previously, and then install the cylinder back on the main valve body (key 1).

6. Install the main valve spring, flange, and hex nuts, using a crisscross tightening pattern on the hex nuts until the flange is uniformly snugged down on the studs.

Connect any pilot exhaust line to the pipe tee.

7. Install the pilot back on the pipe nipple (key 24) so that the 1/4-inch NPT pilot exhaust connection is on the same side as the cylinder pipe tee. Connect the tubing (key 26) to the exhaust connection, and the control line to the 1/2-inch NPT pilot control connection.

CAUTION If the ball adjuster (key 10) has been replaced or adjusted previous to this step, set pressure adjustment should not be performed for at least 20 minutes after movement of the ball adjuster.

The ball adjuster threads are coated with Loctite 222 sealant (key 31) to prevent the ball adjuster from turning in the set pressure adjusting screw (key 6) during set pressure adjustment.

If the seal has been broken by turning the ball adjuster, the Loctite sealant requires 20 minutes to set up. Failure to allow the Loctite sealant to set up may result in improper pilot adjustment or pilot ball damage due to ball adjuster movement during set pressure adjustment.

2. To adjust the compression of the pilot control spring (key 11) remove the pipe plug (key 21) with a 5/16-inch hex (Allen) wrench.

3. With the same wrench, rotate the adjusting screw (key 6) clockwise to increase the set pressure or counterclockwise to decrease it. Use a pressure gauge to monitor the pressure. Then replace the pipe plug.

SHUTDOWN STARTUP CAUTION To prevent piston pressure from overloading and damaging the main valve disk in the following procedures, the main valve inlet must be pressured at the same time as the pilot.

Set pressure is defined as the pressure at which the main valve starts to discharge. The unit has been designed such that a 10 percent buildup in this pilot set pressure will assure the main valve to be wide open.

Therefore, set pressure plus 10 percent overpressure will yield full capacity from the relief valve. The set pressure of the unit has been stamped on the pilot nameplate, and is adjusted by changing the pilot control spring compression.

Key numbers in this procedure are shown in figures 6 and 7.

1. Gradually introduce upstream pressure to both main valve and pilot over at least a 30-second interval. Too quick an introduction of upstream pressure will cause the main valve to lift open and leak, since the pilot will not have time to fill the piston chamber with enough pressure to close the valve. On back pressure or bypass applications, also open the downstream manual control valve and close the bypass valve.

4

Because relief valve operation is dependent on upstream pressure, it is only necessary to gradually close the main block valve (figures 3 and 4).

PRINCIPLE OF OPERATION The key to relief valve operation is the pilot ball (figure 5), which is anchored between the ball adjuster and ball seat. Inlet pressure registers on the main valve disk and enters the pilot through the control line. As long as inlet pressure remains below set pressure, the pilot control spring holds the pilot exhaust ball seat ring against the pilot ball. Inlet pressure loads the piston through the pilot restriction and keeps the main valve closed.

An inlet pressure rise above the set pressure overcomes the pilot control spring and strokes the pilot exhaust ball seat ring away from the ball. Piston loading pressure bleeds downstream through the pilot exhaust ball seat ring faster than it can build up through the pilot restriction.

This permits inlet pressure to unbalance the main valve disk and open the main valve. As inlet pressure drops back to set pressure, the pilot control spring pushes the pilot diaphragms and pilot exhaust ball seat ring back against the ball. Inlet pressure again loads the piston and closes the main valve.

Type 414-6305 PILOT BALL SPRING AND SEAT

PILOT BALL

PILOT EXHAUST ORIFICE

BALL ADJUSTER (FACTORY SET)

FROM CONTROL LINE

PILOT RESTRICTION SPACER AND DIAPHRAGMS W2897-1*

VENT

SET PRESSURE ADJUSTING SCREW ANTIROTATOR

TO TO TYPE EXHAUST 414 RELIEF VALVE

PILOT BALL SPRING AND SEAT

TYPE 6305B MOUNTING

PILOT BALL

PILOT EXHAUST BALL SEAT RING BALL ADJUSTER (FACTORY SET) TYPE 6305

CONTROL LINE (FILTER NOT SHOWN)

PILOT RESTRICTION

SET PRESSURE ADJUSTING SCREW

SPACER AND DIAPHRAGMS

ANTIROTATOR PILOT CONTROL SPRING ONLY ONE EXHAUST LINE REQUIRED FROM BOTH PISTON AND PILOT

PISTON BACKUP RINGS

INLET (CONTROLLED) PRESSURE LOADING PRESSURE OUTLET (EXHAUST) PRESSURE

PLUG WIPER RING DISC

W2547-1*

Figure 5. Type 414-6305 Relief Valve in Closed Position The Type 6305B pilot differs from the Type 6305 pilot in that it has an additional diaphragm to counterbalance back pressure forces tending to keep the pilot exhaust ball seat ring against the ball.

MAINTENANCE Relief valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection and parts replacement depends on the severity of service conditions.

WARNING To avoid personal injury or equipment damage from sudden release of pressure or explosion

of accumulated gas, do not attempt any maintenance or disassembly without first isolating the pilot and main valve from system pressure and relieving all internal pressure from the pilot and main valve.

Type 6305 and 6305B Pilots If the pilot leaks continuously or does not operate the main valve, the problem may be due to clogging or freezing in the pilot restriction, misadjustment of the ball adjuster, or insufficient seating of the ball. Perform the “Pilot Seating Adjustment” procedure for a misadjusted ball adjuster or ball.

Perform the “Disassembly” and “Assembly” procedures that follow the “Pilot Seating Adjustment” section if any pilot parts need to be repaired or replaced. All key numbers refer to figures 6 and 7 unless otherwise indicated.

5

Type 414-6305

Pilot Seating Adjustment The pilot ball adjuster has been factory set. Seating adjustment should be performed only if improper pilot operation is suspected. Part key numbers refer to figures 6 and 7 unless otherwise indicated. The seating of the ball (key 15) molds the ball to the ball seat ring (key 14) to give the pilot bubble-tight shutoff. This seating is accomplished by pressuring the pilot in order to force the ball into the ball seat ring, cutting a seat line on the ball.

Note The pilot may remain on the main valve if the main valve inlet will be pressured at the same time as the pilot, to keep from overloading the main valve disk. If only the pilot will be pressured, the tubing (key 26, figure 8) and control line must be disconnected. The pilot must be removed from the pipe nipple (key 24, figure 8) and the 1/2-inch NPT connection in the side of the pilot body (key 2) plugged.

1. Remove the pipe plug (key 21) with a 5/16-inch hex (Allen) wrench. With the same wrench, rotate the adjusting screw (key 6) counterclockwise until it cannot be backed out any further. Then rotate the screw in (clockwise) 8 turns.

Note The ball adjuster (key 10) screw slot is covered with Loctite 271 sealant (key 32) at the factory to prevent accidental ball adjuster movement during set pressure adjustment. Be careful not to damage the screw slot when removing the Loctite sealant.

2. Back out (counterclockwise) the ball adjuster (key 10) 2 to 3 turns to assure no contact with the ball (key 15).

3. Introduce (from a source such as shown in figure 3) pressure at least 50 percent of but no more than set pressure, into the 1/2-inch NPT control line connection.

The ball should seat into the ball seat ring (key 14), and leakage out the 1/4-inch NPT pilot exhaust connection should stop soon. The higher the pressure, the easier it will be for the ball to seat. With pressures above 200 psig (13.8 bar) introduced to the pilot, the ball should seat almost immediately. Otherwise, it may take a few minutes.

4. If the exhaust connection bubbles, wait approximately five minutes for the ball to seat in on the orifice. First-time seating period is a function of time, temperature, and pressure drop across the ball. If the ball still does not seat, then increasing the pressure in the 1/2-inch NPT control connection will increase the pressure drop across the ball and cause it to seat faster. Make sure the spring setting is always higher than the pressure introduced to

6

the pilot by at least one rotation. Replace the ball according to the “Disassembly” and “Assembly” sections following this procedure if the ball still will not seat and damage is suspected.

Note A seat line is cut into the polypropylene plastic of the ball during seating. To keep this seat line from crossing the ball seating line and thus preventing the ball from sealing completely, do not shift the ball during steps 5, 6 and 7.

5. Once the ball is seated and there is no bubbling from the exhaust connection, very carefully reposition the ball adjuster.

Without changing the pilot control pressure or pilot spring setting, turn the ball adjuster into the pilot to just touch the ball until a continuous (approximately one bubble per second) leak rate is established.

6. Back off the ball adjuster 1/8 of a turn away from the point where the pilot exhaust connection stops bubbling. The ball seat adjustment is now made on the pilot and should not be changed.

7. A bubble point for the main valve is impossible to determine (due to the unbalance area of the main valve port versus piston, and the gain of the pilot system). The main valve will start to flow shortly after the pilot exhaust has gone from bubbles per second to a continuous audible bleed rate. Reapply Loctite 271 sealant (key 32) to the ball adjuster screw head.

CAUTION Allow 20 minutes after pilot seating adjustment before performing set pressure adjustment to ensure the Loctite 222 sealant (key 31) on the ball adjuster (key 10) threads has set up, movement of the ball adjuster during set pressure adjustment may cause improper seating adjustment or damage to the pilot ball.

8. Complete the “Startup” procedure, making sure the pipe plug (key 21) is installed upon completion. If the pilot was removed, install it on the pipe nipple and connect the tubing and control line. Release pressure from the unit if any further maintenance will be performed.

Disassembly 1. Disconnect the tubing (key 26, figure 8) and control line from the pilot.

Type 414-6305 2. Remove the pipe plug (key 21) with a 5/16-inch hex (Allen) wrench. With the same wrench, rotate the adjusting screw (key 6) counterclockwise until all tension is removed from the pilot control spring (key 11).

3. Remove the four cap screws (key 20), inlet flange (key 3), diaphragm O-ring (key 4), spring case (key 1), another diaphragm O-ring, spring seat (key 13), pilot control spring, adjusting screw with attached adjusting nut (key 7), and ball adjuster (key 10). If necessary to replace the adjusting screw or ball adjuster, use Loctite 222 sealant (key 31) on the male threads of the ball adjuster when reassembling these parts. This is to prevent loosening due to vibration.

Note If the seat line of a used ball crosses the ball seat ring line on a rebuilt pilot, the ball will not seal completely. Even if seating is tried again, a new seat line cannot be cut across a previous one. The best solution is to use a new ball when rebuilding the pilot. If necessary, however, a ball may be reused once. It is possible through trial and error to use a small dab of grease to stick the ball to its ball seat so that the side of the ball meeting the ball seat ring line does not have a previous seat line cut into it. This is a difficult procedure and should only be used if a new ball is not available.

4. For Type 6305B, remove the body spacer (key 23, figure 6). Examine the diaphragms and replace if necessary.

Unscrew and remove spacer (key 24, figure 6).

5. Remove the ball seat ring (key 14) and/or restriction (key 19) as necessary for replacement, or to replace any of the following: ball (key 15), ball seat (key 16), ball spring (key 17), any of the four diaphragms (key 5) or O-rings they still retain, spacer O-rings (key 18), or spacer (key 9). Upon buildup, make sure that the diaphragms are oriented with their slight convolutions as shown in figure 6.

Assembly 1. Install new diaphragm O-rings into the spring case and inlet flange grooves.

2. Lubricate the surfaces between the adjusting screw and spring case to prevent galling.

3. Install the adjusting screw with attached adjusting nut and ball adjuster into the spring case while the spring case is upside down, making sure that the adjusting nut groove slides down over the antirotator (key 8). Install the pilot control spring and spring seat.

Note In the following step, look along the pilot in the downstream direction and make sure that the spring case connection will be to the right of the body connection for right-side tubing mounting or to the left for left-side mounting. In both cases, the spring case connection must be 90 degrees from the body connection.

4. Install the spring case containing its properly assembled parts on the pilot body, securing with the inlet flange and cap screws. Perform the “Pilot Seating Adjustment” and “Startup” steps, making sure the pipe plug is installed upon completion.

Type 414 Main Valve If the main valve will not shut off, even with proper pilot operation, the problem may be due to chips or other foreign material caught between the disk assembly and seat ring, or to wear or damage in these parts that causes leakage.

Perform this procedure if any main valve parts are to be repaired or replaced. Part key numbers are shown in figure 9 unless otherwise specified.

All steps in this section may be performed with the valve body in the line. Drain tapping constructions have a removable pipe plug (key 23). Grease replacement Orings to assure pressure seals.

Disassembly 1. Disconnect the tubing (key 26, figure 8) and control line from the pilot. The pilot may remain attached to the flange (key 3) unless the flange must be repaired or replaced. Disconnect any pilot exhaust line from the pipe tee (key 28, figure 8).

CAUTION Do not damage the disk (key 7) when setting the assembly down upon completion of the following step.

2. Unscrew the hex nuts (key 14) and remove the flange, spring (key 20), cylinder (key 2), and attached piston, stem and plug/disk assembly. Replace the cylinder O-rings (key 19) if necessary.

3. Inspect the seat ring (key 4) and replace if damaged.

A 6-inch body also has a seat ring O-ring (key 24) that may need to be replaced. A frozen seat ring may be removed by applying a puller or similar suitable tool to the seat ring lugs. If a Fisher puller is used, 2-inch through 4-inch bodies require a size 30 puller while a 6-inch body requires a size 40 puller.

7

Type 414-6305

4. Thoroughly clean the body and the threads of the replacement seat ring. Install a seat ring O-ring on a 6inch body. Apply a good grade of thread lubricant to the seat ring threads, install the seat ring, and wipe off the excess lubricant.

CAUTION Overload damage to disk and plug can occur if, after installation, the top of the piston is pressurized without equivalent pressure on the inlet side of the main valve.

5. Remove the bottom hex nut (key 10) to inspect or replace the disk retainer (key 9), disk (key 7), plug Oring (key 8) or plug (key 6).

Note In the following steps, look along the valve body in the downstream direction and make sure that the cylinder connection will line up vertically with the pilot spring case connection for the tubing mounting desired (right or left side).

6. Remove the top hex nut to inspect or replace the piston (key 15), piston O-ring (key 17), piston backup ring (key 16), or O-ring between piston and stem (key 5).

7. To gain access to the wiper ring (key 11), stem Oring (key 12), or stem backup ring (key 13), remove the appropriate parts from either end of the stem and remove the stem.

5. Install the cylinder and attached piston, stem, and plug/disk assembly on the valve body.

6. Remove the pipe plug from the pipe tee or cylinder tapping to permit this assembly to settle down and close the valve.

Assembly 1. Install the wiper ring in the cylinder and lubricate the inside cylinder walls with a good grade of grease.

2. Install the stem backup ring and stem O-ring into the cylinder, and insert the stem in the cylinder.

3. As appropriate, install the O-ring at the top of the stem, piston, top hex nut, piston backup ring, and piston O-ring; or the plug, plug O-ring, disk, disk retainer, and bottom hex nut. Lubricate the sliding surfaces of the piston with Dow Corning No. 3 silicone grease or the equivalent.

4. Slide the valve stem up so that the piston is just inside the cylinder well, and then install a 1/4-inch pipe plug in the pipe tee (key 28, figure 8) or side cylinder tapping. Air trapped by the piston will hold up the stem and plug/disk assembly, thus permitting installation with less chance of damaging seating parts.

Key

PARTS LIST Pilot & Mounting Parts (figure 6, 7, and 8)

3 4*

Pilot parts listing applies to both Type 6305 and 6305B pilots unless otherwise indicated.

Key 1 2

Description Spring Case, 416 SST Body, 416 SST

Part Number

23A5544 X012 23A5545 X012

5

6

7. Install the spring, flange, and hex nuts, using a crisscross tightening pattern on the hex nuts until the flange is uniformly snugged down on the studs (key 18).

8. Connect any pilot exhaust line to the pipe tee. Install the pilot if it is removed and connect the tubing and control line to it.

PARTS ORDERING Each pilot/valve assembly is assigned a serial number which can be found on the pilot nameplate. Refer to the number when contacting your Fisher representative for assistance, or when ordering replacement parts.

When ordering a replacement part, be sure to include the complete 11-character part number from the following Parts List.

Description

Part Number

Pilot Inlet Flange 416 SST 23A5546 X012 Diaphragm O-Ring 6305 (4 req’d) 6305B (6 req’d) -20 to 180°F (-29 to 82°C) service, Nitrile 1K5949 06562 0 to 350øF (-18 to 177øC) service, Viton 13A5559 X012 Diaphragm, 320 SST 6305 (4 req’d) 6305B (6 req’d) Adjusting Screw, 416 SST

Key 7 8 9 10 11

13A5542 X012 13A5552 X012

*Recommended spare part.

8

Description Adjusting Nut, 416 SST Antirotator, 416 SST

Part Number

13A5551 X012 13A5554 X012

Spacer, 416 SST 13A5548 X012 Ball Adjuster, 416 SST 13A5550 X012 Pilot Control Spring, plated steel Red [100-200 psig (6.9 to 17.2 bar) set pressure range—not recommended with TFE main valve disc] 1K7485 27202 Blue [250-400 psig (17.2 to 27.6 bar) set pressure range—not recommended with TFE main valve disc] 1L3461 27142

Type 414-6305

23A5557-B

Figure 6. Type 6305 Pilot Construction

13A8628-A

Key

12

Description

Figure 8. Pilot Mounting

Part Number

Zinc [400-1200 psig (27.6 to 82.7 bar) set pressure range—not recommended with nitrile or Viton main valve disc] 13A5543 X012 Drive Screw, 18-8 SST (4 req’d) 1A3682 28982

13

Spring Seat, 416 SST 14 Ball Seat Ring, 416 SST 15* Ball, polypropylene 16 Ball Seat, 416 SST

Key 23 24

24 25

13A5549 X012 13A5553 X012 13A5556 X012 13A5555 X012

Ball Spring, steel Cd pl 1K6191 27012 18* Spacer O-Ring 6305 (2 req’d) 6305B (3 req’d) –20 to 180°F (–29 to 82°C) service, Nitrile 1P4207 06992 0to 350°F (–18 to 177°C) service, Viton 1L9493 06382

26 27

17

19 20 25A1585-C

Figure 7. Type 6305B Pilot Construction

21

22

Restriction, 416 SST Cap Screw, steel, pl (4 req’d)

28 29 30 31

13A5547 X012 1A6430 24052

Pipe Plug, alloy steel, Pl

11A4718 X012

Nameplate, Aluminum

13A5623 X012

32

Description Body Spacer (6305B only) Spacer (6305B only)

Part Number

15A1582 X012 15A1584 X012

Pipe Nipple, Carbon steel 1B8286 X0012 Ball Adjuster O-Ring –20 to 180°F (–29 to 82°C) service, Nitrile 1E2226 06992 0 to 350°F (–18 to 177°C) service, Viton 1N8387 06382 Tubing, steel 050021 2401W Connector, carbon steel, pl (2 req’d) 1J1395 28982 Pipe Tee, steel, Galvanized 1B2189 Pipe Nipple, steel Zn gal 1B2188 Vent Screen, (6305B only) 0L0783 Loctite 222 Sealant, 10 cc bottle (not furnished with pilot) 1M5947

21992 26232 43062

X0012

Loctite 271 Sealant, 10 cc bottle (not furnished with pilot) 1M5933 X0012

9

Type 414-6305

Key 6

7*

Part Number

Key

Type 414 Main Valve (figure 9) 1

Valve Body, WCB steel (raised face flanges) Without drain tapping 1 inch size Class 150 2R2723 X0012 Class 300 2R2725 X0012 Class 600 2R2727 X0012 2 inch size Class 150 2R3165 X0012 Class 300 2R3167 X0012 Class 600 2R3169 X0012 3 inch size Class 150 2R3391 X0012 Class 300 2R3393 X0012 Class 600 2R3395 X0012 4 inch size Class 150 2R3545 X0012 Class 300 2R3547 X0012 Class 600 2R3551 X0012 6 inch size Class 300 23A5616 X012 Class 600 23A5615 X012 With drain tapping 1 inch size Class 150 2R2733 X0012 Class 300 2R2735 X0012 Class 600 2R2737 X0012 2 inch size Class 150 2R3175 X0012 Class 300 2R3177 X0012 Class 600 2R3179 X0012

2

3

4*

5

Description 3 inch size Class 150 Class 300 Class 600 4 inch size Class 150 Class 300 Class 600 6 inch size Class 300 Class 600 Cylinder, ENC 1 inch body, 410 SST 2 inch body, 410 SST 3 inch body, WCB HT 4 inch body, WCB HT 6 inch body, WCB HT Flange, WCB steel 1 inch body 2 inch body 3 inch body 4 inch body 6 inch body Seat Ring 1 inch body, 416 SST 2 inch body, 416 SST 3 inch body, 410 SST 4 inch body, 410 SST 6 inch body, 410 SST Stem, 416 SST 1 inch body 2 inch body 3 inch body 4 inch body 6 inch body

Part Number

10

X012 X012 X012 X012 X012

25A0795 23A5570 23A5585 23A5600 23A5508

X012 X012 X012 X012 X012

15A0801 13A5569 13A5584 13A5598 13A5613

X012 X012 X012 X012 X012

15A0798 13A5566 13A5581 13A5595 13A5609

X012 X012 X012 X012 X012

*Recommended spare part.

10

X012 X012 X012 X012 X012

Disk Retainer, 416 SST 1 inch body 15A0799 X012 2 inch body 13A5568 X012 3 inch body 13A5583 X012 4 inch body 13A5597 X012 6 inch body 13A5611 X012 Hex Nut, steel, Cd pl (2 req’d) 1 inch body 1E9440 24112 2 inch body 1H4833 24122 3 inch body 1A4201 24122 4 inch body 1A3754 24122 6 inch body 1C6419 24122 Wiper Ring –20 to 200°F (–29 to 93°C) service, Urethane 1 inch body 15A0718 X012 2 inch body 13A5563 X012 3 inch body 13A5579 X012 4 inch body 13A5591 X012 6 inch body 13A5606 X012 0 to 350°F (–18 to 177°C) service, TFE 1 inch body 15A6238 X012 2 inch body 13A5624 X012 3 inch body 13A5625 X012 4 inch body 13A2355 X012 6 inch body 13A3759 X012

2R3555 X0012 2R3557 X0012 2R3561 X0012

25A0796 23A5561 23A5577 23A5589 23A5604

X012 X012 X012 X012 X012

9

2R3399 X0012 2R3401 X0012 2R3403 X0012

23A5622 X012 23A5621 X012

Plug, 416 SST 1 inch body 15A0800 2 inch body 13A5567 3 inch body 13A5582 4 inch body 13A5596 6 inch body 13A5610 Disk, 0 to 350°F (-18 to 177°C) service, TFE 1 inch body 10A8224 2 inch body 10A8225 3 inch body 10A8226 4 inch body 10A8227 6 inch body 13A5612

O-Ring (2 req’d) -20 to 180°F (-29 to 82°C) service, Nitrile 1 inch body 1H2923 06992 2 inch body 1J4888 06992 3 inch body 1E5914 06992 4 inch body 1H4816 X00A2 6 inch body 1B8855 06992 0 to 350°F (-18 to 177°C) service, Viton 1 inch body 1N1162 06382 2 inch body 1U9998 06382 3 inch body 1N1630 06382 4 inch body 1N1632 06382 6 inch body 1N1629 06382

Figure 9. Type 414 Main Valve Construction Description

Part Number

8*

33A5572-A

Key

Description

11

Type 414-6305

Key

Description

Part Number

12* Stem O-Ring -20 to 180°F (-29 to 82°C) service, Nitrile 2 inch body 1H8498 06992 3 inch body 1H2918 06562 4 inch body 1K1222 06562 6 inch body 1K1365 06562 0 to 350°F (-18 to 177°C) service, Viton 2 inch body 1N3781 06382 3 inch body 1N1633 06382 4 inch body 1L1124 06382 6 inch body 1L1126 06382 13* Stem Backup Ring, TFE (2 req’d) 2 inch body 13A5564 X012 3 inch body 1V4356 06242 4 inch body 13A5592 X012 6 inch body 13A5565 X012 14 Hex Nut, steel 1 inch body (4 req’d) 1C3306 24072 2 inch body (8 req’d) 1A3772 24072 3 inch body (8 req’d) 1A3760 24072 4 inch body (8 req’d) 1A3520 24072 6 inch body (12 req’d) 1A4409 24072 15 Piston, 416 SST 1 inch body 15A0797 X012 2 inch body 13A5562 X012 3 inch body 13A5578 X012 4 inch body 13A5590 X012 6 inch body 13A5605 X012 16* Piston Backup Ring, TFE (2 req’d) 1 inch body 14A9690 X012 2 inch body 13A5565 X012 3 inch body 13A5580 X012 4 inch body 13A5593 X012 6 inch body 13A5607 X012

Key

Description

Part Number

17* Piston O-Ring -20 to 180°F (-29 to 82°C) service, Nitrile 1 inch body 1N9553 06562 2 inch body 1K1365 06992 3 inch body 1H7928 06992 4 inch body 1P2332 06992 6 inch body 1H9724 06992 0 to 350°F (-18 to 177°C) service, Viton 1 inch body 1N9611 06382 2 inch body 1L1126 06382 3 inch body 1N3780 06382 4 inch body 13A5601 X012 6 inch body 13A5618 X012 18 Stud, Continuous Thread, steel 1 inch body (4 req’d) 1N3432 31012 2 inch body (8 req’d) 1H9892 31012 3 inch body (8 req’d) 13A5587 X012 4 inch body (8 req’d) 11A7570 X012 6 inch body (12 req’d) 12A3315 X012

Key

Description

20

Spring, steel, Cd pl 1 inch body 2 inch body 3 inch body 4 inch body 6 inch body

Part Number

1V1171 27052 1K1565 27022 1K1163 27022 13A5594 X012 1K1206 27022

21

Flow Arrow, 18-8 SST 1V1059 38982 22 Drive Screw, 18-8 SST (2 req’d) 1A3682 28982 23 Pipe Plug (for tapped body only), Carbon steel 1A7715 28992 24* Seat Ring O-Ring (for 6 inch body only) -20 to 180°F (-29 to 82°C) service, Nitrile 13A5617 X012 0 to 350°F (-18 to 177°C) service, Viton 13A5620 X012

19* Cylinder O-Ring (2 req’d) -20 to 180°F (-29 to 82°C) service, Nitrile 1 inch body 1V3234 06562 2 inch body 1K1810 06992 3 inch body 1P5586 06992 4 inch body 13A5599 X012 6 inch body 13A5614 X012 0 to 350°F (-18 to 177°C) service, Viton 1 inch body 1V3651 06382 2 inch body 13A5571 X012 3 inch body 13A5586 X012 4 inch body 13A5602 X012 6 inch body 13A5619 X012

*Recommended spare part.

11

Type 414-6305

While this information is presented in good faith and believed to be accurate, Fisher Controls 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

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