Y610~Y611~Y612 Instruction Manual July 1986 by RMC Process Controls & Filtration, LLC.

Y610, Y611, & Y612 Series

Fisher Controls

Instruction Manual

Y610, Y611, & Y612 Series Vacuum Service Equipment and Relief Valves July 1986

Form 1477

Incorporates June 1994 Errata Sheet–See Page 20

Introduction Scope of Manual This manual describes and provides instructions and parts lists for Y610, Y611, and Y612 Series vacuum service equipment and relief valves. Instructions and parts lists for other equipment used with these regulators are found in separate manuals.

Product Description The Y610, Y611, and Y612 Series devices are used in a wide variety of vacuum and relief service applications. The Y610 Series devices (figure 1) are used as vacuum breakers, the Y611 Series devices are used as either vacuum breakers or relief valves, and the Y612 Series devices are used as vacuum regulators, and are described as follows: Type Y610—Self-operated vacuum breaker with upwardpointing 1/4-inch vent connection, and internal registration requiring no downstream control line. Type Y610A—Larger-size Type Y610 with 1-inch NPT screened side vent. Type Y610AP—Same as Type Y610A except with blocked throat, diaphragm case assembly tapped 1/2inch NPT for control line connection, and O-ring stem seal. Type Y611—Self-operated relief valve with upward pointing 1/4-inch NPT vent connection, and internal registration requiring no downstream control line.

W1094-1

Figure 1. Type Y610A Vacuum Breaker Type Y611AP—Self-operated vacuum breaker with blocked throat, 1-inch NPT screened side vent, diaphragm case assembly tapped 1/2-inch NPT for control line connection, and O-ring stem seal. Type Y611AKP—Type Y611AP for higher pressure settings. Type Y611C—Self-operated relief pilot with upward pointing 1/4-inch NPT vent connection, diaphragm case assembly tapped 1/2-inch NPT for control line connection, and solid throat.

Type Y611A—Larger-size Type Y611 with 1-inch NPT side screened vent.

Type Y611P—Self-operated vacuum breaker with blocked throat, upward pointing 1/4-inch NPT vent connection, diaphragm case assembly tapped 1/2-inch NPT for control line connection, and O-ring stem seal.

Type Y611AK—Type Y611A for higher pressure settings.

Type Y611RR—Type Y611C with bleed hole in throat, typically used as pilot for Type 66RR relief valve.

Y610, Y611, & Y612 Series Table 1. Specifications BODY SIZES (INLET X Type Y610: n 3/4 x 3/4, n 3/4 x 1, OUTLET) AND END n 1 x 1, n 1 x 1-1/4, or n 1-1/4 x CONNECTION STYLE(1) 1-1/4 inch NPT screwed

Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP: n 1-1/2 x 1-1/2 or n 2 x 2 inch NPT screwed, or n 2 x 2 inch Class 125A FF or 250 RF flanged Type Y611, Y611C, Y611P, Y611RR, or Y612: n 3/4 x 3/4, n 1 x 1, or n 1-1/4 x 1-1/4 inch NPT screwed PRESSURE INFORMATION(2)

Type Y610, Y610A, or Y610AP Vacuum Breaker: See table 2 Type Y611, Y611C, Y611P, or Y611RR Relief Valve: See table 3 Type Y611A, Y611AK, Y611AKP, or Y611AP Relief Valve: See table 4 Type Y612 Vacuum Regulator: See table 5

1. DIN (or other) end connections threaded to various national or international thread standards can usually be supplied; consult the Fisher sales office or sales representative.

Type Y612A or Y612AP Vacuum Regulator: See table 6 TEMPERATURE CAPABILITIES(2)

– 20 to 150°F ( – 29 to 66°C)

PRESSURE REGISTRATION

Type Y610, Y610A, Y611, Y611A, Y611AK, Y612, or Y612A: Internal Type Y610AP, Y611C, Y611P, Y611RR, Y611AP, Y611AKP, or Y612AP: External

APPROXIMATE WEIGHTS

Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612: 13 pounds (6 kg) Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP With 1-1/2 x 1-1/2 Inch Body: 25 pounds (11 kg) With 2 x 2-Inch Body: 30 pounds (14 kg)

2. The pressure/temperature limits in this manual and any applicable standard limitation should not be exceeded.

Type Y612—Self-operated vacuum regulator with upward pointing 1/4-inch NPT vent connection, and internal registration requiring no downstream control line. Type Y612A—Larger-size Type Y612 with 1-inch NPT screened side vent. Type Y612AP—Same as Type Y612A except with blocked throat, diaphragm case assembly tapped 1/2inch NPT for control line connection, and O-ring stem seal.

Specifications Table 1 gives some general Y610, Y611, and Y612 Series ratings and other specifications. Individual regulator data as it comes from the factory is stamped either on the closing cap or on a nameplate (figure 2).

11A5497-J

Figure 2. Nameplate

Y610, Y611, & Y612 Series

Table 2. Type Y610,Y610A, and Y610AP Vacuum Breaker Pressure Information

TYPE NUMBER

MAXIMUM ALLOWABLE INLET (BODY) PRESSURE Psig

Y610

Y610A, Y610AP

Bar

150

MAXIMUM EMERGENCY OUTLET (CASING) PRESSURE (POSITIVE) Psig

Bar

0.83

1.0

MAXIMUM ALLOWABLE VACUUM

OUTLET PRESSURE RANGE, VACUUM

With Spring Case Above Diaphragm 0 to 2.7 Inches WC (0 to 6.7 mbar) 0 to 1-1/2 Inches Hg (0 to 51 mbar) 0 to 3-1/4 Inches Hg (0 to 110 mbar) 0 to 5-1/2 Inches Hg (0 to 186 mbar) 0 to 9.6 Inches Hg (0 to 325 mbar) 1 to 3 Inches WC (2.5 to 7 mbar) 1-1/2 to 5 Inches WC (3 to 12 mbar) 3 to 8 Inches WC (7 to 20 mbar) 8 to 16 Inches WC (20 to 40 mbar) 16 to 32 Inches WC (40 to 80 mbar) 1/4 to 3 psig (17 to 207 mbar)

With Spring Case Below Diaphragm 0 to 2.2 Inches WC (0 to 5.5 mbar) 0 to 1-1/2 Inches Hg (0 to 51 mbar) 0 to 3-1/4 Inches Hg (0 to 110 mbar) 0 to 5-1/2 Inches Hg (0 to 186 mbar) 0 to 9.6 Inches Hg (0 to 325 mbar) 0 to 2 Inches WC (0 to 5.0 mbar) 1/2 to 4 Inches WC (1.2 to 10.0 mbar) 2 to 7 Inches WC (5 to 17 mbar) 7 to 15 Inches WC (17 to 37 mbar) 15 to 31 Inches WC (37 to 77 mbar) 1/4 to 3 psig (17 to 207 mbar)

Psig

Bar

5.1

0.35

5.7

CHANGE IN OUTLET (CONTROLLED) CONTROL SPRING PRESSURE REQUIRED TO FULLY OPEN COLOR VACUUM BREAKER CODE(1) Psig

mbar

Cadmium

0.023

1.6

0.39

Cadmium

0.161

11.1

6.5

0.45

Cadmium

0.357

7.4

0.51

Dark Green

0.511

9.2

0.63

Yellow

1.190

5.1

0.35

Brown

0.043

3.0

5.2

0.36

Cadmium

0.078

5.4

5.3

0.37

Purple

0.143

9.9

5.6

0.39

Gray

0.181

6.1

0.42

Cadmium

0.378

8.0

0.55

Black

1.944

134

1. Control spring part numbers are given in the parts list.

Table 3. Type Y611, Y611C, Y611P, and Y611RR Relief Valve Pressure Information MAXIMUM ALLOWABLE INLET (CASING) PRESSURE(1)

Psig

Bar

MAXIMUM OPERATING INLET (RELIEF) PRESSURE TO PREVENT PART DAMAGE(1) Psig

Bar

5-1/4

0.36

5-1/2

0.38

5-1/5

0.36

5-1/3

0.37

0.41

0.48

8-1/4

0.57

0.83

0.38

INLET RELIEF SET PRESSURE RANGE

With Spring Case Above Diaphragm 2-1/2 to 8 Inches WC (6 to 20 mbar) 3 to 14 Inches WC (7 to 35 mbar) 3-1/2 to 5-1/2 Inches WC (9 to 14 mbar) 6-1/2 to 8 Inches WC (16 to 20 mbar) 10 to 26 Inches WC (25 to 65 mbar) 25 Inches WC to 2 psig (62 to 138 mbar) 1-1/4 to 3-1/4 psig (86 to 224 mbar) 3-3/4 to 7 psig (259 to 483 mbar)

With Spring Case Below Diaphragm 2 to 7-1/2 Inches WC (5 to 19 mbar) 2-1/2 to 13-1/2 Inches WC (6.2 to 33 mbar) 3 to 5 Inches WC (7.5 to 13 mbar) 6 to 7-1/2 Inches WC (15 to 19 mbar) 9-1/2 to 25-1/2 Inches WC (24 to 64 mbar) 24 Inches WC to 2 psig (60 to 138 mbar) 1-1/4 to 3-1/4 psig (86 to 224 mbar) 3-3/4 to 7 psig (259 to 483 mbar)

BUILDUP OVER INLET PRESSURE REQUIRED TO FULLY OPEN RELEIF VALVE CONTROL SPRING COLOR CODE(2)

5/16 Inch (7.9 mm) Port Diameter

3/8 Inch (9.5 mm) Port Diameter

7/16 Inch (11.1 mm) Port Diameter

Psig

mbar

Psig

mbar

Psig

mbar

Red

0.022

1.5

0.052

3.6

0.096

6.6

Cadmium

0.033

2.3

0.077

5.3

0.143

9.9

Purple

0.020

1.4

0.046

3.2

0.086

5.9

Brown

0.013

0.9

0.038

2.1

0.056

3.9

Yellow

0.048

3.3

0.112

7.7

0.208

Light Green

0.141

9.7

0.329

0.611

Light Blue

0.300

0.700

1.300

Black

0.630

1.470

101

2.730

188

1. Including buildup. 2. Control spring part numbers are given in the parts list.

Y610, Y611, & Y612 Series

Table 4. Type Y611A, Y611AK, Y611AKP, and Y611AP Relief Valve Pressure Information

TYPE NUMBER

MAXIMUM ALLOWABLE INLET (CASING) PRESSURE(1) Psig

Y611A, Y611AP

Bar

Y611AK, Y611AKP

MAXIMUM OPERATING INLET (RELIEF) PRESSURE TO PREVENT PART DAMAGE(1)

1.0

Psig

Bar

5-1/8

0.35

5-1/4

0.36

5-1/3

0.37

5-1/2

0.38

0.41

6-1/2

0.45

7-1/2

0.52

8-1/2

0.59

0.83

1.0

INLET RELIEF SET PRESSURE RANGE

With Spring Case Above Diaphragm 3 to 4 Inches WC (7 to 9.5 mbar) 3-3/4 to 6 Inches WC (9 to 15 mbar) 5 to 8 Inches WC (12 to 20 mbar) 7 to 16 Inches WC (17 to 40 mbar) 10 to 30 Inches WC (25 to 75 mbar) 3/4 to 1-1/2 psig (52 to 103 mbar) 1 to 2-1/2 psig (69 to 172 mbar) 2 to 3-1/2 psig (138 to 241 mbar) 4 to 7 psig (276 to 483 mbar)

BUILDUP OVER INLET PRESSURE REQUIRED TO FULLY OPEN RELIEF VALVE

CONTROL SPRING COLOR CODE(2)

With Spring Case Below Diaphragm 2 to 3 Inches WC (5 to 7.5 mbar) 2-3/4 to 5 Inches WC (6.9 to 13 mbar) 4 to 7 Inches WC (10 to 17 mbar) 6 to 15 Inches WC (15 to 37 mbar) 9 to 29 Inches WC (22 to 72 mbar) 3/4 to 1-1/2 psig (52 to 103 mbar) 1 to 2-1/2 psig (69 to 172 mbar) 2 to 3-1/2 psig (138 to 241 mbar) 4 to 7 psig (276 to 483 mbar)

Psig

mbar

Brown

0.089

6.1

Red

0.100

6.9

Black

0.124

8.6

Gray

0.216

Dark Green

0.351

Dark Blue

0.648

Orange

1.026

Green Stripe

5.130

354

Cadmium

9.450

652

1. Including buildup. 2. Control spring part numbers are given in the parts list.

Table 5. Type Y612 Vacuum Regulator Pressure Information

MAXIMUM ALLOWABLE INLET (CASING) PRESSURE

MAXIMUM OPERATING INLET PRESSURE TO PREVENT PART DAMAGE

Psig

Bar

5.1

0.35

5.7

0.39

6.5

0.45

7.4

0.51

9.2

0.63

0.83

Bar

0.38

OUTLET PRESSURE RANGE (VACUUM)

1. Control spring part numbers are given in the parts list.

MAXIMUM ALLOWABLE CONTROL SPRING VACUUM COLOR CODE(1)

CHANGE IN OUTLET (CONTROLLED) PRESSURE REQUIRED TO FULLY OPEN VACUUM BREAKER 5/16 Inch (7.9 mm) Port Diameter

3/8 Inch (9.5 mm) Port Diameter

7/16 Inch (11.1 mm) Port Diameter

Psig

Bar

Psig mbar Psig mbar Psig mbar

5.1

0.35

Cadmium

0.016

1.1

0.037

2.6

0.069

4.8

5.7

0.39

Cadmium

0.081

5.6

0.189

0.351

6.5

0.45

Cadmium

0.165

0.385

0.715

7.4

0.51

Dark Green 0.234

0.546

1.014

9.2

0.63

Yellow

0.510

1.190

2.210

152

0.83

Blue

1.380

3.220

222

5.98

412

Y610, Y611, & Y612 Series Table 6. Type Y612A and Y612AP Vacuum Regulator Pressure Information

MAXIMUM ALLOWABLE INLET (CASING) PRESSURE

Psig

Bar

MAXIMUM OPERATING INLET PRESSURE TO PREVENT PART DAMAGE

Psig

Bar

5.1

0.35

5.2

0.36

5.3

0.37

5.6

0.39

6.1

0.42

8.0

0.55

1.0

MAXIMUM ALLOWABLE CONTROL SPRING VACUUM COLOR CODE(1)

OUTLET PRESSURE RANGE (VACUUM)

With Spring Case Above Diaphragm 1 to 3 Inches WC (2.5 to 7 mbar) 1-1/2 to 5 Inches WC (3 to 12 mbar) 3 to 8 Inches WC (7 to 20 mbar) 8 to 16 Inches WC (20 to 40 mbar) 16 to 32 Inches WC (40 to 80 mbar) 1/4 to 3 psig (17 to 207 mbar)

With Spring Case Below Diaphragm 0 to 2 Inches WC (0 to 5 mbar) 1/2 to 4 Inches WC (1.2 to 10 mbar) 2 to 7 Inches WC (5 to 17 mbar) 7 to 15 Iches WC (17 to 37 mbar) 15 to 31 Inches WC (37 to 77 mbar) 1/4 to 3 psig (17 to 207 mbar)

CHANGE IN OUTLET (CONTROLLED) PRESSURE REQUIRED TO FULLY OPEN VACUUM REGULATOR 5/8 Inch (15.9 mm) Port Diameter

1 Inch (25.4 mm) Port Diameter

1-3/16 Inch (30.2 mm) Port Diameter

Psig

Bar

Psig mbar Psig mbar Psig mbar

5.1

0.35

Brown

0.089

6.1

0.053

3.6

0.076

5.2

0.36

Cadmium

0.124

8.6

0.074

5.1

0.106

7.3

5.3

0.37

Purple

0.189

0.112

7.7

0.161

5.6

0.39

Gray

0.227

0.134

9.3

0.193

6.1

0.42

Cadmium

0.405

0.240

0.345

0.55

Black

1.944

134

1.152

1.656

114

1. Control spring part numbers are given in the parts list.

Note

Installation WARNING Personal injury, property damage, equipment damage, or leakage due to escaping gas or bursting of pressure-containing parts may result if this equipment is overpressured or is installed where service conditions could exceed the limits given in tables 2 through 6, 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 this equipment could cause personal injury or property damage due to escaping gas. To avoid such injury or damage, install the equipment in a safe and well ventilated location. Equipment operation within ratings does not preclude the possibility of damage from debris in the lines or from external sources. This equipment should be inspected for damage periodically and after any overpressure condition.

If this equipment 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 this equipment. For Y610, Y611, or Y612 Series equipment that is shipped separately, make sure that there is no damage to or foreign material in it. Also ensure that all tubing and piping have been blown free. 2. This equipment 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. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the equipment.

WARNING This equipment 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 equipment 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.

Y610, Y611, & Y612 Series

3. A Type Y610, Y610A, or Y610AP vacuum breaker (figure 3) is used in applications where an increase in vacuum must be limited. An increase in vacuum (decrease in absolute pressure) is transmitted to the lower side of the diaphragm, opening the disk assembly. This permits atmosphere, or an upstream vacuum that has higher absolute pressure than the downstream vacuum, to enter the system and restore the controlled vacuum to its original pressure setting. A Type Y610 (figure 4) or Y610A self-operated vacuum breaker is self-contained and requires no control line. A Type Y610AP vacuum breaker requires a control line from the 1/2-inch NPT tapping in the diaphragm case assembly (key 20, figure 5) to a point downstream of the body (key 28, figure 5). 4. A Type Y611AKP, Y611AP, or Y611P vacuum breaker (figure 3) also is used in applications where an increase in vacuum must be limited. An increase in vacuum (decrease in absolute pressure) is transmitted to the upper side of the diaphragm, opening the disk assembly. This permits atmosphere, or an upstream vacuum that has higher absolute pressure than the downstream vacuum, to enter the system and restore the controlled vacuum to its original pressure setting. A Type Y611AKP, Y611AP, or Y611P vacuum breaker requires a control line from the 1/4 or 1/2-inch NPT tapping in the spring case assembly (key 23, figure 7 or 8) to a point downstream of the body (key 28, figure 7 or 8). 5. A Type Y611, Y611A, Y611AK, Y611C, or Y611RR relief valve (figure 3) is used to maintain a constant inlet pressure with the outlet flowing to atmosphere or to any system whose pressure is lower than the pressure at the relief valve inlet. An increase in inlet pressure opens the disk assembly, relieving the excess pressure and restoring the inlet pressure to its original setting. A Type Y611, Y611A, or Y611AK self-operated relief valve is self-contained and requires no control line. A Type Y611C (figure 6) or Y611RR relief valve requires a control line from the 1/2-inch NPT tapping in the diaphragm case assembly (key 20, figure 6) to a point upstream of the body (key 28, figure 6). 6. A Type Y612, Y612A, or Y612AP vacuum regulator is used to maintain a constant vacuum at the regulator inlet. A decrease in this vacuum (increase in absolute pressure) beyond this value registers underneath the diaphragm and opens the disk. This permits a downstream vacuum of lower absolute pressure than the upstream vacuum to restore the upstream vacuum to its original pressure setting. A Type Y612 (figure 9) or Y612A (figure 10) self-operated vacuum regulator is self contained and requires no control line. A Type Y612AP vacuum regulator requires a control line from the 1/2inch NPT tapping in the diaphragm case assembly to a point upstream of the body.

Startup and Adjustment All Y610, Y611, or Y612 Series equipment can be placed in operation by slowly introducing inlet vacuum or pressure. This equipment takes control when downstream vacuum or pressure is established. This equipment is suitable for the pressure range stamped on the closing cap (key 3, figure 4, 6, or 9), or the nameplate (key 48, figure 5, 7, 8, or 10), and listed in tables 2 through 6. To adjust the pressure setting, remove the closing cap (key 3, figure 4, 5, 6, 7, 9, or 10), or the adjusting screw cap (key 62, figure 8), and turn the adjusting screw clockwise to increase the pressure setting or counterclockwise to decrease the setting. Replace the cap after making this adjustment. If desired, on all but the Type Y611AK relief valve or Type Y611AKP vacuum breaker, the closing cap may be wired to the hole provided in the spring case to discourage tampering.

Shutdown First close the nearest upstream shutoff valve and then close the nearest downstream shutoff valve to vent the equipment properly. Next, open the vent valve between the equipment and the downstream shutoff valve nearest to it. All pressure between these shutoff valves is released through the open vent valve.

Maintenance Equipment parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection and replacement of parts depends on the severity of service conditions and upon applicable codes and government regulations.

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 equipment.

Y610, Y611, & Y612 Series

VACUUM BEING LIMITED

ATMOSPHERE ONLY VACUUM PUMP Y610 SERIES VACUUM BREAKER Y611 SERIES VACUUM BREAKER

POSITIVE PRESSURE OR ATMOSPHERE, OR A LESSER VACUUM THAN THE VACUUM BEING LIMITED AJ7856-A A2991-2

VACUUM BEING LIMITED

Y610 SERIES VACUUM BREAKER VACUUM PUMP

AJ7853-A A2992-2

Y611 SERIES VACUUM BREAKER

INLET PRESSURE BEING CONTROLLED OR PROTECTED

UNAVOIDABLE LEAKAGE

VACUUM BEING CONTROLLED

Y612 SERIES VACUUM REGULATOR

Y611 SERIES RELIEF VALVE

HIGHER VACUUM SOURCE

P2 ATMOSPHERE OR ANY PRESSURE LESS THAN P1 AJ7854-A A2992-2

VACUUM PUMP AJ7855-A A2994-2

Y611 SERIES RELIEF VALVE

Y612 SERIES VACUUM REGULATOR

Figure 3. Installation Schematics

Body Area

with a good grade of pipe thread sealant and tighten using 29 to 37 foot-pounds (39 to 50 Nâ&#x20AC;˘m) of torque.

These procedures are for gaining access to the disk assembly, seat ring, and body gasket or diaphragm case O-ring. All pressure must be released from the diaphragm case before the following steps can be performed.

4. Remove the cotter pin (key 14) if it is necessary to replace the disk assembly (key 25).

Type Y610 Vacuum Breaker Key numbers are referenced in figure 4. 1. To inspect and replace the disk assembly (key 25) or seat ring (key 27), loosen the union nut (key 19), tip the diaphragm case assembly (key 20) toward the outlet, and separate the diaphragm case assembly from the body (key 28).

5. Install the disk assembly (key 25) and secure it to the valve stem (key 13) 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.

2. Remove and inspect the body gasket (key 16). 3. Inspect and replace the seat ring (key 27) if necessary. Lubricate the threads of the replacement seat ring

8. Install the diaphragm case assembly (key 20) by tightening the union nut (key 19) until the diaphragm case is secure on the body (key 28).

Y610, Y611, & Y612 Series

Type Y610A or Y610AP Vacuum Breaker Key numbers are referenced in figure 5. 1. To inspect or replace the seat O-ring (key 39) or seat ring (key 27), loosen the diaphragm case cap screws (key 29), remove the union ring (key 20D), and separate the diaphragm case assembly (key 20) from the body (key 28). 2. Remove the diaphragm case O-ring (key 15) and inspect the body (key 28). 3. Inspect and replace the seat ring (key 27) if necessary. Lubricate the threads of the replacement seat ring with a good grade of pipe sealant and tighten using 29 to 37 foot-pounds (39 to 50 N•m) of torque. 4. If it is necessary to replace the seat O-ring (key 39), remove the disk assembly cap screw (key 44), seal washer (key 45), seat O-ring washer (key 32), and seat O-ring from the valve stem (key 13). 5. Install the seat O-ring (key 39), seat O-ring washer (key 32), and seal washer (key 45) onto the seat O-ring holder (key 31), and secure with the disk assembly cap screw (key 44). 6. If necessary, install a replacement diaphragm case O-ring (key 15) into the body (key 28). 7. Install the diaphragm case assembly (key 20) on the body (key 28) and secure with the union ring (key 20D) and diaphragm case cap screws (key 29).

Type Y611, Y611C, Y611P, & Y611RR Vacuum Breaker, Relief Valve, or Relief Pilot or Type Y612 Vacuum Regulator Type Y611, Y611C, Y611P, and Y611RR key numbers are referenced in figure 6 and Type Y612 key numbers are referenced in figure 9. 1. To inspect and replace the disk assembly (key 25), remove the body cap assembly (key 38). 2. Remove the disk screw (key 42) and cotter pin (key 14) from the disk stem (key 40) if it is necessary to replace the disk assembly (key 25). 3. To inspect and replace the seat ring (key 27), loosen the union nut (key 19), tip the diaphragm case assembly (key 20) toward the inlet, and separate the diaphragm case assembly from the body (key 28). 4. Remove and inspect the body gasket (key 16). 5. Inspect and replace the seat ring (key 27) if necessary. Lubricate the threads of the replacement seat

ring with a good grade of pipe thread sealant and tighten using 29 to 37 foot-pounds (39 to 50 N•m) of torque. 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) by tightening the union nut (key 19) until the diaphragm case is secure on the body (key 28). 9. Install the disk spring (key 41) and disk assembly (key 25) and secure it to the disk stem (key 40) with the cotter pin (key 14). 10. Use a good quality thread sealer when replacing the body cap assembly (key 38).

Type Y611A, Y611AK, Y611AKP, or Y611AP Vacuum Breaker or Relief Valve or Type Y612A or Y612AP Vacuum Regulator Type Y611A, Y611AK, Y611AKP, and Y611AP key numbers are referenced in figure 7 and Type Y612A and Y612AP key numbers are referenced in figure 10. 1. To inspect and replace the disk assembly (key 25), remove the body cap (key 38). 2. Unscrew the disk spacer (key 43) and remove the disk assembly (key 25), disk assembly gasket (key 26), and disk spring (key 41) from the valve stem (key 40). 3. To inspect and replace the seat ring (key 27), loosen the diaphragm case cap screws (key 29), remove the union ring (key 20D), and separate the diaphragm case assembly (key 20) from the body (key 28). 4. Remove the diaphragm case O-ring (key 15) and inspect the body (key 28). 5. Inspect and replace the seat ring (key 27) if necessary. Lubricate the threads of the replacement seat ring with a good grade of pipe sealant and tighten using 29 to 37 foot-pounds (39 to 50 N•m) of torque. 6. If necessary, install a replacement diaphragm case O-ring (key 15) into the body (key 28). 7. Install the diaphragm case assembly (key 20) on the body (key 28) and secure with the union ring (key 20D) and diaphragm case cap screws (key 29).

Y610, Y611, & Y612 Series

8. Install the disk spring (key 41), disk assembly gasket (key 26), and disk assembly (key 25) on the disk stem (key 40) and attach using the disk spacer (key 43). 9. Use a good quality thread sealer when replacing the body cap (key 38) assembly.

Diaphragm and Spring Case Area These procedures are for gaining access to the control spring, diaphragm assembly, valve stem, and stem O-ring. All pressure must be released from the diaphragm case before these steps can be performed.

Type Y610 Vacuum Breaker

10. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22, not shown) to fingertightness only. 11. Install the upper spring seat (key 12) and the adjusting nut (key 18) turning clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm (key 5) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22, not shown) to 55 to 75 inch-pounds (6 to 8 Nâ&#x20AC;˘m) of torque. Then finish turning the adjusting nut (key 18) to the desired outlet pressure setting.

Key numbers are referenced in figure 4.

12. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

1. Remove the closing cap (key 3) and turn the adjusting nut (key 18) counterclockwise until all compression is removed from the control spring (key 1).

Type Y610A or Y610AP Vacuum Breaker

2. Remove the spring case cap screws (key 21) and hex nuts (key 22, not shown) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10. 3. Remove the diaphragm (key 5) and attached parts by tilting it so that the pusher post (key 8) slips off the lever assembly (key 9). To separate the diaphragm (key 5) from the attached parts, unscrew the diaphragm nut (key 37). If the only further maintenance is to replace the diaphragm parts or change the control spring (key 1), skip to step 8. 4. To replace the lever assembly (key 9), remove the machine screws (key 11) . 5. To replace the valve stem (key 13) also perform Type Y610 body area maintenance procedure steps 1 and 4 and pull the valve stem (key 13) out of the diaphragm case assembly (key 20). 6. Install the valve stem (key 13) into the diaphragm case assembly (key 20) and perform Type Y610 body area maintenance procedure steps 5 through 8. 7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the machine screws (key 11). 8. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), diaphragm (key 5), and small diaphragm plate (key 6) on the pusher post (key 8) and attach with the diaphragm nut (key 37). Tighten using 30 to 45 foot-pounds (41 to 61 Nâ&#x20AC;˘m) of torque. 9. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9).

Key numbers are referenced in figure 5. 1. Remove the closing cap (key 3) and turn the adjusting nut (key 18) counterclockwise until all compression is removed from the control spring (key 1). 2. Remove the spring case cap screws (key 21) and hex nuts (key 22) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10. 3. Remove the diaphragm (key 5) and attached parts by tilting it so that the pusher post (key 8) slips off the lever assembly (key 9). To separate the diaphragm (key 5) from the attached parts, unscrew the diaphragm nut (key 37). If the only further maintenance is to replace the diaphragm parts or change the control spring (key 1), skip to step 8. 4. To replace the lever assembly (key 9), remove the machine screws (key 11) and lever pin (key 10). 5. To replace the valve stem (key 13) or stem seal Oring (key 46) perform Type Y610A or Y610AP body area maintenance procedure step 4 and pull the valve stem out of the stem adaptor (key 60). 6. Grease the replacement stem seal O-ring (key 46) with a good grade of elastomer lubricant and install on the valve stem (key 13). Install the valve stem by pushing it into the stem adaptor (key 60) and perform Type Y610 or Y610AP body area maintenance procedure step 5, and step 6 if necessary. 7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the lever pin (key 10) and machine screws (key 11).

Y610, Y611, & Y612 Series

8. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), and diaphragm (key 5) on the pusher post (key 8) and attach with the diaphragm nut (key 37). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 9. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 10. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22) to fingertightness only. 11. Turn the adjusting nut (key 18) clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm (key 5) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22) to 55 to 75 inch-pounds (6 to 8 N •m) of torque. Then finish turning the adjusting nut (key 18) to the desired outlet pressure setting. 12. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

Type Y611, Y611C, Y611P, or Y611RR Vacuum Breaker, Relief Valve, or Pilot

6. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the machine screws (key 11). 7. Install the diaphragm (key 5), diaphragm plate (key 24), and control spring seat (key 4) on the pusher post (key 8) and attach with the diaphragm plate cap screw (key 64). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 8. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 9. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22, not shown) to fingertightness only. 10. 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) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22, not shown) to 55 to 75 inch-pounds (6 to 8 N•m) of torque. Then finish turning the adjusting screw (key 2) to the desired outlet pressure setting. 11. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

Key numbers are referenced in figure 6. 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).

Type Y611A or Y611AP Vacuum Breaker or Relief Valve

Key numbers are referenced in figure 7.

3. Remove the diaphragm (key 5) and attached parts by tilting it so that the pusher post (key 8) slips off the lever assembly (key 9). To separate the diaphragm (key 5) from the attached parts, unscrew the diaphragm plate cap screw (key 64). If the only further maintenance is to replace the diaphragm parts or change the control spring (key 1), skip to step 8.

2. Remove the spring case cap screws (key 21) and hex nuts (key 22) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10.

4. To replace the lever assembly (key 9), remove the machine screws (key 11). 5. To replace the valve stem (key 13) pull it out of the diaphragm case assembly (key 20) and install a new valve stem by pushing it into the diaphragm case assembly.

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).

Y610, Y611, & Y612 Series

5. To replace the valve stem (key 13) or stem seal O-ring (key 46) pull the valve stem out of the stem adaptor (key 60).

cap screw (key 64). If the only further maintenance is to replace the diaphragm parts or change the control spring (key 1), skip to step 8.

4. To replace the lever assembly (key 9), remove the machine screws (key 11) and lever pin (key 10).

7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the lever pin (key 10) and machine screws (key 11). 8. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), and diaphragm (key 5) on the pusher post (key 8) and attach with the diaphragm plate cap screw (key 64). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 9. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 10. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22) to fingertightness only. 11. 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) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22) to 55 to 75 inch-pounds (6 to 8 N •m) of torque. Then finish turning the adjusting screw (key 2) to the desired outlet pressure setting. 12. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

Type Y611AK or Y611AKP Vacuum Breaker or Relief Valve Key numbers are referenced in figure 8. 1. Remove the adjusting screw cap (key 62), loosen the adjusting screw nut, and turn the adjusting screw (key 2) counterclockwise until all compression is removed from the control spring (key 1). 2. Remove the spring case cap screws (key 21) and hex nuts (key 22) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10. 3. Remove the diaphragm (key 5) and attached parts by tilting it so that the pusher post (key 8) slips off the lever assembly (key 9). To separate the diaphragm (key 5) from the attached parts, unscrew the diaphragm plate

5. To replace the valve stem (key 13) or stem seal O-ring (key 46) pull the valve stem out of the stem adaptor (key 60). 6. Grease the replacement stem seal O-ring (key 46) with a good grade of elastomer lubricant and install on the valve stem (key 13). Install the valve stem by pushing it into the stem adaptor (key 60). 7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the lever pin (key 10) and machine screws (key 11). 8. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), and diaphragm (key 5) on the pusher post (key 8) and attach with the diaphragm plate cap screw (key 64). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 9. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 10. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22) to fingertightness only. 11. Turn the adjusting screw (key 2) clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm assembly (key 5B). Using a crisscross pattern, finish tightening the cap screws (key 21) and hex nuts (key 22) to 55 to 75 inch-pounds (6 to 8 N•m) of torque. Then finish turning the adjusting screw (key 2) to the desired outlet pressure setting. 12. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

Type Y612 Vacuum Regulator Key numbers are referenced in figure 9. 1. Remove the closing cap (key 3) and turn the adjusting nut (key 18) counterclockwise until all compression is removed from the control spring (key 1). 2. Remove the spring case cap screws (key 21) and hex nuts (key 22, not shown) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10.

Y610, Y611, & Y612 Series

3. Remove the diaphragm (key 5) and attached parts by tilting it so that the pusher post (key 8) slips off the lever assembly (key 9). To separate the diaphragm (key 5) from the attached parts, unscrew the diaphragm nut (key 37). If the only further maintenance is to replace the diaphragm parts or change the control spring (key 1), skip to step 8.

4. To replace the lever assembly (key 9), remove the machine screws (key 11).

4. To replace the lever assembly (key 9), remove the machine screws (key 11) and lever pin (key 10).

5. To replace the valve stem (key 13) pull it out of the diaphragm case assembly (key 20) and install a new valve stem by pushing it into the diaphragm case assembly.

5. To replace the valve stem (key 13) or stem seal O-ring (key 46) pull the valve stem out of the stem adaptor (key 60).

6. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the machine screws (key 11). 7. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), diaphragm (key 5), and small diaphragm plate (key 6) on the pusher post (key 8) and attach with the diaphragm nut (key 37). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 8. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 9. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22, not shown) to fingertightness only. 10. Install the upper spring seat (key 12) and the adjusting nut (key 18) turning clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm (key 5) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22, not shown) to 55 to 75 inch-pounds (6 to 8 N•m) of torque. Then finish turning the adjusting nut (key 18) to the desired outlet pressure setting.

6. Grease the replacement stem seal O-ring (key 46) with a good grade of elastomer lubricant and install on the valve stem (key 13). Install the valve stem by pushing it into the stem adaptor (key 60). 7. Install the lever assembly (key 9) into the valve stem (key 13) and secure the lever assembly (key 9) with the lever pin (key 10) and machine screws (key 11). 8. Install the small diaphragm plate gasket (key 7), diaphragm plate (key 24), and diaphragm (key 5) on the pusher post (key 8) and attach with the diaphragm nut (key 37). Tighten using 30 to 45 foot-pounds (41 to 61 N•m) of torque. 9. Install the pusher post (key 8) plus attached diaphragm parts onto the lever assembly (key 9). 10. Install the spring case assembly (key 23) and control spring (key 1) on the diaphragm case assembly (key 20) so that the vent assembly (key 65, not shown) is correctly oriented, and secure them with the spring case cap screws (key 21) and hex nuts (key 22) to fingertightness only.

11. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

11. Turn the adjusting nut (key 18) clockwise until there is enough control spring (key 1) force to provide proper slack to the diaphragm (key 5) and attached parts. Using a crisscross pattern, finish tightening the spring case cap screws (key 21) and hex nuts (key 22) to 55 to 75 inch-pounds (6 to 8 N •m) of torque. Then finish turning the adjusting nut (key 18) to the desired outlet pressure setting.

Type Y612A or Y612AP Vacuum Regulator

12. Install a replacement closing cap gasket (key 35) if necessary, and then install the closing cap (key 3).

Key numbers are referenced in figure 10. 1. Remove the closing cap (key 3) and turn the adjusting nut (key 18) counterclockwise until all compression is removed from the control spring (key 1). 2. Remove the spring case cap screws (key 21) and hex nuts (key 22) and lift off the spring case assembly (key 23). If the only further maintenance is to change the control spring (key 1), skip to step 10.

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 closing cap (key 3) or nameplate (key 48). Specify the eleven-character part number when ordering new parts from the following parts list.

Y610, Y611, & Y612 Series

Parts List (figures 4 through 10) Key 1 2

Description

Part Number

Control Spring, steel See following table Adjusting Screw (not for Type Y610, Y610A, Y610AP, Y612, Y612A, or Y612AP) Type Y611, Y611C, Y611P, or Y611RR, zinc 1B5379 44012 Type Y611A or Y611AP, aluminum 1L9286 08012 Type Y611AK or Y611AKP, brass 1B2120 28982 Closing Cap Type Y610, Y611P, or Y612, zinc 1B5416 44012 Type Y610A, Y610AP, Y611A, Y611AP, Y612A, or Y612AP, aluminum 1L9283 08012 Type Y611, Y611C, or Y611RR, aluminum T11069 X0012 Type Y611AK or Y611AKP, brass 1N2114 14012 Control Spring Seat (not for Type Y610, Y611AK,Y611AKP, or Y612) Type Y610A, Y610AP, Y612A, or Y612AP, cast iron 1U2260 19012 Type Y611, Y611C, Y611P, or 611RR, zinc pl steel 1B6363 25062 Type Y611A or Y611AP, zinc 0X0147 44012 Diaphragm, nitrile Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 1C9430 02072 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP 1K6496 02052 Small Diaphragm Plate (not for Type Y611, Y611C, Y611P, or Y611RR w/ brass trim or Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP) Type Y610 or Y612, pl steel 0V0039 25072 Type Y611, Y611C, Y611P, or Y611RR w/stainless trim, 316 stainless steel 0V0039 35032 Small Diaphragm Plate Gasket (not for Type Y611, Y611C, Y611P, or Y611RR w/brass trim or Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP) Type Y611, Y611C, Y611P, or Y611RR w/stainless trim, or Type Y610 or Y612, composition 1A3487 04022 Type Y610A, Y610AP, Y611A, Y611AP, Y611AK, or Y611AKP, nitrile 1L1434 03022

*Recommended spare part.

31A1729-B

Figure 4. Type Y610 Vacuum Breaker Key 8

Description

Part Number

Pusher Post Type Y610 or Y612 For brass trim, brass 1A2016 For stainless trim, 316 stainless steel 1A2016 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, aluminum 1L1433 Type Y611, Y611C, Y611P, or Y611RR For brass trim, zinc 1A7966 For stainless trim, 316 stainless steel 0V0038

Key 11

14012 35072 12

11992

44022 35072

Lever Assembly, pl steel Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 For brass trim, brass 1B5375 000A2 For stainless trim, 316 stainless steel 1B5375 000B2 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, aluminum 1H9740 28992 Lever Pin (not for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612), stainless steel 1H9729 35032 Machine Screw (2 reqâ&#x20AC;&#x2122;d) Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 For brass trim, pl steel 1A3319 28982 For stainless trim, stainless steel 1A8664 35042

15*

16*

Description

Part Number

Machine Screw (Continued) Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, pl steel 1B4204 28982 Control Spring Seat See following table Lever Stem Type Y610 Brass 1A8327 14012 Stainless steel 1A8327 35032 Type Y610A, aluminum 1H9748 000A2 Type Y610AP, aluminum 1L1426 000A2 Type Y611, Y611C, Y611RR, or Y612 Brass 1A1727 14012 Stainless steel 1A1727 35032 Type Y611P Brass 1E3782 14012 Stainless steel 1E3782 X0012 Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, aluminum 1L2212 000A2 Cotter Pin (for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 only) For brass trim, brass 1A4040 18992 For stainless trim, stainless steel 1A8665 37022 Diaphragm Case O-Ring (not for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612), nitrile 1F3581 06992 Body Gasket (for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 only), composition 1A8325 04032

Y610, Y611, & Y612 Series

51A1731-A B2048

Figure 5. Type Y610AP Vacuum Breaker

Key 17

Description

Part Number

Split Ring (for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 only), Cd pl steel 1A8326 48722 Adjusting Nut (for Type Y610, Y610A, Y610AP, Y612, Y612A, or Y612AP only), brass 1A2019 14012 Union Nut (for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 only), malleable iron 1E4711 19062 Diaphragm Case Assembly (includes union ring 20D) Type Y610, Y611, or Y612 Cast iron 3D4166 X0022 Steel 30B2578 X032 Stainless steel 30B2578 X042 Type Y610A, Y611A, Y611AK, or Y612A, 1H9751 X0012 aluminum Type Y610AP, Y611AP, Y611AKP, or Y612AP, 1H9751 X0022 aluminum

Key 20

20D

Description

Part Number

Diaphragm Case Assembly (Continued) Type Y611C or Y611P Cast iron 3E3700 000A2 Steel 30B2895 X032 Stainless steel 30B3895 X042 Type Y611RR, cast iron 21A7491 X062 Union Ring, aluminum Type Y610A, Y610AP, Y611A, Y611AK, Y611AP, Y611AKP, Y612A, & Y612AP 2H9734 08022 Spring Case Cap Screw, pl steel Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 (8 req’d) 1A3508 24052 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP (12 req’d) 1B1363 24052

Key 22

Description

Part Number

Hex Nut, Cd pl steel Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 (not shown— 8 req’d) 1E9853 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP (12 req’d) 1A3093 Spring Case Assembly Type Y610 or Y612, cast iron 1B6894 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612, or Y612AP, aluminum 4L1423 Type Y611, Y611C, Y611P, or Y611RR Cast iron 1B6365 Steel 1B6365 Stainless steel 1B6365 Type Y611, pressure loaded 2B6369

24142

24122

X0022

08032

X0342 X0352 X0362 19042

Y610, Y611, & Y612 Series

Key 24 25*

26*

27*

Description

Part Number

Diaphragm Plate See following table Disk Assembly (not used w/Type Y610A or Y610AP) Type Y610 Brass disk holder & nitrile disk 1A8328 000G2 Stainless steel disk holder & nitrile disk 1A8328 X0042 Type Y611, Y611C, Y611P, Y611RR, or Y612 Brass disk holder & nitrile disk 1A8470 000A2 Stainless steel disk holder & nitrile disk 1A8470 000C2 Stainless steel disk holder & fluoroelastomer disk 1A8470 X0052 Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, aluminum disk holder & nitrile disk 1H9739 000A2 Disk Assembly Gasket (for Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), composition 1F8268 04022 Seat Ring Type Y610 w/1/4-inch (6.4 mm) port diameter Brass 1B8151 14012 Stainless steel 1B8151 35032 Type Y610 or Y610A w/1-3/16 inch (30.2 mm) port diameter, aluminum 1L2208 09022 Type Y611, Y611C, Y611P, Y611RR, or Y612 5/16-inch (7.9 mm) port diameter Brass 1B9569 14012 Stainless steel 1B9569 35032 3/8-inch (9.5 mm) port diameter Brass 0L0831 14012 Stainless steel 0L0831 35032 7/16-inch (11.1 mm) port diameter Brass 0L0832 14012 Stainless steel 0L0832 35032 Type Y611A, Y611AK, Y611AKP, or Y611AP w/1-3/16 inch (30.2 mm) port diameter, aluminum 1H9808 09022 Type Y612A or Y612AP, aluminum 5/8-inch (15.9 mm) port diameter 1H9805 09022 1-inch (25.4 mm) port diameter 1H9807 09022 1-3/16 inch (30.2 mm) port diameter 1H9808 09022 Body Type Y610, cast iron 3/4 X 3/4-inch NPT screwed 1D2911 19012 3/4 x 1-inch NPT screwed 1D2914 19012 1 x 1-inch NPT screwed 1D2912 19012 1 x 1-1/4 inch NPT screwed 1D2915 19012 1-1/4 x 1-1/4 NPT screwed 1D2913 19012

21A1732-A A3728

Figure 6. Type Y611 Relief Valve Shown With Brass Trim Parts

Key 28

Description

Part Number

Body (Continued) Type Y610A or Y610AP Cast iron 1-1/2 x 1-1/2 inch NPT screwed 1J1903 2 x 2-inch NPT screwed 1H9749 2 x 2-inch Class 125A FF flanged 2K1842 2 x 2-inch Class 250A RF flanged 2K1845 Steel 1-1/2 x 1-1/2 inch NPT screwed 1K7879 2 x 2-inch screwed 1K7912 Type Y611, Y611C, Y611P, Y611RR, or Y612 Cast iron 3/4 x 3/4-inch NPT screwed 1D3124 1 x 1-inch NPT screwed 1D3125 1-1/4 x 1-1/4 inch NPT screwed 1D3126 Steel 3/4 x 3/4-inch NPT screwed 1E1626 1 x 1-inch NPT screwed 1K8862 Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP Cast iron 1-1/2 x 1-1/2 NPT screwed 1J1905 2 x 2-inch NPT screwed 1H9743 2 x 2-inch Class 125A FF flanged 2K1843 2 x 2-inch Class 250A RF flanged 2K1844 Steel 1-1/2 x 1-1/2 inch NPT screwed 1K7880 2 x 2-inch NPT screwed 1K7922

Key 29

19012 19012

19012 32 19012

22012 22012

35*

19012 19012 19012

22012 22012

19012 19012 19012 19012

39*

Description

Part Number

Diaphragm Case Cap Screw (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AP, Y611AKP, Y612, or Y612AP only), pl steel (2 req’d) 1H9747 24052 Seat O-Ring Holder (for Type Y610A or Y610AP only), aluminum 1L1549 09012 Seat O-Ring Washer (for Type Y610A or Y610AP only), aluminum 1L2194 09012 Closing Cap Gasket, neoprene Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 1P7533 06992 Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP 1N4462 06992 Reset Stem (for Type Y611P w/stainless trim only— not shown) 0V0773 24162 Diaphragm Nut (for Type Y610, Y610A, Y610AP, Y611P, Y612, Y612A, or Y612AP only), Cd pl steel 1A4997 24122 Body Cap Assembly (not for Type Y610, Y610A, or Y610AP) Type Y611, Y611C, Y611P, Y611RR, or Y612 For brass trim, zinc/brass 1D2722 000A2 For stainless trim, steel 0K0771 000A2 Type Y611A, Y611AK, Y611AP, Y611AKP, Y612A, or Y612AP, aluminum 1R2361 09022 Seat O-Ring (for Type Y610A or Y610AP only), nitrile1F2692 06992

22012 22012

*Recommended spare part.

Y610, Y611, & Y612 Series

51A1735-A B2047

Figure 7. Type Y611AP Vacuum Breaker / Relief Valve

Key 40

Description

Part Number

Disk Stem (not for Type Y610, Y610A, or Y610AP) Type Y611, Y611C, Y611P, Y611RR, or Y612 Cr pl brass 0K0770 14012 Stainless steel 0K0770 35032 Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP, aluminum 1H9735 09082 Disk Spring (not for Type Y610, Y610A, or Y610AP) Type Y611, Y611C, Y611P, or Y611RR, stainless steel 1A8661 37022 Type Y612 WC vacuum, stainless steel 1A8661 37022 Hg vacuum, Cd pl steel 0Z0639 27012 Type Y611A, Y611AP, Y612A, or Y612AP, stainless steel 1L3038 37022 Type Y611AK, stainless steel 2 to 3-1/2 psi 1L3038 37022 4 to 7 psi 1N4601 X0012

Key 42

46*

Description

Part Number

Disk Screw (for Type Y611, Y611C, Y611P, Y611RR, or Y612 only) For brass trim, pl steel 1A3461 28982 For stainless trim, stainless steel 1A8662 35042 Disk Spacer (for Type Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), aluminum 1H9736 09012 Disk Assembly Cap Screw (for Type Y610A or Y610AP only), pl steel 1E7603 24052 Seal Washer (for Type Y610A or Y610AP only), pl steel 1F9904 28982 Stem Seal O-Ring (for Type Y610AP, Y611AKP, Y611AP, Y611P, or Y612AP only), nitrile 1E2163 06992

*Recommended spare part.

Key 48

Description

Part Number

Nameplate (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), aluminum 11A5497 X012 Flapper Stem (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612, or Y612AP only), stainless steel 1H9763 35022 Inlet Flapper (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), nylon 1H9764 06992 Escape Flapper (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), nylon 1H9765 06992 Flapper Seat (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), stainless steel 1H9766 36012

Y610, Y611, & Y612 Series

51A1739-A B2046

Figure 8. Type Y611AKP Vacuum Breaker

Key 54

Description

Part Number

Flapper Screw (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), pl steel (3 req’d) 1H9767 28982 Flapper Spring (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only, stainless steel (2 req’d) 1H9768 37022 Screen (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), 1E5648 43122 Monel(1) Snap Ring (for Type Y610A, Y610AP, Y611A, Y611AK, Y611AKP, Y611AP, Y612A, or Y612AP only), stainless steel 1E5649 37022

Key 58

59*

Description

Part Number

Retaining Ring (for Type Y610AP, Y611AP, Y611AKP, or Y612AP only), stainless steel 1L1428 38992 Stem Adaptor O-Ring (for Type Y610AP, Y611AP, Y611AKP or Y612AP only, nitrile 1L1429 06992 Stem Adaptor (for Type Y610AP, Y611AP, Y611AKP, or Y612AP only), aluminum (not shown) 1L1431 09012 Adjusting Screw Nut (for Type Y611AK or Y611AKP only), Cd pl steel 1A3524 24122 Adjusting Screw Cap (for Type Y611AK or Y611AKP only), brass 1N2115 14102 Reset Stem O-Ring (for Type Y611P only), nitrile (not shown) 1D2899 06992

Key

Description

Part Number

Diaphragm Plate Cap Screw, pl steel See following table

Vent Assembly (for Type Y610, Y611, Y611C, Y611P, Y611RR, or Y612 only—not shown), plastic Type Y602-11 for up-pointing spring case 17A5515 X012 Type Y602-1 for down-pointing spring case 17A6570 X012 Diaphragm Stem (for Type Y610A, Y610AP, Y612A, or Y612AP only), brass 1A6263 14012 3/4-Inch Deep Socket Wrench (for Type Y610 or Y612 only when specified), pl steel 1M5911 X0012

*Recommended spare part. 1. Trademark of International Nickel Co.

Y610, Y611, & Y612 Series

21A1736-B A3727

Figure 9. Type Y612 Vacuum Regulator

51A1737-A B2045

Figure 10. Type Y612A Vacuum Regulator

Y610, Y611, & Y612 Series

Key Key Key Key

1 Control Spring, steel 12 Control Spring Seat, steel 24 Diaphragm Plate, steel 64 Diaphragm Plate Cap Screw, pl steel

TYPE NUMBER

KEY 1(1) Color Code

Part Number

KEY 12

KEY 24

KEY 64

Part Number

Qty Req'd

Part Number

1 1 1 1 1

---

Cadmium Cadmium Cadmium Dark Green Yellow

0N0394 27222 0N0860 27022 0N0861 27022 0N0220 27022 0N0043 27022

1A2018 24092

004082 25062 004082 25062 0Y0367 25062 0Y0367 25062 0Y0367 25062

Y610A, Y610AP

Brown Cadmium Purple Gray Cadmium Black

1D8925 27022 1D7654 000A2 0B0197 000A2 1B7666 27062 1B8833 27022 1A6306 27022

1A8695 24092 1A8695 24092 1A8695 24092 1A8695 24092 1A6264 24092 1A6264 24092

0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 1A3478 25022

2 2 2 2 2 2

---

Y611, Y611C, Y611P, Y611RR

Red Cadmium Purple Brown Yellow Light Green Light Blue Black

1B6538 27052 1B6539 27022 1D8030 27052 1B8387 27052 1B5370 27052 1B5371 27022 1B5372 27022 1B5373 27052

---

004082 25062 004082 25062 004082 25062 004082 25062 004082 25062 0Y0367 25062 0Y0367 25062 0Y0367 25062

1 1 1 1 1 1 1 1

1A3090 24052

Y611A, Y611AP

Brown Red Black Gray Dark Green Dark Blue Orange

1D8925 27022 1D8926 27022 1D8927 27012 1D8932 27032 1D8933 27032 1H9758 27032 1H9759 27032

---

0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 1A3478 25022 1A3478 25022

2 2 2 2 2 2 2

1C4732 24052 1C4732 24052 1C4732 24052 1C4732 24052 1C4732 24052 1A6678 24052 1A6678 24052

Y611AK, Y611AKP

Green Stripe Cadmium

0Y0664 27022 1H8024 000A2

1H7974 14012

1A3478 25022 1A3478 25022

1 1

1K4278 28982

Y612

Cadmium Cadmium Cadmium Dark Green Yellow Blue

0N0394 27222 0N0860 27022 0N0861 27022 0N0220 27022 0N0043 27022 1D1418 27012

1A2018 24092

004082 25062 004082 25062 0Y0367 25062 0Y0367 25062 0Y0367 25062 0Y0367 25062

1 1 1 1 1 1

---

Brown Cadmium Purple Gray Cadmium Balck

1D8925 27022 1D7654 000A2 0B0197 000A2 1B7666 27062 1B8833 27022 1A6306 27022

1A8695 24092 1A8695 24092 1A8695 24092 1A8695 24092 1A6264 24092 1A6264 24092

0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 0B0066 28982 1A3478 25022

2 2 2 2 2 2

---

Y610

Y612A, Y612AP

1. See tables 2 through 6 for spring ranges.

Y610, Y611, & Y612 Series

June 1994 Errata Sheet for Type Y610, Y611, & Y612 Series Vacuum Service Equipment and Relief Valves Instruction Manual, Form 1477, July 1986

WARNING

The maximum allowable inlet (body) pressure for the Types Y610A & Y610AP (Table 2 on page 3) is listed incorrectly. The correct inlet pressure is 13 Psig (0.88 Bar). Change the 150 Psig (10 Bar) in Table 2 to 13 Psig (0.88 Bar) in your copy of the instruction manual.

Table 2. Type Y610,Y610A, and Y610AP Vacuum Breaker Pressure Information

TYPE NUMBER

MAXIMUM ALLOWABLE INLET (BODY) PRESSURE Psig

Y610

Y610A, Y610AP

150

Bar

0.88

MAXIMUM EMERGENCY OUTLET (CASING) PRESSURE (POSITIVE) Psig

Bar

0.83

1.0

OUTLET PRESSURE RANGE, VACUUM

With Spring Case Above Diaphragm 0 to 2.7 Inches WC (0 to 6.7 mbar) 0 to 1-1/2 Inches Hg (0 to 51 mbar) 0 to 3-1/4 Inches Hg (0 to 110 mbar) 0 to 5-1/2 Inches Hg (0 to 186 mbar) 0 to 9.6 Inches Hg (0 to 325 mbar) 0 to 3 Inches WC (2.5 to 7 mbar) 1-1/2 to 5 Inches WC (3 to 12 mbar) 3 to 8 Inches WC (7 to 20 mbar) 8 to 16 Inches WC (20 to 40 mbar) 16 to 32 Inches WC (40 to 80 mbar) 1/4 to 3 psig (17 to 207 mbar

MAXIMUM ALLOWABLE VACUUM

Psig

Bar

5.1

0.35

5.7

CHANGE IN OUTLET (CONTROLLED) CONTROL SPRING PRESSURE REQUIRED TO FULLY OPEN COLOR VACUUM BREAKER CODE(1) Psig

mbar

Cadmium

0.023

1.6

0.39

Cadmium

0.161

11.1

6.5

0.45

Cadmium

0.357

7.4

0.51

Dark Green

0.511

9.2

0.63

Yellow

1.190

5.1

0.35

Brown

0.043

3.0

5.2

0.36

Cadmium

0.078

5.4

5.3

0.37

Purple

0.143

9.9

5.6

0.39

Gray

0.181

6.1

0.42

Cadmium

0.378

8.0

0.55

Black

1.944

134

1. Control spring part numbers are given in the parts list.

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 further information, write: P.O. Box 190, Marshalltown, Iowa 50158, U.S.A. Medway House, Knight Road Strood, ROCHESTER, Kent, England ME2 2EZ Printed in USA