Emerson Anderson Greenwood 93 Series Installation And Maintenance Instructions Manual Download Page 7

Page: 7 / 8

ANDERSON GREENWOOD

SERIES 93T PILOT OPERATED SAFETY RELIEF VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

FIGURE 7

Field test valve "B"

Flexible hose

Test gage

Block valve "A"

Vent valve "C"

Nitrogen

bottle

8 SOFT GOODS REPAIR KITS

Soft goods repair kits contain all the seals and
seats to repair a valve. To order a kit, specify
the base number and select the last three
digits from the following tables. To ensure the
purchase of the correct repair kit, the order
should specify the valve model and serial
number.

Kit base number: 04.4744.XXX

MAIN VALVE

Material

2 x 3

3 x 4

4 x 6

6 x 8

8 x 10

10 x 12

12 x 16

PTFE (below 1 psi)

.083

.084

.325

.326

.327

.328

.329

PTFE (above 1 psi)

.323

.324

.325

.326

.327

.328

.329

PILOT (COMPLETE KIT CONSISTS
OF DIAPHRAGM PLUS SOFT GOODS)

Low pressure (below 15 psi)

Vacuum

Pressure

.007

.008

BACKFLOW PREVENTER CHECK VALVE

Material

All pressure

PTFE

.781

Summary of Contents for Anderson Greenwood 93 Series

Page 1: ...e and seat tightness It is recommended that the valve be stored in the original shipping container in a warehouse or as a minimum on a dry surface with a protective covering until installation Inlet and outlet protectors should remain in place until the valve is ready to be installed in the system VCIOM 03093 US 15 01 Engineering Doc 05 9040 082 Rev E 1 GENERAL VALVE DESCRIPTION AND START UP 1 1 O...

Page 2: ...eat by placing the film over the seat plate with the edges of the film extending beyond the outside diameter of the plate Place the secondary seat on the film and the retainer with those in the seat plate and press the retainer down evenly over the seat plate ridge Outlet Inlet Pilot valve Supply tube Nameplate External blowdown adjustment Main valve typical FIGURE 1 2 3 Assembly Reassemble the di...

Page 3: ...plates and spacers Remove lower case and spindle seat assembly Remove blowdown adjustment screw and supply port tube fitting 3 1 2 Clean all parts and replace all soft goods The nozzles used in these pilots can be reworked if scratched by lapping flat to a 2 microinch finish 3 2 Assembly Assembly is done in the reverse order of disassembly Lubricate all screw threads and end of spring adjusting sc...

Page 4: ...est set up similar to that shown in Figure 4 should be used 4 2 Set pressure This adjustment is obtained by turning the pressure adjusting bolt clockwise in to increase set pressure and counter clockwise out to decrease set pressure 4 3 Reseat pressure This adjustment is obtained by turning the blowdown needle adjusting screw clockwise in to increase blowdown counter clockwise out to decrease blow...

Page 5: ...pressure at set pressure Modulating action dome pressure decreases slowly to 30 5 of set pressure and recovers to 60 10 of set pressure at set pressure 2 Pilot seat should be bubble tight at dome recovery for snap pilot action and at 90 of set pressure for modulating pilot action non marine Pressure adjustment Pressure adjustment Pilot valve to be set Blowdown adjustment Adjustable pressure regula...

Page 6: ...a leak If leakage is detected remove paper and spray leak test solution around nozzle seat to locate leak Cause of leakage may be damaged nozzle seating surface or wrinkled PTFE film seat 6 3 External leak test Following the internal leak test check for external leakage by applying leak test solution to all joints and seals Tighten bolts or fittings as required 7 PILOT SET PRESSURE FIELD TEST PROC...

Page 7: ...base number and select the last three digits from the following tables To ensure the purchase of the correct repair kit the order should specify the valve model and serial number Kit base number 04 4744 XXX MAIN VALVE Material 2 x 3 3 x 4 4 x 6 6 x 8 8 x 10 10 x 12 12 x 16 PTFE below 1 psi 083 084 325 326 327 328 329 PTFE above 1 psi 323 324 325 326 327 328 329 PILOT COMPLETE KIT CONSISTS OF DIAPH...

Search results

Summary of Contents for Anderson Greenwood 93 Series

Reviews:

Brands by name

Popular brands

Emerson Anderson Greenwood 93 Series, Installation And Maintenance Instructions Manual

Search results

Summary of Contents for Anderson Greenwood 93 Series

Reviews:

Brands by name

Popular brands