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ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood
TABLE OF CONTENTS
2. Main valve maintenance ............................... 2
3. Pilot maintenance ......................................... 6
4. Pilot set pressure adjustment ...................... 9
5. Testing complete valve assembly .............. 10
7. Soft goods repair kits .................................. 13
8. Pilot accessories ......................................... 13
9. Pilot conversion kits .................................... 13
Installation and maintenance instructions for
Anderson Greenwood Series 500 Pilot Operated
Safety Relief Valves (POSRV).
The intent of these instructions is to acquaint
the user with the installation and maintenance
of this product.
Emerson.com/FinalControl
1 GENERAL VALVE DESCRIPTION AND
START-UP
1.1 Operation
The Anderson Greenwood pilot operated
safety-relief valves utilize the principle
of pressurizing the top, or large area,
of a differential area piston with line
pressure to hold the piston closed up to set
pressure. At set pressure the pilot valve
relieves, partially evacuating the dome
(volume above piston) and the piston lifts
permitting discharge from the main valve.
When the pilot reseats, line pressure is diverted
to the dome closing the main valve.
The set pressure range is 15 to 720 psig
(1 to 51 bar).
1.2 Installation
Either or both inlet and outlet may be standard
ANSI/ASME flanges and the valve should be
installed in accordance with accepted piping
practices.
When remote pressure pick-up is used the
pilot supply tube is connected to a remote
location rather than to the inlet neck of the
valve. If a block valve for shut-off is used in the
remote pilot supply line, be sure it is opened
before pressurizing the system or opening the
isolating block valve, where installed.
NOTE
Remote pressure pick-up piping must have the
equivalent flow area of ½" (12.7 mm) tubing for
lengths up to 20 feet (6 m). For lengths greater than
20 feet (6 m), larger tubing or pipe should be used.
© 2017 Emerson. All Rights Reserved.
Engineering Doc. #05.9040.272 Rev. H
VCIOM-06022-EN 19/06
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Summary of Contents for Emerson Anderson Greenwood 500 Series
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Page 1: Table Of Contents
20 feet (6 m). For lengths greater than the user with the installation and maintenance 20 feet (6 m), larger tubing or pipe should be used. of this product. Engineering Doc. #05.9040.272 Rev. H Emerson.com/FinalControl VCIOM-06022-EN 19/06 © 2017 Emerson. All Rights Reserved. -
Page 2: Main Valve Maintenance
ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS 1.3 Startup 2 MAIN VALVE MAINTENANCE There must be pressure at the valve inlet to 2.1 Disassembly establish a differential in force across the piston and “load” it in the closed position. Remove the cap from the body. - Page 3 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS Pilot valve Field test connection Supply tube Outlet Main valve Remote sense Inlet 2.2 Main valve nozzle rework Thread nozzle retainer into body as seal is Should the main valve nozzle seating face compressed to keep nozzle retainer from become nicked or scratched such that the main binding against piston.
- Page 4 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS TABLE 1 PARTS LIST Cap bolt torque # Cap bolts Item Part name Valve size and type Spacer P/N Cap bolt thread to use ft·lb Body 1½” x ⅔” Series 546 (G and H Orifice) 06.5612.003 .500-20 UNF 30.24...
- Page 5 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS TABLE 2 Torque ft·lb Bolt size ¼ 5.16 8.85 ⅜ 15.49 24.34 ½ 33.19 43.52 ⅝ 71.54 ¾ 95.88 ⅞ 148.99 199.88 1⅛ 300.93 FIGURE 2 Cap bolt Spacer Body Liner...
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Page 6: Pilot Maintenance
ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS 3 PILOT MAINTENANCE 3.3 Pilot diaphragm assembly 3.3.1 Boost diaphragm (lower diaphragm) 3.1 Disassembly Install upper diaphragm shield on top To facilitate assembly, place all parts of lower diaphragm shield. Install boost removed in an orderly arrangement so that diaphragm (Item 55) over spindle on the correct parts can be assembled in the... - Page 7 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS PARTS LIST FIGURE 3 15 to 275 psig Item Description (1.03 to 18.96 bar) Body Nozzle Spindle Seat socket Diaphragm support Spacer ring Sense plate Boost plate Diaphragm shield, lower Bonnet Spring washer...
- Page 8 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS PARTS LIST Item Description Nozzle Spindle Seat socket Diaphragm support Sense plate Boost plate Diaphragm shield, lower Blowdown needle Blowdown bushing Inlet screen Bonnet seal Spindle seal Bushing seal Needle seal Boost plate seal...
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Page 9: Pilot Set Pressure Adjustment
ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS 4 PILOT SET PRESSURE ADJUSTMENT 4.4 Adjustment tolerances All pilots can be adjusted ± 5% beyond 4.1 General the nameplate setting for set pressures Two adjustments are provided; one for varying above 275 psig (18.96 bar) and ±... -
Page 10: Testing Complete Valve Assembly
ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS 5 TESTING COMPLETE VALVE ASSEMBLY 5.4 Main valve function check 5.1 General CAUTION The complete valve assembly should be tested This test must be performed at a slow rate of for internal and external leakage and to verify pressure increase to ensure that the main valve main valve function using a test set-up similar... -
Page 11: Pilot Set Pressure Field Test Procedure
ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS 6 PILOT SET PRESSURE FIELD TEST Alternatively, the pilot set pressure can be PROCEDURE checked in the field if the valve is equipped with a field test accessory with an actuation indicator. - Page 12 ANDERSON GREENWOOD SERIES 500 PILOT OPERATED SAFETY RELIEF VALVES INSTALLATION AND MAINTENANCE INSTRUCTIONS FIGURE 6 Indicator position “out” - valve closed “in” - valve open Indicator assembly Field test valve “B” View A - A Vent “C” Block valve “A” 6.2 Procedure A.
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Page 13: Soft Goods Repair Kits
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Anderson Greenwood is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co.