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ANDERSON GREENWOOD TYPE 91 AND 94 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
8 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. For marine
service the bolts in the main valve and pilot exposed to the environment should be replaced during
routine maintenance or at least every five years.
Kit base number: 04-4744-XXX
MAIN VALVE
Kit type
Material
Soft goods
PTFE
Bolt
SST
TYPE 91 PILOT
(Complete kit consists of diaphragm plus soft goods)
Kit type
Material
Soft goods
91 Marine
91 Standard
Bolt
Marine
3. PTFE sense diaphragm. SST boost and spindle diaphragms
4. Hastelloy
sense, PTFE boost, and SST spindle diaphragm
®
TYPE 94 PILOT
(Complete kit consists of diaphragm plus soft goods)
Kit type
Material
Soft goods
NBR
FKM
EPR
NBR
[6]
FKM
[6]
EPR
[6]
Bolt
SST
6. PTFE diaphragms
BACKFLOW PREVENTER CHECK VALVE
Kit
Type
Soft goods
Diaphragm
Ball
Bolt
Diaphragm
ANGMC-6025-EN © 2014, 2021 Emerson Electric Co. All rights reserved 06/21. Anderson Greenwood is a mark owned by one of the companies in the Emerson
Automation Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property
of their prospective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by
our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without
notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of
any Emerson Electric Co. product remains solely with the purchaser.
Emerson.com/FinalControl
2 x 3
3 x 4
4 x 6
6 x 8
-120
-121
-122
-123
-337
-338
-339
-340
Low pressure below 15 psig (103 kpag)
Vacuum
Pressure
-001
-002
[3]
-004
-005
-336
-336
Low pressure below 15 psig (103 kpag)
Vacuum
Pressure
-010
-011
-013
-014
-016
-017
-019
-020
-021
-022
-023
-024
-342
-342
Type material
PTFE
NBR
FKM
EPR
Kalrez
SST
8 x 10
10 x 12 12 x 16
-124
-125
-126
-341
-341
-341
Medium
-003
[3]
[4]
-003
[4]
-334
Medium
-012
-015
-018
-896
-897
-898
-343
All pressures
-781
-344
-345
-346
-782
-335
12
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