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ANDERSON GREENWOOD

 SERIES 96A VACUUM BREAKER

INSTALLATION AND MAINTENANCE INSTRUCTIONS 

Before installation these instructions must be fully read and understood

The intent of these instructions is to acquaint 
the user with the storage, installation and 
operation of this product. Please read these 
instructions carefully before installation.

WARNING

The protection and safety of equipment, property 
and personnel depends on the proper operation 
of the safety valves described in this manual. 
All Emerson safety valves should be kept in proper 
working condition in accordance with the 
manufacturer’s written instructions. Periodic 
testing and maintenance by the user of this 
equipment is essential for reliable and safe valve 
operation.
All installation, maintenance, adjustment, 
repair and testing performed on safety valves 
should be done by qualified technicians having 
the necessary skills and training adequate to 
perform such work. All applicable Codes and 
Standards, governing regulations and authorities 
should be adhered to when performing safety 
valve repair. No repair, assembly, adjustment or 
testing performed by other than Emerson or its 
authorized assemblers and representatives shall 
be covered by the warranty extended by Emerson  
to its customers. The user should use only original, 

SAFETY PRECAUTIONS

When the safety valve is under pressure never place 
any part of your body near the outlet of the valve.
The valve outlet and any separate drains should 
be piped or vented to a safe location.
Always wear proper safety gear to protect hands, 
head, eyes, ears, etc. anytime you are near 
pressurized valves.
Never attempt to remove the safety valve from 
a system that is pressurized.
Never make adjustments to or perform 
maintenance on the safety valve while in service 
unless the valve is isolated from the system 
pressure. If not properly isolated from the system 
pressure, the safety valve may inadvertently open 
resulting in serious injury.
Remove the safety valve prior to performing any 
pressure testing of the system.
The safety of lives and property often depends on 
the proper operation of the safety valve. The valve 
must be maintained according to appropriate 
instructions and must be periodically tested and 
reconditioned to ensure correct function.

VCIOM-06027-US 14/11

factory supplied OEM parts in any maintenance or 
repair activity involving this product. 
This Maintenance Manual is provided as a general 
guide for the repair and maintenance of the safety 
valves described herein. It is not possible to 
describe all configurations or variations with such 

equipment. The user is advised to contact Emerson

 

or its authorized assemblers and representatives 
for assistance in situations that are not adequately 
covered or described in this manual.
Before removing a safety valve for maintenance, 
ensure that the system pressure has been fully 
depressurized. If an isolation block valve is used 
ensure that any trapped fluid between the block 
valve and the safety valve is safely vented.
Before disassembling the safety valve ensure that 
the valve has been decontaminated from any 
harmful gasses or fluids and that it is at a safe 
temperature range for handling. Fluids can be 
trapped in the dome space of pilot operated safety 
valves.
Before installation, the Installation and Operational 
Safety Instructions should be fully read and 
understood. These Instructions may 
be requested from the factory or are available at 

www.valves.emerson.com.

Engineering Doc. #05.9040.084 Rev. L 

Emerson.com/FinalControl

© 2017 Emerson. All rights reserved.

Summary of Contents for Anderson Greenwood 96A Series

Page 1: ...s pressurized Never make adjustments to or perform maintenance on the safety valve while in service unless the valve is isolated from the system pressure If not properly isolated from the system pressure the safety valve may inadvertently open resulting in serious injury Remove the safety valve prior to performing any pressure testing of the system The safety of lives and property often depends on...

Page 2: ... guide tube assembly being careful not to damage the sealing surfaces 2 1 1 To disassemble the seat plate guide tube assembly insert a 250 6 35 mm diameter or smaller rod through the cross drilled hole in tube to prevent it from rotating while removing the lower nut Remove the nut weight if used and spacer Remove retainer and O ring from seat plate bolt The guide tube may be removed from the seat ...

Page 3: ...non lox clean valves cement new sponge seat to seat ring using Resiweld Adhesive 7004 manufactured by H B Fuller Co The adhesive is a two component epoxy base that will cure at room temperature Blending ratio by weight or volume is one to one Part A with Part B The seat ring and sponge seat should be cleaned with alcohol or other suitable solvent compatible with the elastomer before cementing Appl...

Page 4: ...eat sponge 11 Plate seat 12 Screen inlet 13 Retainer seat ring 14 Bolt retainer 15 Ring seat 16 O ring Seat plate 17 O ring Seat ring 18 Cap outlet 19 Stud 20 Nut 21 Gasket 23 Weight ring 24 Spacer 25 Retainer O ring 26 O ring 27 Eyebolt ø 249 269 ø6 32 6 83 mm Cross drill hole ø 280 288 ø7 11 7 32 mm Cross drill hole See detail B See detail A Relief valve connection 150 FFSF Tank connection oz se...

Page 5: ...ing careful that no portion of the seat is stretched All adhesive that get squeezed out should be cleaned up with no traces left on the top face of the sponge seat ANDERSON GREENWOOD SERIES 96A VACUUM BREAKER INSTALLATION AND MAINTENANCE INSTRUCTIONS 2017 Emerson All rights reserved ...

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