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ANDERSON GREENWOOD SERIES 96A VACUUM BREAKER
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be fully read and understood.
TABLE OF CONTENTS
1. General ........................................................... 2
2. General description and operation .............. 2
3. Storage and handling .................................... 2
4. Installation ..................................................... 2
5. Inlet piping ..................................................... 3
6. Discharge piping............................................ 3
7. Vacuum breaker repair ................................. 3
9. Soft goods repair kit ...................................... 4
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.
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.
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∙ 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.
WARNING
If a gagging device is provided with the valve it must
be removed before the valve is put into service.
• Removal of the seal wires in an attempt to adjust
and/or repair this product by unauthorized or
unqualified persons voids the product warranty
and may cause damage to equipment and
serious injury or death to persons.
• This product is a safety related component
intended for use in critical applications.
The improper application, installation or
maintenance of the valve or the use of parts or
components not manufactured by Emerson may
result in a failure of the valve.
• Any obstruction due to polymerization,
solidification or solid deposit will affect
the safety performance of this valve. Methods to
reduce such risk should be taken.
• A vacuum breaker should be used only to
protect a system from underpressure during a
vacuum upset. It should not be used as a control
valve that is required to operate continuously
or as a block valve to isolate portions of the
system. It should not be used as a pipe fitting or
transition piece in a piping system.
∙ 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.
© 2017 Emerson. All Rights Reserved.
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, 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.
∙ The information, specifications and technical
data (the "Specifications") contained in this
document are subject to change without
notice. Emerson does not warrant that the
Specifications are current and assumes no
responsibility for the use or misuse thereof.
The purchaser should verify that there have been
no changes to the Specifications prior to use.
Service technicians are available to assist
with your installation or other field problems.
Call your nearest Emerson representative.
Engineering Doc. #05.9040.084 Rev. L
VCIOM-06027-EN 21/02
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Summary of Contents for Emerson ANDERSON GREENWOOD 96A Series
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Page 1: Table Of Contents
Specifications prior to use. ∙ Never attempt to remove the safety valve from ∙ All Emerson safety valves should be kept in a system that is pressurized. proper working condition in accordance with the Service technicians are available to assist ∙... -
Page 2: General
These valves have been tested and adjusted at the valve connections absolutely clean. It is the factory. Contact the factory or a Emerson recommended that the valve be stored indoors for the specific flanges. The inside diameters... -
Page 3: Inlet Piping
ANDERSON GREENWOOD SERIES 96A VACUUM BREAKER INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 5 INLET PIPING 7 VACUUM BREAKER REPAIR (See Figure 2) 7.2 Repair and assembly 7.2.1 Clean all metal parts. Any particles of 7.1 Disassembly No inlet piping is required. The 96A vacuum elastomer adhering to the metal parts breaker is a weighted pallet vent designed to 7.1.0 Remove the retainer ring bolts, retainer... -
Page 4: Leak And Vacuum Set Verification Testing
ANDERSON GREENWOOD SERIES 96A VACUUM BREAKER INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 9 SOFT GOODS REPAIR KIT 7.2.4 For non-lox clean valves, cement new 7.2.5 Install new O-ring seat into seat ring sponge seat to seat ring using Resiweld following the sequence depicted in Figure 3. Adhesive #7004, manufactured by H. B. - Page 5 ANDERSON GREENWOOD SERIES 96A VACUUM BREAKER INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS FIGURE 2 ø.249 - .269 (ø6.32 - 6.83 mm) Cross drill hole Relief valve connection, 150 # FFSF ø.280 - .288 (ø7.11 - 7.32 mm) Cross drill hole See detail A See detail B ½...
- Page 6 VCIOM-06027-EN © 2013, 2021 Emerson Electric Co. All rights reserved 02/21. 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.