Anderson Greenwood
Pilot oPerated safety relief valves
Operating and Safety inStructiOnS
Before installation these instructions must be fully read and understood
service technicians are available to assist with
your installation or other field problems. Call
your nearest emerson representative.
emerson.com/FinalControl
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 safety valve should be used only to protect a
system from overpressure during a pressure
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.
• Any installation, maintenance, adjustment, repair
or test, performed on the safety valve must be
done in accordance with the requirements of all
applicable Emerson Procedures and Instructions
as well as applicable National and International
Codes and Standards.
• 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.
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
1 GenerAl
the intent of these instructions is to acquaint
the user with the storage, installation and
operation of this product.
this safety valve should only be used in
accordance with the applicable operating
instructions and within the application
specifications of the purchase order.
these valves have been tested and adjusted at
the factory. Contact the factory or a emerson
authorized representative before making any
changes to the settings.
© 2017 emerson. all rights reserved.
engineering doc. #05.9040.352 rev. B
VCosi-06034-en 18/01
tAble oF Contents
1. General ........................................................... 1
2. storage and handling .................................... 2
3. installation ..................................................... 2
4. inlet piping ..................................................... 2
5. discharge piping............................................ 2
6. remote pressure pick-up ............................. 3
7. set pressure verification testing .................. 4
periodically tested and reconditioned to ensure
correct function.
• For further information including adjustment,
maintenance, cleaning lapping and detail
illustrations obtain the appropriate Operation and
Maintenance Manual from the table on page 4.
These manuals may be requested from the factory
or are available at Emerson.com/FinalControl
