Emerson Anderson Greenwood 95 Series Installation And Maintenance Instructions Manual

Pilot operated safety relief valves

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Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS
InstallatIon and MaIntenance InstructIons
Before installation these instructions must be fully read and understood
installation and Maintenance instructions for
anderson Greenwood Series 95 Pilot operated
Safety relief Valves (PoSrV).
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 pressure relief valve is under pressure
never place any part of your body near the pilot
exhaust nor the outlet of the main valve.
The main valve outlet should be piped or vented to
a safe location.
Always wear proper safety gear to protect head,
eyes, ears, etc. anytime you are near pressurized
valves.
Never attempt to remove the pressure relief valve
from a system that is pressurized.
Never make adjustments to or perform
maintenance on the pressure relief valve while
in service unless the valve is isolated from the
system pressure. If not properly isolated from the
system pressure, the pressure relief valve may
inadvertently open resulting in serious injury.
Remove the pressure relief valve prior to
performing any pressure testing of the system.
Emerson.com/FinalControl
The safety of lives and property often depends
on the proper operation of the pressure relief
valve. The valve must be maintained according to
appropriate instructions and must be periodically
tested and reconditioned to ensure correct function.
wArninG
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.
The product is a safety related component
intended for use in critical applications. The
improper application, installation or maintenance
of the product or the use of parts or components
not manufactured by Anderson Greenwood may
result in a failure of the product.
Any installation, maintenance, adjustment, test,
etc. performed on the Product must be done
in accordance with the requirements of all
applicable Anderson Greenwood Procedures and
Instructions as well as applicable National and
International Codes and Standards.
storAGe And hAndlinG
Pressure relief valve performance may be
adversely affected if the valve is stored for an
extended period without proper protection.
rough handling and dirt may damage, deform,
or cause misalignment of valve parts and may
alter the pressure setting and adversely affect
valve performance and seat tightness. it is
recommended that the valve be stored in the
original shipping container in a warehouse
or as a minimum on a dry surface with a
protective covering until installation. inlet and
outlet protectors should remain in place until
the valve is ready to be installed in the system.
© 2017 Emerson. All rights reserved.
engineering doc. #05.9040.083 rev. e
VcioM-06026-us 14/12

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Summary of Contents for Emerson Anderson Greenwood 95 Series

  • Page 1 Remove the pressure relief valve prior to performing any pressure testing of the system. engineering doc. #05.9040.083 rev. e VcioM-06026-us 14/12 © 2017 Emerson. All rights reserved. Emerson.com/FinalControl...
  • Page 2 Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons 1 GenerAl VAlVe description fiGure 1 Refer to Figure 1 the anderson Greenwood Series 95 Valve auxiliary setting device consists of a main valve and pilot. the main valve has an unbalanced piston with o-ring seat.
  • Page 3: Accessory Maintenance

    Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons item description fiGure 2 auxiliary setting device Supply tubing Pilot exhaust tubing Pilot bracket bolt Pilot Pipe nipple field test hand valve field test plug Connector Check valve Connector Connector Close tee...
  • Page 4: Main Valve Maintenance

    Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons item description fiGure 3 lower bracket upper bracket Bracket bolt Washer Hex nut Body Screw Piston Seat retainer Washer (used on 6 x 8 only) Cap/liner Bolt Nozzle Washer 560 *...
  • Page 5: Pilot Maintenance

    Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons 4 pilot MAintenAnce for fiGures 4A And 4B item description item description Refer to Figure 4A Body Washer shim (for stack height) anderson Greenwood recommends the pilot Nozzle Spindle diaphragm* be returned to the factory for repair or to be...
  • Page 6 Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons series 95 pilot with auxiliary setter fiGure 4a...
  • Page 7 Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons fiGure 4B...
  • Page 8: Pilot Set Pressure Adjustment

    Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons 5 pilot set pressure AdjustMent 5.3 decrease the supply pressure to the correct reseat pressure and back the Refer to Figure 5 blowdown adjustment screw out until the to adjust the opening and closing pressure of dome pressure “snaps”...
  • Page 9: Pilot Set Pressure Field Test Procedure

    Anderson Greenwood SerieS 95 Pilot oPerated Safety relief ValVeS InstallatIon and MaIntenance InstructIons 6 pilot set pressure field test 6.5 to adjust the opening pressure turn procedure the spring adjusting screw under the cap/adapter “in” to increase pressure or Refer to Figure 6 “out”...
  • Page 10: Repair Kits

    2 x 3 04.4744.810 04.4744.330 3 x 4 04.4744.804 04.4744.331 4 x 6 04.4744.834 04.4744.332 6 x 8 04.4744.835 04.4744.333 Pilot 04.4744.025 04.4744.333 Backflow preventer (diaphragm) 04.4744.781 04.4744.335 Check valve (ball check) 04.4744.782 None © 2017 Emerson. All rights reserved.

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