Anderson Greenwood Type 83 Spring Operated Safety Relief Valves, Anderson Greenwood-EN Manuals & Guides

ANDERSON GREENWOOD TYPE 83 SPRING OPERATED SAFETY RELIEF VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Before installation these instructions must be fully read and understood

Maintenance instructions for Type 83 Spring
Operated Safety Relief Valves with O-ring seat
(SOPRV).
The intent of these instructions is to acquaint
the user with the maintenance of this product.
Please read these instructions carefully.

WARNING

An attempt to 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.

1 GENERAL

The Anderson Greenwood Type 83 Relief Valve
is a direct acting spring loaded valve for gas
service and uses O-ring seats and seals.
The intent of these instructions is to acquaint
the user with the maintenance of this product.
Please read these instructions carefully. This
product should only be used in accordance
with the applicable operating instructions and
within the application specifications of the
original purchase order. The installation and
Operational Safety Instructions (available at
Emerson.com/FinalControl) should be fully
read and understood before returning this
product to service after maintenance.

2 VALVE REPAIR (-4, -6, -8 Orifice)

Refer to Figure 1

2.1 Disassembly

2.1.1 Relieve spring tension and back
blowdown adjusting screw out two turns.

2.1.2 Remove inlet bushing, bushing seal and
valve internals.

2.1.3 Separate nozzle from guide by hitting top
of spindle on soft surface.

2.2 Repair

2.2.1 Hold spindle by skirt O.D. in soft jaw vise
and replace seat.

2.2.2 Examine nozzle and polish out any
scratches or nicks. Replace if necessary.

2.3 Assembly

Assemble in reverse order of disassembly. Do
not lubricate spindle or guide. Make sure the
nozzle is fully and evenly seated in guide. This is
a press fit joint. Lubricate threads and pressure
adjustment screw tip.

2.4 Soft goods repair kit

The part numbers for soft goods repair kits are
listed below. Each kit contains the seat and
seals for all pressure ranges.

Emerson.com/FinalControl

Material

Orifice

-4 04.4805.015 04.4805.016

-6 04.4805.017 04.4805.018

-8 04.4805.019 04.4805.020

© 2017 Emerson. All Rights Reserved.

NBR FKM

Engineering Doc. #05.9040.073 Rev. G

VCIOM-06005-EN 19/03

ANDERSON GREENWOOD TYPE 83 SPRING OPERATED SAFETY RELIEF VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

FIGURE 1
Type 83 (-4, -6 and -8 orifices)

Cap

Spring washer

Spring

Guide pin

Blowdown

adjustment

screw

Seal

3 VALVE REPAIR (F, G, H and J Orifice)

Refer to Figure 2

3.1 Disassembly

3.1.1 Relieve spring tension and back
blowdown screw out two turns.

3.1.2

Remove spring bonnet and valve internals.

Note: a pipe nipple can be attached to

vent holes in top of guide to facilitate
removal (⅛" -NPT: F, G or ¼" -NPT: H, J).

3.1.3 Separate nozzle from guide by hitting top
of spindle on soft surface.

3.2 Repair

3.2.1 Hold spindle by skirt O.D. in soft jaw vise
and replace seat.

3.2.2

Examine nozzle and polish seating
surface as required. Replace if necessary.

Pressure adjustment
screw

Body

Spindle

Guide

Outlet

Nozzle

Bushing seal

Bushing

Spindle

Seat retainer screw

Seat detail

3.3 Assembly

Assemble in reverse order of disassembly.
Do not lubricate spindle or guide. Make sure
the guide plugs, if used, are flush or below
the top guide surface. Refer to table for plug
requirements. Make sure nozzle is fully and
evenly seated in guide. This is a press fit joint.
Lubricate threads and pressure adjustment
screw tip.

3.4 Soft goods repair kit

The part numbers for soft goods repair kits are
listed below. Each kit contains the seat and
seals for all pressure ranges.

Seat retainer

Seat

Orifice Set pressure (psig) Set pressure (kpag) Quantity

F Above 354 Above 2441 2
G Above 223 Above 1538 2
H Above 227 Above 1565 3
J Above 142 Above 979 3

Material

Orifice

F 04.4805.021 04.4805.022
G 04.4805.023 04.4805.024
H 04.4805.025 04.4805.026
J 04.4805.027 04.4805.028

NBR FKM

2

ANDERSON GREENWOOD TYPE 83 SPRING OPERATED SAFETY RELIEF VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

FIGURE 2
Type 83 (F, G, H and J orifices)

Cap

Pressure adjustment screw

Spring washer

Flange bolt

Guide plug

Guide

Guide pin

Seal

Blowdown

adjusting screw

Nozzle

Nozzle seal

Body

4 VALVE ADJUSTMENT

4.1 General

Two adjustments are provided on gas service
valves, one for adjusting the opening pressure
and one for adjusting the closing pressure.

4.2 Set pressure

Turn spring adjustment screw on bonnet in most
of the way. Increase pressure to desired level
and back out screw until valve pops. Lock screw
with jam nut and retest. Readjust as required.

Seal

Bonnet

Spring

Bonnet retainer ring

Bonnet flange

Bonnet seal

Seat retainer

Outlet

Seat detail

4.3 Reseat pressure

To adjust blowdown, turn screw IN to shorten
blowdown; OUT to increase blowdown.

NOTE

If volume of test set up is too small, blowdown will be
set too short even though pressure gauge indicates it
to be correct. Referto Section 4.5.

Seat

Seat retainer
screw

4.4 Adjustments tolerances

Set pressure range (psig) Set pressure range (kpag) Valve operating characteristic Tolerance*

Above 70 Above 483 Set pressure ± 3%
70 and below 483 and below Set pressure
100 and above 689 and above Cracking pressure 95%
50 to 99 345 to 683 Cracking pressure 90%
Below 50 Below 345 Cracking pressure 85%
100 and above 689 and above Reseat pressure 93%
50 to 99 345 to 683 Reseat pressure 90%
Below 50 Below 345 Reseat pressure 80%
* Percent tolerance is of specified set pressure

± 2 psi (± 13.8kpa)

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ANDERSON GREENWOOD TYPE 83 SPRING OPERATED SAFETY RELIEF VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

4.5 Adjusting equipment

Where practical, valves should be set using
an accumulator large enough to accurately
read and set blowdown. For a -4 orifice up
to 4000psig, -6 orifice up to 1411 psig and
a -8 orifice up to 600 psig, a four cubic foot
accumulator is recommended. The supply pipe
to the valve should be the same size as the inlet
or larger and not more than 10” long.

For all other valves, or if an accumulator is not
available for the sizes listed above, the blowdown
may be set using the following method.

Turn the blowdown adjusting bolt all the way in
until it just touches the guide, then turn it out
the number of turns listed in the table.

5 SEAT LEAKAGE

If the valve leaks after repair check the
following:

1. Full and even seating of nozzle and guide.

2. Foreign particles trapped between the seat

and nozzle. If any are found they may have
damaged the seat, making it necessary to
replace it.

3. Correct seat hardness for the valve set

pressure.

BLOWDOWN ADJUSTMENT

Orifice Turns out of blowdownscrew Set pressure range (psig) Set pressure range (kpag)

-4 1 20-4000 138-27579
1½ Above 4000 Above 27579

-6 ¾ 20-1410 138-9722
1¼ Above 1410 Above 9722

-8 1½ 20-600 138-4137
2½ Above 600 Above 4137

-F 1 20-700 138-4826
1½ Above 700 Above 4826

-G 1¾ 20-700 138-4826
2¼ Above 700 Above 4826

-H and -J ¾ 20-700 138-4826
1½ Above 700 Above 4826

6 SET PRESSURE CHANGE

If the set pressure is changed more than + 5%
from the nameplate set pressure, the spring,
spring washers, spring bonnet, guide plugs and
seat may also have to be changed. Consult the
factory or refer to the soft goods repair kit, the
table in section 3.3 and spring chart 03.0079.

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Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Anderson Greenwood is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation
Solutions, Emerson andthe Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective 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.

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