Emerson ANDERSON GREENWOOD PILOT 9300 Series User manual

ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
© 2017 Emerson. All Rights Reserved.
Before installation, these instructions must be carefully read and understood.
Emerson.com
TABLE OF CONTENTS
1 Introduction.................................................. 2
2 Main valve .................................................... 3
3 Pilot maintenance...................................... 14
4 Functional testing of complete
assemblyofmain valve and pilot.............. 27
5 Storage and handling ................................ 29
6 Trouble shooting........................................ 30
7 Main valve spare parts and repair kits..... 30
8 Pilot spare parts and repair kits............... 31
9 Accessories, options, and
accessoryrepairkit ................................... 32
10 Lubricants and sealants for Series 9300.. 32
Installation and Maintenance Instructions
for Anderson Greenwood Series 9300 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.
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, factory supplied
OEM parts in any maintenance or repair activity
involving this product.
SAFETY PRECAUTIONS
When the safety valve is under pressure
neverplace any part of your body near
the outlet/exhaust 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.
VCIOM-06024-EN 22/01
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
Doc. #05.9040.275 Rev.DA
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.
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
Emerson.com/FinalControl

2
1.3 Service applicability
Refrigerated or cryogenic storage tanks
(accurate low-pressure protection), natural
gas transmission and distribution, blanketed
vessels in the petrochemical, food and
electronics industries, ammonia, air blowers in
the waste water treatment plants and marine
(LNG and LPG).
1.4 Code applicability
The Series 9300 are designed to meet
therequirements of ASME UV Code Stamp, NB
certified capacity 15 psig and above, and API 2000.
1.5 Conversion
Valve conversions are defined as any change
which affects critical parts and/or valve
nameplate data, from that which was originally
supplied by the manufacturer such as a change
in set pressure. Conversions, when required
by the owner/user, shall only be performed
by
the manufacturer, their appointed/authorized
assembler or repair center in strict
accordance with written instructions provided
by themanufacturer. Communication with
themanufacturer is critical when making
any conversion to ensure the converted
valve(s) provides the same safe, reliable
performance as the original valve supplied by
the manufacturer.
For conversion information on the
Series 9300 Pressure Relief Valves:
Emerson.com/FinalControl
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
1 INTRODUCTION
1.1 Description of valve
The Series 9300 employs the highly successful
pressurized PTFE film seat, as well as protected
FEP diaphragms. The design allows these
valves to be used in the pilot operated pressure
relief mode and simultaneously provide vacuum
relief, either via weight loads of the internals,
or with a specific pilot control of the vacuum
opening. The Series 9300 was designed with a
special studded inlet connection to reduce the
inlet profile, and coupled with larger orifice
areas, these valves provide flow capacities as
much as 45% greater than the Series 90 valves.
The Series 9300 is a full body valve to pipe away
the discharge if required.
1.1.1 Pilot operated safety relief valve with
non-flowing modulating pilot
• 9340P - Positive pressure relief valve
• 9340C - Positive and negative pressure relief
valve
• 9304V - Negative pressure relief valve
Pilot operated valves use a pilot to control
pressure over a large unbalanced member in
the main valve, such as a diaphragm piston.
Thelarge overbalance means a much larger
force on top of the seat compared to process
forces pushing up on the seat. At set pressure,
the pilot relieves the pressure quickly,
permitting the main valve seat to open rapidly.
All of the pilots have the same construction,
except for the location of the connections
to the main valve diaphragm actuators, or
theconnections for the pressure sense.
Foreither the 9340P or the 9340C, thepilot
controls only the positive pressure relief.
Thenegative pressure relief is controlled by
theweight of the parts that move in the main
valve when it opens. In the 9304V, the pilot
controls thenegative pressure relief.
1.1.2 Pilot operated safety relief valve with flowing
modulating or snap action pilot
• 9390P - Positive pressure relief valve
• 9390C - Positive and negative pressure relief
valve
• 9309V - Negative pressure relief valve
Weighted-loaded and spring operated valves
open as process forces overcome downward
forces, with little flexibility to overcome
problem applications. Anderson Greenwood
pilot operated valves can be adjusted to open
with a rapid ‘snap’ action or modulating action.
Most applications are well served by the snap
action mode, with full opening at set pressure
and full reseating after a short blowdown.
However, some systems might best be served
by a proportional opening, whereby the valve
opens just enough to satisfy small upsets
and maintain constant system pressure, yet
still have the capability to reach full capacity
within 10% overpressure. The 9390C and 9309V
pilots have the same construction except for
thelocation of the connections for the pressure
sense. For either the 9390P or 9390C, thepilot
controls only the positive pressure relief.
Inthe9309V, pressure relief is controlled
by theweight of the parts that move in the
main valve when it opens. The pilot controls
the negative pressure relief on the negative
pressure relief valve. The Anderson Greenwood
9390 Series can be set for a snap acting or
modulating mode with a simple adjustment of
the external blowdown screw. No part changes
are necessary to change the operating mode.
1.2 Installation
For valves supplied with eyebolts, follow the
instructions in Anderson Greenwood Pilot
operated safety relief valves 05-9040-352
(VCOSI-06034 Operating and Safety
Instructions) pertaining to the safe use and
storage of eyebolts.
Refer to Anderson Greenwood Pilot operated
safety relief valves 05-9040-372 (VCIOM-03099
Winterization Guidelines) and 05-9040-352
for more information regarding Winterization
requirements.
STORAGE AND HANDLING
Pressure/vacuum 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 at 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.

3
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
1.6 SIZE/PRESSURE RANGES OF SERIES 9300 PRESSURE/VACUUM RELIEF VALVES
Materials AL, CS, SS
Main valve soft goods PTFE Diaphragm seat and seals
Pilot soft goods Elastomer or all PTFE Soft goods
Set pressure range 4” wc to 50 psig (9.9 mbarg to 3.45 barg)
Vacuum range -1.73” wc to -14.7 psig (-4.3 mbarg to -1.01 barg)
Process temperature -320°F to 200°F (-196°C to 93°C)
Size 2” to 12”
Blowdown - (fixed or variable)
2 MAIN VALVE
2.1 General main valve maintenance
Since the Series 9300 valve can be either a
pressure only, vacuum only, or pressure/
vacuum relieving device, it is built in a modular
fashion. The standard single diaphragm unit
will function on pressure and vacuum, however,
opening under very low vacuum requires use of
the auxiliary diaphragm chamber. The valve can
also be repaired in a modular fashion. The seat
can be replaced without complete disassembly
of the diaphragm cases. Selective repair can be
performed as required.
Prior to disassembly of the main valve
or pilot, it is recommended to stamp or
mark the location of the pilot, and the
orientation of thediaphragm cases, studs,
and column supports to the main valve body.
1.7 Basic pilot series for the 9300 main valve
1.7.1 Series 91 Pilot
The Series 91 was designed for specific
applications where FEP diaphragms alone were
not rugged enough and premium sealing
was
required for super cryogenic fluids. Series9
1
design includes stainless steel (SS), and PTFE
diaphragms which provide extraordinary
performance for hard to hold cryogenic fluids.
1.7.2 Series 93 Pilot
The Series 93 is a pilot operated pressure
relief valve designed with elastomer seats
and seals, and construction materials in
aluminum (AL), carbon steel (CS), and stainless
steel(SS). These construction materials satisfy
the majority of gas piping and chemical tank
applications. The Series 93 pilot can be used
on any Series 9000 valve except a combination
9000 larger than 6”.
1.7.3 Series 93T Pilot
The Series 93T was an offshoot of the Series
93, designed specifically for cryogenic and
chemical applications where an elastomer seal
is not satisfactory.
1.7.4 Series 400B
The Series 400B is used with 8”, 10”, and
12” combination weight-loaded vacuum and
pressure valves where quick relieving of dual
chamber diaphragms is required to open
themain valve.
2.2 Main valve single chamber diaphragm
disassembly (Refer to figure 1)
1. Remove the pilot (as a unit) and the tubing
from the diaphragm case. Set them aside.
Note: match mark orientation of tubing and
case assembly to the body. This will assist in
reassembly.
2. Unscrew the case bolts (700/710) and
remove the upper diaphragm case (210).
3. On valve sizes 2” through 4”, remove the
diaphragm assembly, lower case (280), shaft
(320) and seat plate assembly from the main
valve body (100).
4. On valve sizes 6” and larger, remove seat
plate assembly from shaft (320) prior to
removing diaphragm assembly, lower
case (280), and shaft (320). To remove, spin
diaphragm plate assembly counterclockwise
while holding seat plate assembly stationary
until shaft (320) is free of seat hub (420).
Theseat plate assembly should then rest on
nozzle (460).
5. On valve sizes 6” and larger, remove
diaphragm assembly and shaft (320) from
lower case (280). Then remove lower case
from the body (100).
6. On valve sizes 6” and larger, lift seat plate
assembly from the body (100).
CAUTION
When removing seat plate assembly, be careful
not to damage thenozzle (460).
7. Unscrew counterclockwise the seat plate
assembly from the main shaft (320). This is
normally a hand operation, however, a
9
/
16”
(14.3 mm) wrenching flat is provided on the
seat hub (420). The connecting thread will
run free, then tighten, and run free again as
it disengages from a locking helicoil (330)
in the vertical shaft (320). This will allow the
seat plate assembly, diaphragm assembly
and lower case (280) to be separated.
Thispracticewill ensure proper alignment and
location of parts during reassembly.
To prevent mixing up parts it is recommended
to repair the main valve and pilot in stages.
Forthis reason, the diaphragm, nozzle, and seat
maintenance and/or replacement instructions
are separate from the pilot instructions.
8. Holding the shaft (320) stationary, remove
the jam nut (520) from the diaphragm
assembly. Remove the diaphragms
(170,175, 950, 960), washers (580, 590, 600),
gaskets (620), plates (150, 160), and lower
case (280) (as a unit) from the shaft (320).

4
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
2.3 Main valve dual chamber diaphragm
disassembly (refer to figure 2)
1. Remove the pilot and tubing from
theauxiliary diaphragm case.
Note: match mark orientation of tubing and
case assembly with the body. This will assist
in reassembly.
2. Unscrew the upper auxiliary case bolts
(700) and nuts (730), and remove the upper
auxiliary diaphragm case (210B).
3. Install a 6” to 8” long braided wire through
the hole at the top of the lift rod (250) to retain
the lift rod (250). (See Figure 3, detail C)
4. Lift the auxiliary (160B, 170B, 290) and main
diaphragm (150, 160A, 170A) assemblies
to the full open position using the auxiliary
vacuum plate (160B). The open dome port
can be temporarily capped to hold the main
diaphragm assembly open.
5. Remove nuts (530 and 520B) and PTFE
O-ring (670). (See Figure 3, detail A).
6. The lift rod (250) is attached to the auxiliary
plate bushing (240) with threads. Unscrew
the lift rod (250) from the bushing (240) by
turning the rod (250) clockwise until it drops
down into the main valve shaft bore (320).
7. Remove the main diaphragm case bolts
(700, 710). Remove the studs (810) from
the body (100). Remove the lower auxiliary
diaphragm case (280B) and the upper main
diaphragm case (220) as a unit, which is
assembled to the diaphragm case adapter
(230). Allow the lift rod (250) to slip from
the center hole and lift the lower auxiliary
diaphragm case (280B), upper main
diaphragm case (220), and adapter (230)
upwards as one unit.
CAUTION
Be careful not to bend the lift rod (250) during
case assembly removal.
8. On valve sizes 2” through 4”, remove
thediaphragm assembly (150, 160A, 170A),
lower case (280), shaft (320) and seat plate
assembly (910, 920) from the main valve
body (100).
9. On valve sizes 6” and larger, remove seat
plate assembly (910, 920) from shaft (320)
prior to removing diaphragm assembly
(150, 160A, 170A), lower case (280) and
shaft (320). To remove, spin diaphragm
plates (150, 160A, 170A) assembly
counterclockwise while holding seat plate
(910, 920) assembly stationary until shaft
(320) is free of seat hub (420). The seat plate
(910, 920) assembly should then rest on
nozzle (460).
10. On valve sizes 6” and larger, remove
diaphragm assembly (150, 160A, 170A) and
shaft (320) from lower case (280A). Then
remove lower (280A) case from the body (100).
11. On valve sizes 6” and larger, lift seat plate
(910, 920) assembly from the body (100).
CAUTION
When removing seat plate assembly (910, 920),
becareful not to damage the nozzle (460).
12. Unscrew counterclockwise the seat
plate (910, 920) assembly from the main
shaft (320). This is normally a hand
operation, however, a
9
/
16” (14.3 mm)
wrenching flat is provided on the seat
hub (420). Theconnecting thread will
run free, thentighten, and run free again
as it disengages from a locking helicoil
(330) in the vertical shaft (320). This will
allow theseat plate assembly (910, 920),
diaphragm (150,160A,170A) assembly and
lower case (280A) to be separated.
13. Holding the shaft (320) stationary,
remove the jam nut (520A) from the
diaphragm (150, 160A, 170A) assembly.
Removethediaphragms (170A, 175A, 950,
960), washers (580, 590, 600), gaskets
(620A), plates (150A, 160A), and lower
case (280A) (as a unit) from the shaft (320).
(Seefigure 3, detail C).
With the main valve disassembled, you are now
ready to disassemble, inspect, and replace soft
goods starting with the seat plate (910, 920)
assembly.

5
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
MAIN VALVE PARTS
Item Description
100 Body
110 Screw - nozzle retainer
120 Screw - seat (used with Item 130 seat plate assembly option 1)
125 Clamp band - seat (used in place of item 120 and 130 seat plate assembly option 2)
130 Nut, lock (used with item 120 seat plate assembly option 1)
140 Retainer seat
150 Plate - main pressure
160 Plate - main vacuum
170 Diaphragm - main
175 Diaphragm reinforcement (used on 2” and 3” low pressure only)
210 Case, upper diaphragm
215 Cap spacer (6” only, not used on dual chamber diaphragm)
220 Case, upper main (used on dual chamber diaphragm only)
230 Adapter (used on dual chamber diaphragm only)
240 Bushing (used on dual chamber diaphragm only)
250 Rod (used on dual chamber diaphragm only)
260 Bushing - rod (used on dual chamber diaphragm only)
270 Washer (used on dual chamber diaphragm only)
280 Case, lower diaphragm
290 Plate - aux pressure (used on dual chamber diaphragm only)
300 Washers (used under 700/710 on aluminum cases only)
320 Shaft - assembly (includes item 330 as part of assy)
330 Helicoil
340 Sleeve guide
360 Bushing split (not used on 2” and 3” or high pressure)
420 Hub seat
430 Spacer seat
440 Bushing seat
450 Nut - seat jam
460 Nozzle (assembly)
500 Bushing guide
520 Nut - jam
530 Nut (used on dual chamber diaphragm only)
570 Secondary seat (high pressure only)
580 Washer
590 Washer
600 Gasket - clamp plate
610 Seat - film
620 Gasket - case
630 Nozzle gasket
640 Spacer (O-ring/-018)
660 Gasket - adapter (used on dual chamber diaphragm only)
670 Seal - adapter (used on dual chamber diaphragm only)
680 Retaining - ring (used on dual chamber diaphragm only)
690 Seal - rod (used on dual chamber diaphragm only)
700 Cap bolt - hex
710 Cap bolt - eye (not shown used on 4” and above)
730 Nuts (used on dual chamber diaphragm only)
810 Stud
820 Nut
840 Stud - 2nd chamber support (used on dual chamber diaphragm only)
850 Nuts (used on dual chamber diaphragm only)
890 Screen - lower case
900 Screen - upper case (used on dual chamber diaphragm only)
910 Plate - seat
920 Plate - seat protector
930 Nameplate (not shown)
940 Rivets (not shown)
950 Diaphragm slipper outer
960 Diaphragm slipper inner
970 Washer seat (used prior to 1990)
NOTE
Suffix A and B are used after Item #s to denote parts
for main and auxiliary chambers in the dual chamber
design.

6
100 810/820 110 460
170/175 500
700/710
620
950
960
210
890
160
150
280
340
360
320
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
See detail E
See detail D
See detail E
See detail D
Seat plate assembly
(lowpressure stainless steel)
Seat plate assembly
(lowandhighpressure aluminum)
(highpressurestainless steel)
Internal pressure pickup not included with
remote pressure sense
See detail C
FIGURE 1
9390P Single chamber diaphragm assembly

7
700
730
280B
290
250
170A/170B
700/710
160B 170B/175B
210B
810/820
100
730
620B
730
840
220
500A
890
620A
160A
150
280A
340
360
320
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
See detail E
See detail D
Seat plate assembly
See detail B
Dome port
See detail A
See detail C
FIGURE 2
9390C Dual chamber diaphragm assembly
Remote pressure sense shown

8
690
520
580
590
600
320
150
160
110
230
680
900
500B
530
670
590B
175B
600
240 690
520B
580
160B
170B
270
230
220
500B
660
160A
170A
150A
250*
520A
260*
580
590
175A
600
320
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
Retaining wire for assembly
and disassembly
FIGURE 3
Detail “A” and “B” assembledDetail “D”
Single chamber diaphragm
Detail “C”
* Used only with dual chamber diaphragm model
Detail “A”
Auxiliary diaphragm chamber assembly
Detail “B”

9
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
2.4 Main valve seat disassembly and
replacement (bolted) (refer to Figure 4, detail
D, and Figure 5, detail E)
1. To assist in seat plate disassembly, partially
thread the seat plate assembly into the
fixture which consists of a 6” long hexagon
bar with a ½” x 13 x 1” deep threaded hole in
one end, and a
5
/
16” x 18 x 1” deep threaded
hole in the other end.
Note: the
5
/
16 ” hole is for valves sizes
2” through 6” and the ½” hole is for 8”
through12”.
2. With the seat plate assembly threaded into
the fixture, secure the fixture into a vise and
remove the seat screws (120) by holding
thelock nut (130) and turning the screws
(120) counterclockwise. Then remove
theseat plate (910).
3. Holding the
9
⁄
16” wrench flat (located at
the top end of the seat hub (420)) secure,
loosenthe seat plate jam nut (450) by
turning it clockwise. Then remove the seat
hub (420) from the fixture and disassemble
the remaining parts of the seat plate
assembly.
Note: secondary PTFE seat (570) used only
in high pressure stainless steel options.
4. Inspect seat plate (910) radius for damage.
Minor nicks and scratches may be removed
by polishing radius with 320 grit or finer
sand paper, maintaining seat shape.
FIGURE 4, DETAIL D
Main valve seat plate hub assembly
WARNING
No lapping or machining of seat plate allowed.
5. Inspect threaded parts and sealing surfaces
and if damaged replace. Otherwise, clean all
metal parts with oil free solvent and dry with
lint free towel.
6. The new seat film (610) is supplied as a
square sheet of PTFE without holes for
thescrews. To install, secure the larger end
of the seat hub with the
9
/
16” wrenching flat
into a vise and install in this order: protector
plate (920), PTFE seat film (610), seat
bushing (430), spacer (640) (on outside of
seat plate (910), on 6” size seat plates), seat
plate (910) (radius side down) and jam nut
(450). Then tighten by turning the jam nut
(450) clockwise.
7. Remove the seat hub (420) from the vise and
install it into the fixture. To complete the
assembly, install the secondary seat (570)
(high pressure stainless steel only) and then
the seat retainer (140) (bevel side down)
onto the seat film (610). Then using a scribe
punch out a hole in the film starting with the
four threaded indicator holes (only threaded
holes in seat retainer (140)). Then install
the
4 long retainer screws (120) through those
holes and tighten in a criss cross pattern.
Note: lubricate retainer screws (120) with
Fluorolube to reduce the chances of galling.
8. Punch out the remaining seat screw holes
and install the screws (120) and nuts (130)
and tighten.
CAUTION
Be careful not to puncture or scratch the seat
(610) during this operation.
9. Trim off the excess film from the outside
diameter of the seat plate (910) to complete
the replacement process.

10
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FIGURE 5, DETAIL E
Main valve seat plate assembly (internal pressure sense shown)
Aluminum internals
Low pressure stainless steel internals
High pressure stainless steel internals
2” Inlet size 3” thru 12” inlet size
2” Inlet size 3” thru 12” inlet size
2” Inlet size 3” thru 12” Inlet size