Emerson Anderson Greenwood 9300, Anderson Greenwood 9390P, Anderson Greenwood 9340C, Anderson Greenwood 9309V, Anderson Greenwood 9304V Installation And Maintenance Instructions Manual
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ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
Before installation these instructions must be fully read and understood
TABLE OF CONTENTS
1 Introduction .................................................. 2
2 Main valve .................................................... 3
3 Pilot maintenance ...................................... 14
4 Functional testing of complete
assemblyofmain 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
accessoryrepairkit ................................... 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.
SAFETY PRECAUTIONS
When the safety valve is under pressure
neverplace 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
asystem 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 periodically tested and
reconditioned to ensure correct function.
WARNING
The protection and safety of equipment, property
and personnel depends on the proper operation
of the safety valves described in this manual.
AllEmerson 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.
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
thedome space of pilot operated safety valves.
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
www.valves.emerson.com.
Before
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
theoriginal 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.
Emerson.com/FinalControl
© 2017 Emerson. All rights reserved.
Engineering Doc. #05.9040.275 Rev.D
VCIOM-06024-US 15/01
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.
Thelarge 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
theconnections for the pressure sense.
Foreither the 9340P or the 9340C, thepilot
controls only the positive pressure relief.
Thenegative pressure relief is controlled by
theweight of the parts that move in the main
valve when it opens. In the 9304V, the pilot
controls thenegative 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
thelocation of the connections for the pressure
sense. For either the 9390P or 9390C, thepilot
controls only the positive pressure relief.
Inthe9309V, pressure relief is controlled
by theweight 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 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).
1.3 Code applicability
The Series 9300 are designed to meet
therequirements of ASME UV Code Stamp, NB
certified capacity 15 psig and above, and API 2000.
1.4 Conversion
Valve conversions are defined as any change
w
hich 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
the manufacturer, their appointed/authorized
assembler or repair center in strict
accordance with written instructions provided
by themanufacturer. Communication with
themanufacturer 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:
www.valves.emerson.com
by
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ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
1.5 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)
1.6 Basic pilot series for the 9300 main valve
1.6.1 Series 91 Pilot
The Series 91 was designed for specific
applications where FEP diaphragms alone were
not rugged enough and premium sealing
required for super cryogenic fluids. Series9
was
1
design includes stainless steel (SS), and PTFE
diaphragms which provide extraordinary
performance for hard to hold cryogenic fluids.
1.6.2 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”.
1.6.3 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.
1.6.4 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
themain valve.
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 thediaphragm cases, studs,
and column supports to the main valve body.
Thispracticewill 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.
Forthis reason, the diaphragm, nozzle, and seat
maintenance and/or replacement instructions
are separate from the pilot instructions.
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).
Theseat 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 thenozzle (460).
7. Unscrew counterclockwise the seat plate
assembly from the main shaft (320). This is
9
normally a hand operation, however, a
/
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.
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).
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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
theauxiliary 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.
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),
becareful 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
9
operation, however, a
/
16” (14.3 mm)
wrenching flat is provided on the seat
hub (420). Theconnecting thread will
run free, thentighten, and run free again
as it disengages from a locking helicoil
(330) in the vertical shaft (320). This will
allow theseat 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.
Removethediaphragms (170A, 175A, 950,
960), washers (580, 590, 600), gaskets
(620A), plates (150A, 160A), and lower
case (280A) (as a unit) from the shaft (320).
(Seefigure 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.
CAUTION
Be careful not to bend the lift rod (250) during
case assembly removal.
8. On valve sizes 2” through 4”, remove
thediaphragm 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).
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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.
5
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
170/175
700/710
620
950
960
Seat plate assembly
(lowandhighpressure aluminum)
(highpressurestainless steel)
100
810/820 110 460
500
See detail C
See detail D
Internal pressure pickup not included with
remote pressure sense
210
890
160
150
280
340
360
320
See detail E
Seat plate assembly
(lowpressure stainless steel)
See detail D
FIGURE 1
9390P Single chamber diaphragm assembly
See detail E
6
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
700
730
280B
290
250
170A/170B
700/710
See detail D
Seat plate assembly
See detail C
160B
See detail A
See detail B
Dome port
170B/175B
210B
730
620B
730
840
220
500A
890
620A
160A
150
280A
340
360
320
810/820
FIGURE 2
9390C Dual chamber diaphragm assembly
Remote pressure sense shown
100
See detail E
7
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
175B
590B
530
670
160
150
Single chamber diaphragm
600
580
320
600
520
590
520B
580
160B
170B
270
690
110
230
Detail “A” and “B” assembledDetail “D”
Retaining wire for assembly
and disassembly
680
900
500B
250*
220
500B
FIGURE 3
240
Detail “A”
Auxiliary diaphragm chamber assembly
230
Detail “B”
690
660
160A
170A
150A
580
590
320
Detail “C”
* Used only with dual chamber diaphragm model
520A
260*
175A
600
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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
5
one end, and a
/
16” x 18 x 1” deep threaded
hole in the other end.
5
Note: the
/
16
” hole is for valves sizes
2” through 6” and the ½” hole is for 8”
through12”.
2. With the seat plate assembly threaded into
the fixture, secure the fixture into a vise and
remove the seat screws (120) by holding
thelock nut (130) and turning the screws
(120) counterclockwise. Then remove
theseat plate (910).
9
3. Holding the
⁄
16” wrench flat (located at
the top end of the seat hub (420)) secure,
loosenthe 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.
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
thescrews. To install, secure the larger end
9
of the seat hub with the
/
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.
FIGURE 4, DETAIL D
Main valve seat plate hub assembly
9
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
2” Inlet size 3” thru 12” inlet size
Aluminum internals
2” Inlet size 3” thru 12” inlet size
Low pressure stainless steel internals
2” Inlet size 3” thru 12” Inlet size
High pressure stainless steel internals
FIGURE 5, DETAIL E
Main valve seat plate assembly (internal pressure sense shown)
10
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