Installation, Operation and Maintenance Manual for
Weight Loaded Fiberglass Valves
Models 1200A, 1220A, 1260A, 1300A, 1360A, 2300A, 1720A, 1760A
IOM 1200AFBG.1
MAY 2006
IOM 1200AFBG.1
REV. A 12541
TABLE OF CONTENTS:
DESCRIPTION PAGE
Introduction 1
Valve Design & Function 2
Safety Warnings 3
Inspection and Storage 3
Installation 3 - 4
Maintenance 5 - 6
Test Procedure 7
LIST OF FIGURES
Fig. 1- Typical Tank Installation 2
Fig. 2- Pressure Relief - Operation 2
Fig. 3- Vacuum Relief - Operation 2
Fig. 4- Required Pallet Clearance 5
Fig. 5- Pallet Assembly Detail - FRP 6
Fig. 6- Pallet Assembly Detail - Kynar 6
Fig. 7- Typical Valve Cross-Section 6
Fig. 8- Model 1200A Valve 8
Fig. 9- Model 1220A Valve 9
Fig. 10- Model 1260A Valve 10
Fig. 11- Model 1300A Valve 11
Fig. 12- Model 1360A Valve 12
Fig. 13- Model 2300A Valve 13
Model Identification 15
Product Limited Warranty 15
LIST OF TABLES
Table 1 - Bolt Torque (Installation) 4
Table 2 - Fiberglass Valve Weights 4
Table 3 - Spare Parts P/N 5
Table 4 - Pallet Assembly Weights 6
Table 5 – List of Abbreviations 14
Table 6 – FRP Resin Options 14
INTRODUCTION:
venting depends upon the tank size, volatility of
the tank contents, the pumping rates and the
temperature. Refer to API Standard 2000 for the
procedures to determine venting requirements.
Relief valves must be carefully maintained by a
qualified valve technician. It should only be
assembled under clean conditions, preferably in a
service shop environment. Carefully read and
understand this manual before installing or
attempting to repair a valve. Groth Corporation or
a factory authorized repair center offers repair
services for all products manufactured by the Tank
Protection Division.
The table below shows the six different valve
Models covered in this manual and indicates their
Pressure (P) and/or Vacuum (V) relief capabilities.
Model P V Description
1200A
1220A
1260A/
1760A
1300A
1360A
2300A
For a list of abbreviations used in this manual,
refer to page 14. For information not contained in
this manual, please contact:
Groth Corporation
13650 N. Promenade Blvd
Stafford, Texas, 77477
281-295-6800(Phone)
281-295-6995(Fax)
The nameplate below shows the basic information
that is listed for each relief valve:
Vent to atmosphere
Vent to Header
Vent to Header
Top mounted
Side mounted
Vent to atmosphere
Pressure and/or vacuum relief valves are used on
liquid storage tanks and other process vessels or
systems to prevent structural damage due to
excess internal pressure or vacuum.
Storage tanks are pressurized when liquid is
pumped in, compressing the existing vapor or
when rising temperatures cause increased
evaporation or expansion of existing vapor.
Conversely, a vacuum condition may be created
when pumping out or due to falling temperature.
To prevent tank damage, vapor must be allowed
into or out of the tank at specified
pressure/vacuum conditions. The volume rate of
© Copyright Groth Corporation 1999
1
VALVE DESIGN AND FUNCTION:
Fig. 1 - Typical Tank Installation
Tank protection equipment typically includes an
operating valve which is designed to provide
pressure/vacuum relief under normal pump in/out and
thermal breathing conditions. An emergency relief
valve can also provide both pressure and vacuum relief
and normally it is sized to provide pressure relief if there
is a fire in the immediate vicinity of the tank. It may also
be sized by the tank designer to provide protection in
the event of equipment failure (such as the rupture of a
process steam line or an inert gas blanketing system
failing “wide open”) or operator error.
A typical tank installation is shown in Fig. 1 which
includes the following Groth products:
Model 1220A ‘P/V’ Weight Loaded Valve
Model 3000 Gas Blanketing Regulator
Model 2000 Emergency ‘P’ Relief Valve
Pressure Relief: As the pressure in the storage tank
increases, the vacuum pallet is held shut. When the set
pressure is reached, the pressure pallet lifts and
relieves to atmosphere (or to a header if it is a pipe
away valve). See Fig. 2.
Vacuum Relief: As a vacuum is drawn in the storage
tank (for example, when fluid is being pumped out), the
pressure pallet is held shut by atmospheric pressure.
When the vacuum setting is reached, the pallet lifts and
air is drawn in from the atmosphere. See Fig. 3.
Installation Notes: (See Fig. 1 above)
1. Minimum clearance between tank roof and vacuum
inlet port must be at least equal to the valves’
nominal flange bore.
2. Tank nozzle bore must be > or = valve inlet flange
bore.
3. Inlet and outlet piping loads must be supported by
appropriate structural supports, NOT by the valve
body.
Fig. 2- Pressure Relief
Fig. 3 - Vacuum Relief
2
SAFETY WARNINGS:
This section is an overview of safety guidelines
that should be followed during the installation,
operation and maintenance of Groth Pressure/
Vacuum Relief Valves. To understand the context
of these instructions and warnings, it is necessary
to completely read and understand the contents of
this manual.
The purpose of a weight loaded pressure/vacuum
relief valve is to prevent excessive pressure or
vacuum in a tank or process system. The valve
must be designed for the proper MAWP and flow
requirements of the system. Consult API Standard
2000 for tank protection sizing procedures. An
improperly specified or functioning relief valve may
result in structural damage to the tank or system,
and can cause severe personal injury or death.
Valves are set at the factory according to purchase
specifications. Do NOT change pressure ratings
by adding additional weights to the pallet assembly
without consulting the factory or your local Groth
representative. Adding weights to a valve may
restrict pallet lift and reduce the valves’ rated flow
capacity.
DO NOT mix pressure/vacuum pallet assemblies.
Failure to ensure that both pallet assemblies are
installed in the correct location can change the
pressure and vacuum relief settings. This can
cause a tank failure.
DO NOT attempt to remove the valve from the
tank or process vessel without first bleeding all
pressure from the system. ALTERNATIVE
MEANS OF PRESSURE RELIEF MUST BE
PROVIDED WHEN THE VALVE IS OUT OF
SERVICE.
The valve has been exposed to process vapors
while in service. Observe all plant procedures and
Material Safety Data Sheets (MSDS) for the
products in the system when inspecting, adjusting
or servicing the valve. Take appropriate safety
precautions regarding eye protection, respiration
and skin contact.
The tank pressure required to discharge the
normal or emergency venting requirements of the
tank will be increased by the amount of back
pressure in the discharge header, on a pipe away
valve configuration. Maximum possible discharge
header pressure must be considered when sizing
the pressure relief valve.
INSPECTION AND STORAGE:
The pressure/vacuum relief valve is carefully
packaged to prevent damage or contamination
during shipping. Inspect all equipment when it is
received; report any damage to the carrier
immediately. The valve should be protected
during handling and storage. Keep all the ports
plugged to prevent intrusion of foreign materials.
Before installation, inspect the unit for indications
of physical damage or internal contamination. If
these are observed, the valve must be
disassembled, cleaned and repaired before
installation.
INSTALLATION:
A typical valve installation on a tank or vessel is
illustrated in Fig.1 on Page 2 using a Model 1220A
Pressure/Vacuum Relief Valve.
Groth's weight loaded Pressure/Vacuum Relief
Valves are designed to provide tank protection for
both pressure and/or vacuum to +/-1 PSIG
settings. The valves provide full rated flow
capacity at 100% over-pressure. Consult factory
for performance under other conditions.
WARNING: All valves must be installed level as
shown in Fig 1. To achieve nominal flow capacity,
the tank nozzle bore must be at least the same
nominal dimension as the relief valve inlet port.
This series of valves all have 150# ANSI flange
drilling compatibility. Torque guidelines are listed
in Table 1. The valves are NOT rated for full
flange pressure and do not require high bolting
torque. Consult factory for special applications.
3
The following guidelines should be
observed at installation:
1. Inspect the gasket seating surface of the tank
nozzle flange. It must be clean, free of
scratches, corrosion, tool marks, and flat.
2. Fiberglass valves are furnished with flat face
flanges; they must ONLY be installed on a
mating flat face flange with a full faced gasket.
3. Inspect the gasket; make sure that the material
is suitable for the application.
5. Center the gasket within the bolt circle.
6. Lift the valve carefully using one or more
fabric slings to support both pressure &
vacuum chambers.
7. Set the valve carefully on the nozzle. Install
the studs & tighten nuts hand tight.
8. Torque all fasteners to half the value listed
in Table 1 in a staggered, alternating
pattern.
4. Lubricate all studs and nuts with an
appropriate thread lubricant. If the valve will
see high temperature service or stainless steel
fasteners are used, apply an anti-seize
compound such as moly-disulfide.
9. Make sure that the flanges are not
distorted and that the gasket is evenly
compressed. Make up the final torque and
check that no further nut rotation occurs at
the torque value specified in Table 1
below:
TABLE 1 - Bolt Torque & Stud Specifications - ANSI #150 FF Flange Connections
Mounting Bolt Torque Number Bolts Stud Specifications
Flange Flat Face
Lb. - Ft. kg. - m
2" 25 3.5 4 5/8" - 11 3.00 4
3" 40 5.5 4 5/8" - 11 3.50 4
4" 40 5.5 8 5/8" - 11 3.50 8
6" 40 5.5 8 3/4" - 10 3.75 8
8" 55 7.5 8 3/4" - 10 4.00 8
10" 60 8.5 12 7/8" - 9 4.50 12
12" 80 11.0 12 7/8" - 9 4.50 12
Total Thread
UNC
Stud
Length
Qty
Notes:
1. Do NOT bolt a FF FRP body to a RF tank nozzle.
2. Stud Length is based on standard ANSI mating flange, standard hex nut and two narrow series flat washers.
TABLE 2 – Fiberglass Valve Weights
Size 1200A 1220A 1260A/1760A 1300A 1360A
Lb. Kg. Lb. Kg. Lb. Kg. Lb. Kg. Lb. Kg. Lb. Kg.
2"
3"
4"
6"
8"
10"
12"
Note: Based on pressure setting = 1 PSIG & Vacuum setting = 2 Oz./Sq.In. (where applicable)
18 8.3 20 9.3 13 5.9 5 2.3 8 3.8 10 4.4
32 14.6 36 16.4 23 10.4 10 4.4 11 4.8 18 8.0
49 22.5 55 24.9 36 16.5 15 7.0 16 7.3 26 11.9
101 45.7 114 51.8 73 33.3 29 13.1 31 14.1 51 23.2
149 67.8 168 76.6 112 50.7 46 20.7 44 20.1 78 35.5
219 99.4 233 105.9 159 72.2 66 29.9 60 27.5 123 55.7
289 131.6 314 142.7 216 98.1 95 43.2 77 34.9 167 76.0
2300A
4
MAINTENANCE:
Groth Corporation recommends that all service
performed on a pressure/vacuum relief valve be
done at the factory or a factory authorized repair
center. Trained mechanics with specialized test
equipment will ensure that the valve is accurately
set.
It is important to regularly inspect the diaphragm,
guides (body & cover) and seating surfaces to
ensure the valve can open freely. Refer to Fig. 5 7 on the next page which illustrate a typical
Pressure/Vacuum relief valve when disassembling
the unit. Also inspect the valve body – especially
at all tie-ins between flange & pipe sections for
signs of corrosion or deterioration.
WARNING: Before disassembling valve carefully
read and understand the Safety Warnings listed on
page 3.
1. Loosen and remove all nuts and washers.
2. Lift off the pressure and/or vacuum cover(s).
The weatherhood and weatherhood posts have a
snug fit. Loosen the hex nuts that retain the
weatherhood posts in the body a few turns; this will
allow the weatherhood to be removed easily.
3. Remove the pressure and/or pallet assembly(s)
by firmly grasping the stem and lifting straight up.
Depending on the pressure/vacuum settings of the
particular valve, weight plates are added to the
pallet assembly. (Note that in most instances,
these are integral with the pallet.) The weights and
pallets MUST be reinstalled in their original
locations. Make sure that all weight plates stay
with the appropriate pallet assembly. Tag the
assemblies "Pressure" and "Vacuum" as they are
removed from the valve.
4. Carefully inspect the body for corrosion,
damage or product build up. Also inspect the guide
hole in the vacuum cover. Check the seating
surfaces for pitting, corrosion or product build up.
Fig. 4
Required
Pallet
Clearance
It is recommended that all soft goods including
diaphragms, O-Rings and cover gasket are
replaced. For a list of recommended spare parts
see the drawings on pages 8 – 13.
NOTE: If the seat(s) are damaged, it is
recommended that the body be returned to the
factory for repairs.
5. If the stems are replaced, verify that the
replacement component is the same length as the
original stem. Note that stem engagement in the
guide is approximately 0.75” for 2” - 4” sizes and
1.00” for 6” - 12” sizes.
6. Verify that the pallet assembly(s) are installed
in the proper location. Assemble in reverse order.
Make sure that pallet is flat on the seat and that
the stem is not cocked at an angle when the
weatherhood and pressure/vacuum cover(s) are
installed. Tighten all fasteners firmly.
WARNING: When assembling a P/V valve,
always use the correct length stem, put the
pressure and vacuum pallet assembly(s) back in
their original location and ensure that the stem is
straight and fits into the guide in the cover or
weatherhood.
1. If the stem length is too long, pallet lift will be
restricted; the valve will not attain its full rated
flow capacity.
2. If the pressure and vacuum pallet assemblies
are mixed at assembly, the settings will be
changed.
3. If the stem is cocked at an angle, pallet lift may
be completely blocked.
An over-pressure can occur if any of these three
conditions happens. This can cause a tank failure,
severe personal injury and material damage.
Required Pallet Clearance
Size Pressure Vacuum
2” 1.3” 1”
3” 1.95” 1.5”
4” 2.6” 2”
6” 3.9” 3”
8” 5.2” 4”
10” 6.5” 5”
12” 7.8” 6”
5
TABLE 3: Part Numbers - Spare Parts *
Valve Size
Component Stem 2" 3" 4" 6" 8" 10" 12"
Dphgm, 10 mil FEP
Dphgm, 20 mil FEP
Dphgm, 10 mil FEP
Dphgm, 20 mil FEP
Gasket - - - - - 83065001 82562001 82352001 82414001 82282001 83697001 91018001
Alloy
C276
Alloy
C276
PVDF 83064101 82561101 82358101 82412101 82283101 83173101 82376101
PVDF 83064102 82561102 82358102 82412102 82283102 83173102 82376102
83064001 82561001 82358001 82412001 82283001 83173001 82376001
83064002
82561002 82358002 82412002 82283002 83173002 82376002
Setting < 4 OSI 4 - 8 OSI 8 - 12 OSI 12 - 16 OSI
Diaphragm
Quantity
* Please provide the valve serial number and pressure/vacuum setting(s) when ordering replacement pallet
assembly components.
10 mil 20 mil 10 mil 20 mil 10 mil 20 mil 10 mil 20 mil
1 --- --- 1 1 1 --- 2
Fig. 5 - Pallet Assembly Detail – FRP/Alloy C276
Fig. 6 - Pallet Assembly Detail – All PVDF
Standard pallet assembly components are the
specified FRP material with Alloy C276 stem (if the
pressure or vacuum setting is above the minimum
setting). The pallet, retainer plate and diaphragm
are attached to the stem with a flat washer, lock
washer and hex nut which are generally noted as
items 12, 13 & 14 for each available model.
If the pressure or vacuum setting is lower than what
can be attained with the standard FRP/Alloy C276
pallet assembly, an all PVDF assembly is available.
The pallet, retainer plate and diaphragm are
attached to the stem using double Fluoropolymer
hex nuts (Item 21). The all PVDF assembly is
available for both pressure and vaccum ports for all
models and sizes.
The drawings of all six models follow in Figures 8 – 13. Representative Bill of Materials are
structured as follows for each model.
Column 1: Epoxy Vinyl Ester Presin 411-45 FRP with Alloy C276 internal metal components.
Column 2: Epoxy Vinyl Ester Presin 411-45 FRP with PVDF pallet assemblies.
Column 3: Epoxy Vinyl Ester Presin 470-36 FRP with Alloy C276 internal metal components.
Column 4: Furan FRP with Alloy C276 internal metal components.
Note that the PVDF pallet assemblies can be used with any FRP material.
6
TEST PROCEDURE:
1. A chart showing nominal pallet assembly
weights for three common units of pressure is
shown below in Table 4. Before starting to
reassemble a valve, calculate the nominal
pressure and vacuum pallet assembly weights.
Weigh both pallet assemblies to ensure the correct
settings.
2. After final assembly, mount the valve on a Tank
Vent Test Stand (TVTS) and slowly raise the
pressure at the flow rate specified below:
Valve Size Test Flow Rate
2" - 6"
8"- 12"
0.5 SCFH
5.0 SCFH
ACCEPTANCE CRITERIA: The pressure gauge
shall maintain a pressure equal to or greater than
75% of set pressure for a one minute period while
the specified flow rate is maintained.
3. If the valve fails to meet the 75% criteria, it must
be disassembled and the seat, pallet, and or
diaphragms repaired or replaced.
4. Complete a Test Report indicating the actual
pallet assembly weight and the peak pressure
achieved at the specified Test Flow Rate.
5. A copy of the Test Report shall be maintained
with the Valve Maintenance Records.
TABLE 4 - Nominal Pallet Assembly Weight Per Unit of Pressure (*)
Valve Size
SET
1.0 OSI 0.22 0.10 0.48 0.22 0.84 0.38 1.84 0.84 3.24 1.47 5.03 2.29 7.22 3.28
1.0 IN WC 0.13 0.06 0.28 0.13 0.48 0.22 1.06 0.48 1.87 0.85 2.91 1.32 4.17 1.90
1.0 mbar 0.05 0.02 0.11 0.05 0.19 0.09 0.43 0.19 0.75 0.34 1.17 0.53 1.67 0.76
Example: Pallet Assembly Weight Calculation (PAW)
6" Valve set at 7.5 OSI Read weight at 1.0 OSI from table Weight = 1.84 Lb.
Multiple weight by set pressure PAW (*)= 1.84 x 7.5 = 13.8 Lb.
(*) = Includes pallet, retainer plate, stem, diaphragm, weight plates (integral w/ pallet) & fasteners.
2" 3" 4" 6" 8" 10" 12"
[Lb.] [kg] [Lb.] [kg] [Lb.] [kg] [Lb.] [kg] [Lb.] [kg] [Lb.] [kg] [Lb.] [kg]
7
Groth Model 1200A Pressure/Vacuum Relief Valve
Fig. 8
Epoxy Vinyl Ester Resin
ITEM DESCRIPTION 411-45
411-45 –
PVDF
470-36 Furan
1 Body 411-45 411-45 470-36 Furan
2 Hex Nut 316 SS 316 SS 316 SS 316 SS
3 Lock Washer 316 SS 316 SS 316 SS 316 SS
4 Flat Washer 316 SS 316 SS 316 SS 316 SS
5 Weatherhood 411-45 411-45 470-36 Furan
6 Stem-Pressure Alloy C276 PVDF Alloy C276 Alloy C276
7 Nut 316 SS 316 SS 316 SS 316 SS
8 Weatherhood Post Alloy C276 Alloy C276 Alloy C276 Alloy C276
9 Pallet-Pressure 411-45 PVDF 470-36 Furan
10 * Diaphragm (Press/Vac.) FEP FEP FEP FEP
11 Retainer Plate-Pressure 411-45 PVDF 470-36 Furan
12 Hex Nut Not Used Floropolymer Not Used Not Used
13 Hex Bolt 316 SS 316 SS 316 SS 316 SS
14 Cover 411-45 411-45 470-36 Furan
15 * Gasket-Cover * Floropolymer Floropolymer Floropolymer Floropolymer
16 Stem-Vacuum Alloy C276 PVDF Alloy C276 Alloy C276
17 Pallet-Vacuum 411-45 PVDF 470-36 Furan
18 Retainer Plate-Vacuum 411-45 Kynar 470-36 Furan
19 Screen – Vacuum (Optional) PVC PVC PVC PVC
20 Flat Washer (NS) Hastelloy C Not Used Hastelloy C Hastelloy C
21 Lock Washer (NS) Hastelloy C Not Used Hastelloy C Hastelloy C
22 Hex Nut (NS) Hastelloy C Not Used Hastelloy C Hastelloy C
23 Screen-Weatherhood PVC PVC PVC PVC
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
8
Groth Model 1220A Pressure/Vacuum Relief Valve
Fig. 9
Epoxy Vinyl Ester Resin
ITEM NAME 411-45
1 Body 411-45 411-45 470-36 Furan
2 Cover, Pressure 411-45 411-45 470-36 Furan
3 Stem, Pressure
4 Hex Bolt 316 SS 316 SS 316 SS 316 SS
5 Hex Nut 316 SS 316 SS 316 SS 316 SS
6 Flat Washer 316 SS 316 SS 316 SS 316 SS
7 Lock Washer 316 SS 316 SS 316 SS 316 SS
8
9 Pallet, Pressure 411-45 PVDF 470-36 Furan
10
11 Ret. Plate, Pres. 411-45 PVDF 470-36 Furan
12 Hex Nut (NS)
13 Flat Washer (NS)
14 Lock Washer (NS)
15 Stem, Vacuum
16 Cover, Vacuum 411-45 411-45 470-36 Furan
17 Pallet, Vacuum 411-45 PVDF 470-36 Furan
18
19 Ret. Plate, Vac 411-45 PVDF 470-36 Furan
20 Screen (Optional) PVC PVC PVC PVC
21 Hex Nut (NS) Not Used Fluoropolymer Not Used Not Used
Gasket Fluoropolymer Fluoropolymer Fluoropolymer Fluoropolymer
*
Diaphragm, Pres. FEP FEP FEP FEP
*
Diaphragm, Vac. FEP FEP FEP FEP
*
Alloy C276
Alloy C276
Alloy C276
Alloy C26
Alloy C276
411-45 - PVDF
PVDF
Not Used
Not Used
Not Used
PVDF
470-36 Furan
Alloy C276 Alloy C276
Alloy C276 Alloy C276
Alloy C276 Alloy C276
Alloy C276 Alloy C276
Alloy C276 Alloy C276
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
9
Epoxy Vinyl Ester Resin
ITEM NAME
Groth Model 1260A/1760A Pressure/Vacuum Relief Valve
Fig. 10
411-45 411-45 w/ PVDF 470-36 Furan
1 Body 411-45 411-45 470-36 Furan
2
3 Hex Bolt 316 SS 316 SS 316 SS 316 SS
4 Hex Nut 316 SS 316 SS 316 SS 316 SS
5 Flat Washer 316 SS 316 SS 316 SS 316 SS
6 Lock Washer 316 SS 316 SS 316 SS 316 SS
7 Cover 411-45 411-45 470-36 Furan
8 Stem-Pressure Alloy C276 PVDF Alloy C276 Alloy C276
9 Pallet 411-45 PVDF 470-36 Furan
10
11 Retainer Plate 411-45 PVDF 470-36 Furan
12 Hex Nut (NS) Alloy C276 Not Used Alloy C276 Alloy C276
13 Flat Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
14 Lock Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
21 Hex Nut (NS) Not Used Fluoropolymer Not Used Not Used
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
Gasket Fluoropolymer Fluoropolymer Fluoropolymer Fluoropolymer
*
Diaphragm FEP FEP FEP FEP
*
10
Groth Model 1300A Pressure/Vacuum Relief Valve
Fig. 11
Epoxy Vinyl Ester Resin
ITEM NAME 411-45 411-45 w/ PVDF 470-36 Furan
1 Body 411-45 411-45 470-36 Furan
2 Cover 411-45 411-45 470-36 Furan
3 Stem Alloy C276 PVDF Alloy C276 Alloy C276
4 Hex Bolt 316 SS 316 SS 316 SS 316 SS
5 Hex Nut 316 SS 316 SS 316 SS 316 SS
6 Flat Washer 316 SS 316 SS 316 SS 316 SS
7 Lock Washer 316 SS 316 SS 316 SS 316 SS
8 * Gasket Fluoropolymer Fluoropolymer Fluoropolymer Fluoropolymer
9 Pallet 411-45 PVDF 470-36 Furan
10 * Diaphragm FEP FEP FEP FEP
11 Retainer Plate 411-45 PVDF 470-36 Furan
12 Flat Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
13 Lock Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
14 Hex Nut (NS) Alloy C276 Not Used Alloy C276 Alloy C276
15 Screen (Opt.) PVC PVC PVC PVC
21 Hex Nut (NS) Not Used Fluoropolymer Not Used Not Used
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
11
Groth Model 1360A Pressure/Vacuum Relief Valve
Fig. 12
Epoxy Vinyl Ester Resin
ITEM NAME 411-45 411-45 470-36 Furan
1 Body 411-45 411-45 470-36 Furan
2
3 Hex Bolt 316 SS 316 SS 316 SS 316 SS
4 Hex Nut 316 SS 316 SS 316 SS 316 SS
5 Flat Washer 316 SS 316 SS 316 SS 316 SS
6 Lock Washer 316 SS 316 SS 316 SS 316 SS
7 Cover 411-45 411-45 470-36 Furan
8 Stem - Vacuum Alloy C276 PVDF Alloy C276 Alloy C276
9 Pallet 411-45 PVDF 470-36 Furan
10
11 Retainer Plate 411-45 PVDF 470-36 Furan
12 Hex Nut (NS) Alloy C276 Not Used Alloy C276 Alloy C276
13 Flat Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
14 Lock Washer (NS) Alloy C276 Not Used Alloy C276 Alloy C276
15 Screen (Opt.) (NS) PVC PVC PVC PVC
21 Hex Nut (NS) Not Used Fluoropolymer Not Used Not Used
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
Gasket Fluoropolymer Fluoropolymer Fluoropolymer Fluoropolymer
*
Diaphragm FEP FEP FEP FEP
*
12
Groth Model 2300A Pressure/Vacuum Relief Valve
Fig. 13
Epoxy Vinyl Ester Resin
ITEM NAME 411-45 411-45 w/ Kynar 470-36 Furan
1 Body 411-45 411-45 470-36 Furan
2
3
4 Hex Nut 316 SS 316 SS 316 SS 316 SS
5 Flat Washer 316 SS 316 SS 316 SS 316 SS
6 Lock Washer 316 SS 316 SS 316 SS 316 SS
7 Hex Nut 316 SS 316 SS 316 SS 316 SS
8
9 Screen PVC PVC PVC PVC
10 Pallet 411-45 PVDF 470-36 Furan
11
12 Retainer Plate 411-45 PVDF 470-36 Furan
13 Hex Nut Alloy C276 Not Used Alloy C276 Alloy C276
14 Flat Washer Alloy C276 Not Used Alloy C276 Alloy C276
15 Lock Washer Alloy C276 Not Used Alloy C276 Alloy C276
21 Hex Nut (NS) Not Used Fluoropolymer Not Used Not Used
* = Recommended Spare Parts
Refer to Fig. 5 & 6 on p. 6 for pallet assembly fastener information.
Weatherhood 411-45 411-45 470-36 Furan
Stem Alloy C276 PVDF Alloy C276 Alloy C276
Weatherhood Post
Diaphragm FEP FEP FEP FEP
*
Alloy C276 Alloy C276 Alloy C276 Alloy C276
13
Table 6: LIST OF ABBREVIATIONS
ANSI American National Standard Lb.-Ft. Pound Foot PRESS Pressure
API American Petroleum Institute MAWP Max Allowable Work.g Press. P/N Part Number
cm Centimeter mil Thousands Of An Inch PSIG Pounds Per Square Inch
ERV Emergency Relief Valve mm Millimeter S/N Serial Number
FRP Fiberglass Reinforced Plastic MSDS Material Safety Data Sheet SCFH Standard Cubic Ft Per Hour
In. WC Inches Of Water Column OP Over Pressure SLV Spring Loaded Valve
kg Kilogram OSI Ounces Per Square Inch TVTS Tank Vent Test Stand
kg.m kilogram-meter OZ Ounces VAC Vacuum
Lb. Pound NS Not Shown (on drawing) WLV Weight Loaded Valve
Table 7: LIST OF FIBERGLASS RESINS AVAILABLE FOR VALVE BODY CONSTRUCTION:
Resin Name Manufacturer Max. Temp.
Epoxy Vinyl Ester
Resin #411-45
Epoxy Vinyl Ester
Resin #470-36
Furan Great Lakes Chemical 250o F Often specified where corrosion resistance to both solvents & acids is
Hetron 922 Ashland Chemical 225o F. Excellent resistance to acids, alkalis, hypochlorites and many solvents.
Chlorendic
Polyester 197-3
Hetron 800 Ashland Chemical 250o F. Furan resin; excellent resistance to strong alkalis and acids containing
1. General temperature limitation; consult factory for specific service.
2. In some services, max. temperature is 350
Dow Chemical Co. 210o F Consult factory or Dow Plastics’ “Chemical Resistance & Engineering
Dow Chemical Co. 250o F 2 Consult factory or Dow Plastics “Chemical Resistance & Engineering
Ashland Chemical 220o F. Consult factory or Ashland Chemicals’ “Chlorendic Polyester & Aropol
o
F. – 400o F.
1
Comments
Guide” for detailed information related to specific service
recommendations.
Guide” for detailed information related to specific service
recommendations.
required; Consult “QuaCorrResin Catalyst Systems Media Guide.”
Consult factory or Ashland Chemicals’ “Chlorendic Polyester & Aropol
Resin Selection Guide.”
Resin Selection Guide.”
chlorinated organics. Not suitable for oxidizing chemicals; do not use
with chromic or nitric acids, peroxides and hypochlorites.
14
The nameplate on the Valve contains the Model Number, Serial Number, set pressures and flow capacity at a
specified over-pressure. The Model Number contains additional information about materials of construction, soft
goods and options. The following chart will assist in relating the Model Number to the characteristics of your valve:
MODEL SIZE MATERIAL OPTIONS
----- ------ -------------
1200A 02" Pallet Z = Special Options
1220A 03" Seat O = No Specials
1260A 04" Body
1300A 06" S = Spacer
1360A 08" 6 = 411-45 (Note 1) O = No Specials
2300A 10" 7 = Furan
1760A 12" Z = Special
SEAT MATERIAL
B = Buna-N
T = Fluoropolymer
V = FKM
Z = Special
Notes:
1. Epoxy Vinyl Ester Resin 411-45 is standard; 470-36 is available (specify as Z = 470-36 Epoxy Vinyl Ester Resin).
2. Pallet Assemblies include standard Alloy C276 stems unless setting can’t be achieved with a lighter material.
EXAMPLE: 1200A-02-666-TOO indicates a 2" Model 1200A with 411-45 Epoxy Vinyl Ester Resin
body, seat & pallet assembly, Fluoropolymer seat diaphragms, Alloy C276 internal fasteners, 316
SS external fasteners and no special options.
PRODUCT LIMITED WARRANTY
A. Seller warrants that products which are manufactured
by Seller, are manufactured in accordance with
published specifications and free from defects in
materials and/or workmanship for a period of (12)
twelve months. Seller, at its option, will repair or
replace any products returned intact to the factory,
transportation charges prepaid, which Seller, upon
inspection, shall determine to be defective in material
and/or workmanship. The foregoing shall constitute the
sole remedy for any breach of Seller's warranty.
B. THERE ARE NO UNDERSTANDINGS,
AGREEMENTS, REPRESENTATIONS, OR
WARRANTIES, EXPRESS OR IMPLIED, (INCLUDING
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE REGARDING PRODUCTS)
UNLESS SPECIFIED IN THE SALES CONTRACT .
THIS CONTRACT STATES THE ENTIRE
OBLIGATION OF SELLER.
Seller makes no warranties, either express or implied,
except as provided herein, including
without limitation thereof, warranties as to marketability,
merchantability, for a particular purpose or use, or
against infringement of any patent of products. In no
event shall Seller be liable for any direct, incidental or
consequential damages of any nature, or losses or
expenses resulting from any defective new product or
the use of any such product, including any damages for
loss of time, inconvenience, or loss of use of any such
product.
C. The original Manufacturer shall be solely responsible
for the design, development, supply, production, and
performance of its products hereunder, and the
protection of its trade name or names, if any. It
assumes no responsibility, for products modified or
changed in any way by its agent or customer. Any
such modifications or changes to products sold by
Seller hereunder shall make the product limited
warranty null and void.
D. The Manufacturer shall be under no obligation to
manufacture, sell, or supply, or to continue to
manufacture, sell or supply any of the Products.
15
TABLE 5 - Maximum Vacuum Settings with Resin Encapsulated Lead Weights
Valve Size OSI IN WC mbar
2” 28 48.4
3” 32 55.4
4” 32 55.4
6”
8”
10”
12”
121
138
138
WARNING: Table 5 is based on limiting the dimensions of the pallet weight to ensure that the valve will
achieve rated flow capacity. For most valves, a lead weight is molded integral with the pallet. DO NOT add
additional weight to the pallet assembly without consulting the factory as pallet lift could be restricted. Pallet
lift restriction can cause the tank to be over-pressured to achieve the valves’ rated flow capacity.
Size FRP/Hast Min. Set PVDF Min. Set FRP/Hast Min. Set PVDF Min. Set
2” KPAP02_6 1.63 OSI KPAP0224 0.51 OSI
3” KPAP03_6 KPAP0324
4” KPAP04_6 KPAP0424
6” KPAP06_6 KPAP0624
8” KPAP08_6 KPAP0824
10” KPAP10_6 KPAP1024
12” KPAP12_6 KPAP1224
Size FRP/Hast Min. Set PVDF Min. Set FRP/Hast Min. Set PVDF Min. Set
2” KPAP026
3”
4”
6”
8”
10”
12”
Pressure Vacuum
Pressure Vacuum
16
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