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Table of Contents
- 1 Table of Contents
- 2 Introduction
- 3 Design, Function & Operation
- 4 General Safety Instructions
- 5 Safety Warnings
- 6 Inspection and Installation
- 7 Preventive Maintenance
- 8 Recommended Spare Parts
- 9 Disassembly
- 10 Testing and Setting Procedure
- 11 Model Information
- 12 Product Limited Warranty
- Download this manual
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Table of Contents
Related Manuals for Groth 1301A
Summary of Contents for Groth 1301A
- Page 1 Installation, Operation and Maintenance Manual for Pressure/Vacuum Relief Valves (Spring Loaded) Models 1201B, 1202B 1203A, 1221B, 1222B, 1223A, 1261A, 1301A, 1361A, 2301A IOM-1201B Rev. D 12541 Ref. ID: 96337 © 2010 Groth Corporation...
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Page 2: Table Of Contents
TABLE OF CONTENTS: INTRODUCTION: DESIGN, FUNCTION & OPERATION GENERAL SAFETY INSTRUCTIONS SAFETY WARNINGS INSPECTION AND INSTALLATION TABLE 1: STUD SELECTION TABLE 2: BOLT TORQUE CHART PREVENTIVE MAINTENANCE RECOMMENDED SPARE PARTS TABLE 3: PART NUMBER FOR RECOMMENDED SOFT GOOD SPARE PARTS TABLE 4: VALVE DIAPHRAGM USAGE, BASED ON SETTING TABLE 5: REPLACEMENT CARBON STEEL SPRING PART NUMBERS TABLE 6: REPLACEMENT STAINLESS STEEL PART NUMBERS... -
Page 3: Introduction
INTRODUCTION: The Groth Spring-Loaded Pressure / Vacuum Relief Valves (PV) are designed to protect tanks from damage caused by overpressure or over vacuum conditions. By containing product vapors PV valves reduce costly product evaporation losses due to normal tank breathing. In addition, atmospheric contamination is reduced by containing product vapors until tank pressure reaches the set pressure of the PV valve. -
Page 4: Design, Function & Operation
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: ... -
Page 5: General Safety Instructions
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. -
Page 6: Inspection And Installation
Groth's spring loaded PV Valves are designed to provide tank protection for set-pressures to 15 PSIG and vacuum to 12 PSIG. The valves provide full rated flow capacity at 100% over-pressure. Consult factory for performance under other conditions. -
Page 7: Preventive Maintenance
PREVENTIVE 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 properly maintained and accurately set. - Page 8 Replacement Springs To order original Groth replacement springs, find the desired pressure range from the tables below and select the corresponding part number for the valve size: TABLE 5: REPLACEMENT CARBON STEEL SPRING PART NUMBERS Carbon Steel Spring Part Numbers (*) Range 2"...
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Page 9: Disassembly
DISASSEMBLY WEIGHT LOADED PALLET ASSEMBLY 1. Loosen and remove all hex nuts and washers. 2. Remove the vent cover or weatherhood from the valve body. 3. Remove the pallet assembly by firmly grasping the stem and lifting up. Depending on the pressure/vacuum settings of the particular valve, weight plates may have been added to the pallet assembly. - Page 10 "D" measured in Step 2; proceed to Step 11. 10. If the spring is replaced, use only original springs supplied by Groth Corporation and follow the Procedure illustrated below: 11.
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Page 11: Testing And Setting Procedure
TESTING AND SETTING PROCEDURE Before starting to reassemble a valve, calculate the nominal pressure and vacuum pallet assembly weights, as shown in Example 1. Weigh all pallet assemblies to ensure the correct settings. Record pallet assembly weight(s) on factory test report. - Page 12 Groth Model 1201B Pressure/Vacuum Relief Valve...
- Page 13 ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Body Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS Spring Hex Bolt 316 SS Lock Washer 316SS Support Ring...
- Page 14 Groth Model 1221B Pressure/Vacuum Relief Valve...
- Page 15 ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Outlet Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS Spring Stud 316 SS Lock Washer 316SS Hex Nut 316 SS...
- Page 16 Groth Model 1261A Pressure/Vacuum Relief Valve ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Outlet Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS...
- Page 17 Groth Model 1301A Vacuum Relief Valve ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Body Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS...
- Page 18 Groth Model 1361A Vacuum Relief Valve ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Outlet Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS...
- Page 19 Groth Model 2301A Pressure Relief Valve ITEM DESCRIPTION CARBON ALUMINUM STAINLESS Base Aluminum 316 SS Spring Chamber Aluminum 316 SS Spring Button 316 SS Adjustment Screw Gasket, Cap * 316 SS Hex Jam Nut Stem 316 SS 316 SS 316 SS...
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Page 20: Model Information
Any such modifications or changes to products sold by Groth hereunder shall make the product limited warranty null and void. Groth shall be under no obligation to manufacture, sell or supply, or to continue to manufacture, sell, or supply any of the products.
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