Related Manuals for Continental Disc Corporation Groth 1721B
Summary of Contents for Continental Disc Corporation Groth 1721B
- Page 1 Installation, Operation and Maintenance Manual for Spring Loaded Pressure/Vacuum Relief Valves Models 1721B, 1722B, 1723A, 1761A IOM-1721B Ref. ID: 95729 ©2010 Groth Corporation...
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Page 2: Table Of Contents
Page 2 of 19 TABLE OF CONTENTS I. INTRODUCTION II. DESIGN, FUNCTION & OPERATION 1. FIGURE 1 – TYPICAL TANK INSTALLATION III. GENERAL SAFETY INSTRUCTIONS IV. SAFETY WARNINGS V. INSPECTION AND INSTALLATION 1. TABLE 1 – STUD SELECTION 2. TABLE 2 – BOLT TORQUE CHART VI. -
Page 3: Introduction
Page 3 of 19 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
Page 4 of 19 DESIGN, FUNCTION & OPERATION Pressure Relief : As the pressure in the storage tank Vacuum Relief : As a vacuum is drawn on the increases the vacuum pallet is held shut. When the storage tank (for example, when fluid is being set pressure is reached the pressure pallet lifts and pumped out), the pressure pallet is held shut by tank relieves to the outlet pipe. -
Page 5: General Safety Instructions
Page 5 of 19 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
Page 6 of 19 INSPECTION AND INSTALLATION 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. -
Page 7: Preventative Maintenance
Page 7 of 19 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: Disassembly
Page 8 of 19 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 9 Page 9 of 19 SPRING LOADED PALLET ASSEMBLY 1. Remove cap and hex jam nut. 2. Carefully measure and record the distance from the top of the adjustment screw to the top of the spring chamber. (Dimension "D" - See Figure 3). 3.
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Page 10: Valve Testing Procedure
Page 10 of 19 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 11: Model Information
Page 11 of 19 MODEL INFORMATION 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... -
Page 12: Appendix A: Groth Model 1721B Pressure/Vacuum Relief Valve
Page 12 of 19 APPENDIX A: Groth Model 1721B Pressure/Vacuum Relief Valve... - Page 13 Page 13 of 19 Groth Model 1721B Pressure/Vacuum Relief Valve Bill of Material ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION CARBON STEEL 316 SS BODY CS (WCB) CF-8M (316 SS) NUT, HEX STUD PLUG, PIPE OUTLET CS (WCB) CF-8M (316 SS) STUD NUT, HEX WASHER, LOCK...
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Page 14: Appendix B: Groth Model 1722B Pressure/Vacuum Relief Valve
Page 14 of 19 APPENDIX B: Groth Model 1722B Pressure/Vacuum Relief Valve... - Page 15 Page 15 of 19 Groth Model 1722B Pressure/Vacuum Relief Valve Bill of Material ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION CARBON STEEL 316 SS BODY CS (GR. WCB) 316 SS(GR. CF8M) STUD HEX NUT LOCK WASHER PIPE PLUG 316 SS(GR. CF8M) OUTLET CS(GR.
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Page 16: Appendix C: Groth Model 1723A Pressure/Vacuum Relief Valve
Page 16 of 19 APPENDIX C: Groth Model 1723A Pressure/Vacuum Relief Valve... - Page 17 Page 17 of 19 Groth Model 1723A Pressure/Vacuum Relief Valve Bill of Material ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION CARBON STEEL 316 SS BODY CS (GR. WCB) 316 SS(GR. CF8M) STUD HEX NUT LOCK WASHER PIPE PLUG 316 SS OUTLET CS(GR.
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Page 18: Appendix D: Groth Model 1761A Pressure/Vacuum Relief Valve
Page 18 of 19 APPENDIX D: Groth Model 1761A Pressure/Vacuum Relief Valve... - Page 19 Page 19 of 19 Groth Model 1761A Pressure/Vacuum Relief Valve Bill of Material STANDARD MATERIALS OF CONSTRUCTION ITEM DESCRIPTION CARBON STL 316 SS OUTLET CS WCB CF-8M (316 SS) PLUG, PIPE 316 SS GASKET, COVER STUD NUT, HEX WASHER, LOCK CHAMBER, SPRING CS WCB CF-8M (316 SS)
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