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INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

WELKER RELIEF VALVE

MODELS

RV-1
RV-2
RV-2CP
RV-3

DRAWING NUMBERS

AD017A[ ]
AD018A[ ]
AD020A[ ]
AD282BO

MANUAL NUMBER

IOM-033

REVISION

Rev. F, 7/23/2019

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Содержание RV-1

Страница 1: ...INSTALLATION OPERATION AND MAINTENANCE MANUAL WELKER RELIEF VALVE MODELS RV 1 RV 2 RV 2CP RV 3 DRAWING NUMBERS AD017A AD018A AD020A AD282BO MANUAL NUMBER IOM 033 REVISION Rev F 7 23 2019 ...

Страница 2: ...rks of Welker Inc SAFETY 3 1 PRODUCT INFORMATION 4 1 1 Introduction 4 1 2 Product Description 4 1 3 Specifications 4 1 4 Equipment Diagrams 5 2 INSTALLATION OPERATION 7 2 1 Before You Begin 7 2 2 Setting and Installing the Relief RV 1 RV 2 and RV 3 7 2 3 Installing and Setting the Relief RV 2CP 8 3 MAINTENANCE 9 3 1 Before You Begin 9 3 2 Maintenance RV 1 10 3 3 Maintenance RV 2 11 3 4 Maintenance...

Страница 3: ...bed in this manual Correct installation and operation however are the responsibility of the end user Welkerreserves the right to make changes to this manualand allproducts in order to improve performance and reliability BEFORE YOU BEGIN Read these instructions completely and carefully IMPORTANT Save these instructions forlocal inspector s use IMPORTANT Observe all governing codes and ordinances No...

Страница 4: ...cifically designed to relieve moderate capacity instruments in the 0 200 psig range l The RV 2 is specifically designed to relieve low capacity instruments in the 0 1900 psig range l The RV 2CP is specifically designed to relieve low capacity cylinders in the 0 1900 psig range l The RV 3 is specifically designed to relieve high capacity instruments in the 0 200 psig range Welker may custom design ...

Страница 5: ...sig 344 barg Connections Inlet 20 UNF Outlet FNPT Spring Range 100 300 psig 6 20 barg 150 800 psig 10 55 barg 500 1000 psig 34 68 barg 900 1500 psig 62 103 barg 1900 psig 131 barg Standard Options Pre Set Relief NACE Compliance Table 4 RV 3 Specifications Materials of Construction 316 316L Stainless Steel PTFE and Viton Others Available Maximum Allowable Inlet Pressure 3600 psig 248 barg Connectio...

Страница 6: ...gure 2 RV 2 Diagram Figure 3 RV 2CP Diagram Figure 4 RV 3 Diagram 6 IOM 033 MODELS RV 1 RV 2 RV 2CP and RV 3 REV F 13839 West Bellfort Street Sugar Land TX 77498 welker com Service Department 281 491 2331 ...

Страница 7: ...o relieve A hissing sound will be audible Forthe RV 1and RV 2 use a hex key to screw the spring adjuster Forthe RV 3 use a Phillips head screwdriverto screw the spring adjuster 6 Screw the spring adjuster of the relief valve clockwise until the hissing sound stops and the relief valve obtains a positive shutoff Testing the Relief Valve 7 Set the regulator to a pressure slightly below the relief va...

Страница 8: ... key screw the spring adjuster of the RV 2CP clockwise to fully close the RV 2CP 7 Connect from the regulator to the cylinder end cap to which the RV 2CP is installed 8 Set the regulator to the desired pressure and then apply auxiliary gas through the regulator to the RV 2CP 9 Using a hex key screw the spring adjuster of the RV 2CP counterclockwise until pressure starts to relieve A hissing sound ...

Страница 9: ... lubricant from the seals as it may adversely affect analytical instrument results Forsample exposed seals Welkerrecommends non hydrocarbon based lubricants such as Krytox Fornon sample exposed seals Welkerrecommends eithernon hydrocarbon based lubricants orsilicone based lubricants such as Molykote 111 Afterthe seals are installed the outerdiameterof shafts and innerdiameterof cylinders may be lu...

Страница 10: ...cratches Replace as necessary 6 Unscrew the base from the spring housing and then replace the O ring on the base 7 Remove and replace the O ring in the spring housing side of the base DO NOT lubricate the O ring on which the ball seals Figure 5 1 8 Screw the base into the spring housing 9 Return the ball and spring to the spring housing The ball must rest on the O ring If the ball rests on the met...

Страница 11: ...ousing and then replace the O ring on the base 7 Remove and replace the O ring in the base side of the spring housing This small O ring may be picked out ora small burst of airmay be blown through the opposite end of the spring housing to release the seal DO NOT lubricate the O ring on which the poppet seals Figure 6 1 8 Screw the base into the spring housing 9 Return the poppet and spring to the ...

Страница 12: ...ce the O ring on the seat and then set the seat aside Take care not to misplace the seat 7 Remove and replace the O ring in the seat side of the spring housing This small O ring may be picked out ora small burst of airmay be blown through the opposite end of the spring housing to release the seal DO NOT lubricate the O ring on which the poppet seals Figure 7 1 8 Return the poppet and spring to the...

Страница 13: ...nscrew the poppet pin from the poppet body 6 Inspect the poppet for nicks and scratches Replace as necessary 7 Unscrew the poppet pin from the poppet body and then replace the O ring in the poppet body DO NOT lubricate the O ring on which the poppet body seals Figure 8 1 8 Screw the poppet pin into the poppet body 9 Return the poppet assembly and spring to the spring housing Ensure that the poppet...

Страница 14: ...nit l None Welker drawings and schematics suggested for use with this unit l Assembly Drawing AD017A RV 1 l Assembly Drawing AD018A RV 2 l Assembly Drawing AD020A RV 3 l Assembly Drawing AD282BO RV 2CP APPENDIX A REFERENCED OR ATTACHED DOCUMENTS 14 IOM 033 MODELS RV 1 RV 2 RV 2CP and RV 3 REV F 13839 West Bellfort Street Sugar Land TX 77498 welker com Service Department 281 491 2331 ...

Страница 15: ..._______________________________________ ____________________________________________________________________________________________________ ____________________________________________________________________________________________________ ____________________________________________________________________________________________________ _________________________________________________________...

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