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Summary of Contents for VSI AWWA C504
- Page 1 VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES VSI Waterworks 24” - 120” AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES INSTALLATION, OPERATION AND MAINTENANCE MANUAL Publica� on: 504-108 MAR 2022...
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Page 2: Table Of Contents
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES TABLE OF CONTENTS SCOPE WARNINGS GENERAL UNLOADING INSPECTION PRIOR TO INSTALLATION STORAGE INSTALLATION TESTING OPERATION MAINTENANCE REPAIR SEAT REPLACEMENT & ADJUSTMENT TROUBLESHOOTING 504-108 © 2022 VSI Waterworks LLC 03-22... -
Page 3: Scope
RECEIVING: The replaceable seat AWWA C504 Bu� erfl y valve is rugged and will be packaged to provide protec� on during most shipping incidents, however care should be taken to inspect the valve on receipt for any possible shipping damage. Inspec� on should be performed as soon as prac�... -
Page 4: General
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES SECTION 1 - GENERAL Bu� erfl y valves are a signifi cant component of any water distribu� on system or treatment plant opera� on. Valve failure caused by faulty installa� on, improper opera� on, or maintenance in these systems could result in damage, down�... -
Page 5: Testing
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES sta� c load and allows iden� fi ca� on of piping fi t problems during installa� on and easier removal of the valve for maintenance. Piping considera� ons should include allowable fl ange loadings, thermal expansion and contrac�... -
Page 6: Operation
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES SECTION 7 - OPERATION Sec. 7.1 Pressure ratings Do not permit the use or opera� on of any valve at pressures above the rated pressure of the valve. Sec. 7.2 Torque limits Do not exceed 300 �... -
Page 7: Repair
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES SECTION 9 - PACKING REPAIR Sec. 9.1 Packing Adjustment If leakage occurs at stem seal packing � ghten each gland bolt one quarter turn and observe leakage. If leakage is s�... -
Page 8: Seat Replacement & Adjustment
SECTION 10 - SEAT REPLACEMENT AND ADJUSTMENT The VSI AWWA C504 Replaceable Seat Bu� erfl y Valves have a fi eld replaceable seat that can be replaced while the valve is in the open or closed posi� on, and s� ll installed in the pipeline. To replace the seat, you will need the following: a new seat, new ring segments, studs, and an NSF 61 approved lubricant (such as Dow Corning 111 or Phoenix 505). -
Page 9: Troubleshooting
INSTALLATION, OPERATION AND MAINTENANCE VSI AWWA C504 REPLACEABLE SEAT BUTTERFLY VALVES SECTION 11 - TROUBLESHOOTING Condi� on Possible Cause Correc� ve Ac� on Packing leakage Packing is loose Adjust packing Packing is worn Replace packing Flange leakage Flange bolts not Tighten fl...
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