Overhauling True Union Ball Valves
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| 1 True Union Ball Valve | 2 Removing the Valve Body | 3 Ready for Disassembly | 4 Valve Seal Removal |
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| True Union Ball Valves have been designed to be easy to service and repair. The valve can be overhauled without disconnecting the system piping connections. | To remove the valve body simply unscrew the two assembly nuts. | The valve body lifts out…ready for disassembly. The system piping connections are not disturbed. Inspect the two end connector o-rings on the valve body for damage as well as the sealing surface of the end connectors. | The valve seal retainer can be removed with a spanner wrench, a seal retainer tool available from FDPP or, more commonly, by using screwdrivers to turn the retainer out of the valve body as shown |
| 5 Inspect Seal | 6 Removing Ball | 7 Removing Valve Handle | 8 Closed Position |
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| Inspect the seal retainer o-ring for damage. | The ball can now be removed. Inspect for damage. | Next remove the valve handle, it’s a compression fit on the valve stem. A plastic mallet can be used…..or…… | The valve can be put in the closed position and the handle gently tapped on the end of a work bench. |
| 9 Pushing Down on Stem | 10 Removal | 11 Inspection | 12 Removing seals |
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| Pushing down on the stem forces it into the body….. | Where it can be removed | Inspect the two stem o-rings for damage. | Remove one of the two PTFE seats from the seal retainer. |
| 13 Removing Seals | 14 Replacing Seats | 15 Finishing Up | |
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| The other PTFE seat is removed from inside the valve body. | Inspect the seats for damage. While the valve is disassembled it’s always good practice to replace the seats and all o-rings no matter what their condition. | That’s all there is to it. Reverse the procedure to re-assemble the valve and put it back into service. |
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FACTORY DIRECT PIPELINE PRODUCTS, INC. Your Single Source for Industrial Filtration and Valve Products Copyright 2001-2008 |
phone: | 908.496.9020 x-302 | |
| fax: | 908.496.8080 | |||
| email: | fdpp@fdpp.com |