| 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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