Information:
Fisher Valve, Class #150, 24 inches.
Condition:
The control valve is stuck and leaking; the cage is scratched, damaging the plug and causing it to jam.
Actions Taken:
MOG’s Solutions:
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Removed the valve and inspected; found significant rust on the valve body;
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Cleaned the valve body, plug, cage, and seat;
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Machined the surface of the plug’s gasket and the O-ring surrounding the plug;
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Reassembled the valve and performed testing according to FCI 10-2 standards.