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How to remove the copper sleeve of a valve actuator

2018-02-06View Original

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This is the actuator for a valve; the valve cannot be opened, and the handwheel will not rotate properly. During disassembly, it was found that the copper sleeve of the actuator must have seized with the valve stem. After removing the cover, it was impossible to proceed with further disassembly because the copper sleeve would not turn. Now we want to replace the copper sleeve – could anyone from Zonghai help us figure out a way to disassemble it?

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