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Author Topic: what is the threads on wilesco d22 boiler  (Read 165 times)

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Re: what is the threads on wilesco d22 boiler
« on: January 07, 2026, 06:51:29 pm »
Assuming you have whistle with chain? That is M6x1 and Safety valve M6x0.75

Curious, why do you have to run on air?
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