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-FAQs-

Get answers to multiple frequently asked questions

Valve stem rotation is not flexible or stuck

Valve stem rotation is not flexible or stuck, the main reasons are: packing pressure is too tight; The haniwa was not properly packed in the haniwa boxes; Stem and stem bushing using the same material or improper material selection; Insufficient clearance between stem and bushing; The stem is bent; The surface roughness of thread is not required.

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The valve body and the valve cover are leaking

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The valve body and the valve cover are leaking