https://patents.google.com/patent/CN201615230U/en
CN201615230U - All-welded elastic metal seal butterfly valve - Google Patents
The utility model relates to an all-welded elastic metal seal butterfly valve which comprises a valve body, a valve plate and an elastic metal seal ring...
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https://jiefavalves.en.made-in-china.com/product/NXkmbiqAnhpe/China-Stainless-Steel-Flanged-Multi-Level-Metal-Seal-Butterfly-Valve.html
Stainless Steel Flanged Multi-Level Metal Seal Butterfly Valve - Butterfly Valve and Flanged...
Stainless Steel Flanged Multi-Level Metal Seal Butterfly Valve, Find Details and Price about Butterfly Valve Flanged Butterfly Valve from Stainless Steel...
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