Butterfly valve manufacturing matters

2020-07-22View Original

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BUTTERFLY VALVE DFS, GB/T 12221, GB/T 12238, HG/T 20592(A), GB/T 12229-WCB, 13Cr+NBR, PN16, CONCENTRIC, RF, Gear, NBR LINED. I would like to ask: based on the description above, can I understand that the sealing surface of the butterfly valve is 13Cr+NBR? But what should I do regarding the NBR LINED part mentioned later? Should the entire butterfly plate be lined with rubber, or is it sufficient to line only the valve seat? Seek a group online

Reply #22020-08-10

The structure described here should involve the valve body being covered with NBR, but are there any specific requirements regarding the hardness, strength, and other properties of the NBR?

Reply #32020-12-17

BUTTERFLY VALVE DFS – what does DFS mean?

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Butterfly valve manufacturing matters

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