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Question:

What do the D373W and D373H of the valve mean?

What do the D373W and D373H of the valve mean?

Answer:

Upstairs said yes, I have factory production, this butterfly valve.
Butterfly valve, worm drive for the folder inclined plate, H alloy steel lining, W for the valve body directly processing sealing surface.
Butterfly valve, worm drive for the folder inclined plate, H alloy steel lining, W for the valve body directly processing sealing surface.

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