W21.8 Threaded Pipe Diameter Selection and Flange Selection

2017-04-30View Original

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I searched for GB 15383-2011 \"Connection forms and dimensions of gas cylinder valve outlets\", and found that for SO2, the thread specification for the gas cylinder outlet connection is W21.8-14. What does this mean, according to the members of this forum? How should the corresponding pipes and flanges be selected?

Reply #22017-04-30

W21.8-14: Outer diameter of the thread is 21.8, inner diameter is 14.

Reply #32017-04-30

I checked the table for pipe flanges: 3/4 corresponds to DN20, 1 corresponds to DN1, and W21.8 corresponds to 7/8. There is simply no flange that matches this size

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W21.8 Threaded Pipe Diameter Selection and Flange Selection

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