Flanged ball valve

2018-10-23View Original

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Why are the length dimensions of the ball valves mentioned in Part 3, Valves, of the fifth edition of the latest Design Manual for the Installation of Process Piping in Petrochemical Plants different from those specified in GB/T 12221? Shouldn’t this be a standard national ball valve? I would appreciate some guidance from experts, thank you!

Reply #22018-10-23

What are the valve standards for the petrochemical industry? Please give me some advice. Thank you!

Reply #32018-10-23

The valves specified in SH/T 3059 are also national standard valves for reference; thank you!

Reply #42018-10-24

Please take a look; the valves come in long and short versions

Reply #52018-11-06

This is the old standard length per the Ministry of Machinery standard JB 1686-1975

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Flanged ball valve

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