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Butterfly valve connection
- Renatas
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15 years 2 weeks ago - 15 years 2 weeks ago #7529 by Renatas
Butterfly valve connection was created by Renatas
Good day,
please could someone answer me if it's possible to connect wafer type butterfly valve (DN250) between slip on raised face flanges without welding neck (DIN86030).
please could someone answer me if it's possible to connect wafer type butterfly valve (DN250) between slip on raised face flanges without welding neck (DIN86030).
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- Jop
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15 years 2 weeks ago - 15 years 2 weeks ago #5065 by Jop
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Replied by Jop on topic Re: Butterfly valve connection
Without any other information the answer is yes.
The ID of the pipe is normally the same or larger than the OD of the Butterfly disk.
You should check to be sure if you know the actual valve you will (or have) purchase (d).
The ID of the pipe is normally the same or larger than the OD of the Butterfly disk.
You should check to be sure if you know the actual valve you will (or have) purchase (d).
Do it once and Do it Right
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- Renatas
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15 years 2 weeks ago - 15 years 2 weeks ago #5069 by Renatas
Replied by Renatas on topic Re: Butterfly valve connection
the problem is not of rotating disc, the problem is of leakage. This valves has bonded liner, and in data sheet producer recommending to use welding neck flanges to get bigger area of connection between flange and valve (bonded liner), and if we will use flanges without welding neck this area will be smaller of welding seam, but is it possible of this smaller connection area we will have leakage? i'm afraid our workshop can't center right these valves. Hope You understand my problem.
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15 years 2 weeks ago - 15 years 2 weeks ago #5072 by Jop
Do it once and Do it Right
Replied by Jop on topic Re: Butterfly valve connection
Remember I wrote "Without any other information the answer is yes."
Now you have given "other information" so the answer is now No!
The lining of valves such as this do have a habit of "creeping" out of place. So you MUST follow the requirements of the manufacturer.
Now you have given "other information" so the answer is now No!
The lining of valves such as this do have a habit of "creeping" out of place. So you MUST follow the requirements of the manufacturer.
Do it once and Do it Right
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15 years 2 weeks ago - 15 years 2 weeks ago #5073 by Renatas
Replied by Renatas on topic Re: Butterfly valve connection
Thank You for answer. Then i'm afraid we will need to reweld flanges.
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15 years 2 weeks ago - 15 years 2 weeks ago #5076 by 11echo
Replied by 11echo on topic Re: Butterfly valve connection
Renatas ...I have afew questions for you. You did indicated this is a 250# butterfly valve? ...SO this takes a "full face" gasket?? ...NOT a raised face gasket? AND what size are we talking about?
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