valve minimum wall thickness
valve minimum wall thickness
(OP)
Hi,
I am trying to calculate the minimum wall thickness required for a check valve. I am using the formula from ASME B31.1-1995 edition, "minimum wall thickness for a staight pipe under internal pressure", Paragrah 104.1.2.
I want to verify some valve designs done in the past.
Is this the correct formula, if not please point me in the right direction.
Thanks in advance,
Dwyer
I am trying to calculate the minimum wall thickness required for a check valve. I am using the formula from ASME B31.1-1995 edition, "minimum wall thickness for a staight pipe under internal pressure", Paragrah 104.1.2.
I want to verify some valve designs done in the past.
Is this the correct formula, if not please point me in the right direction.
Thanks in advance,
Dwyer





RE: valve minimum wall thickness
See DIN 2840. It give you some usefull information.
RE: valve minimum wall thickness
See DIN 2840. It gives you some usefull information.
RE: valve minimum wall thickness
You will find that the table has a margin of safety that is much higher than your calculations for pipe. This is mainly due to the table being designed around the weakest of acceptable materials.
RE: valve minimum wall thickness
However, I do not have access to the DIN 2840 standard or even the ASME B16.34 code.
Are these available online or is it possible to send me a copy of the section that pertains to valve minimum wall thickness.
Thanks,
Dwyer
RE: valve minimum wall thickness
RE: valve minimum wall thickness
I'm sorry I don't know where you can find standards without buying them, but try to search the web: although it is not legal, may be someone put something on the net...!
Bye, 'NGL
RE: valve minimum wall thickness
I guess almost all answers are already given.But then still here goes:-
1)ASME B 16.34 is the best design & testing standard for the developing a valve from scratch.It covers all the revelant materials .Apart from pressure/temp. ratings,min. wall thickness it gives us the NPS vs inside dia & inspection procedures in the valve field.CERTAINLY A MUST HAVE FOR A VALVE ENGINEER.
2)API-600 also gives the min. wall thk & the inside dia's.But this is only for gate valves.It is a good standard for wedge type of gate valves & pressure seal gate valves.
Bye!