Valve Design Standard

[pingmi]

Hi,

Please let me know different Codes / Standards used for design of Pressure Reducing Valves?

Thanks in advance.

 

[JLSeagull]

Please narrow the question. Thousands of standards exist. International and US standards differ.

The AWWA standards for the water works industry are different than the API standards for oil and gas industry such as API Spec 6D and Std 598. A recent post includes the MSS standards. ASME publishes many applicable standards. Start with B16.34 and B16.10.

Perhaps you could also clarify which pressure reducing valves you are specifically addressing. Examples could be self-contained pressure regulators, control valves, pressure safety relief valves or other valves that control pressure downstream. ISA publishes control valve standards. PIP publishes valve standards. UL 842 is a standard for vlammable fluid valves.

ASTM publishes many material standards and a few related to valves.

 

[pingmi]

JLSeagull,

Sorry for the late response.
Basically I wanted to know international standard (preferably ASME)to calculate Valve shell wall thickness, crotch area calculations etc.

I recently got information that EN10516-2 deals with Industrial vales-Shell design strength. Calculation method for steel valve shells.
Do we have equivalent ASME standard on this?

 

[Raaden]

I guess you meant EN 12516-2 and the only ASME standard I know about that at least handles crotch calculations simliarly is ASME Section III, Section 1, NB (paragraph NB-3545). Oh and ASME B16.34 appendix V uses a similar method for limited class valves, but that is only for <= 2½" valves.

EN 12516-1 (Tabulation method for steel valve shells) on the other hand is very similar to ASME B16.34 (I would even call it a copy-paste job)

 

[pingmi]

Raaden,

Yes, you are right. It should be EN 12516-1 instead of EN10516.. sorry for the typographical mistake.

ASME Sec III deals with Nuclear application & hence have stringent requirements as applicable.

Would it be okay to calculate shell wall thicknesses etc per ASME SEC VIII DIV I as there is no other equivalent ASME standard to EN 12516-1? (also my Valve body material is conforming to ASTM)

 

[Raaden]

Is there a problem designing the valve acc to ASME B16.34?

 

[pingmi]

Raaden,

Task in front of me to use ASME standards (as MOC conforms to ASTM std) and check if an existing Valve design (which is not as per ASME B16.34) is safe for given applications.

Another typical requirement is to evaluate an existing valve design as per PED requirements. If the MOC of Valve is as per ASTM then we need to use ASME standards for all the required calculations.. Pls advise.

 

[Raaden]

Would it be ok to do an EN design, but using ASTM materials? EN actually allows you to use some ASTM materials for valves (see EN 1503-2). Of course if there is also a PED requirement then you would still need a PMA for the material because of ASTM not being harmonized to PED.

If not, then I guess you can use ASME VIII Div 1 if the customer has no objections.