Are there Different standards for valve & flanges? 1

[cranekiran]

Dear members,

I have a confusion albiet a silly one,but anyway here goes:-

Can we use a same standard for valve as well as drill standard?Are there any standards which specifies both valve as well as drill standards?Thanks in anticipation.

 

[cranekiran]

Dear members,

My question is meant only for Butterfly valves only,Thanks in anticipation.

 

[TD2K]

What do you mean by drill standards with respect to butterfly valves?

 

[cranekiran]

Thanks for your response TD2K,

What I meant was:-

Now for eg:- AWWA Standard is a valve standard and ANSI is a flange standard i.e you can have a butterfly valve with MULTIPLE drill(for flange connection) standards at a same time i.e ANSI,JIS5K,JIS10K but the valve is based on AWWA.My confusion here is who decides the final arrangement,the end user or the manufacturer?

 

[TD2K]

I'm still not clear what you mean by multiple drill standards. Does that mean you want some valves with ANSI 150 flanges, others with ANSI 300, others with JIS5K?

I don't have a copy of AWWA valve standards so this is purely my opinion. But, if the vendor is set up to supply you with different flange sets (ANSI,JIS5K,JIS10K), I doubt there would be any problems.

I'd pose the question directly to them.

 

[01101998]

You can always ask your vendor to provide thr flanged valves drillrd to the specific flange standard you are using.It is not a problem for the valve manufacturer when the valve design conditions and flange ratings are matching.

navnit

 

awwa has a standard for the flanges - geenrally slip-on. i guess the gentlemen is referring to the bcd and the # of bolts on the flange. im assuming that the service is for water - mostly this is the application for awwa valve/flange specs. details of the diffrent dimension of the flanges (for diffeerwrn rating and facing)per API, ASME, MSS and AWWA can be found in Tube Turns catalog.

 

[jandup]

No there are flange standards and that apply to all flanges. ASME B16.47, ASME B16.5, JIS 5 K, JIS 10 K, AWWA CLASS and then all the Din standards as well. I hope this answers your question. You have a Standard flange for a 3 Inch 150 LB pipe wich will comply to one of the standards as given. When you order it is important as you have a difference between your ASME B16.47 and B16.5 flange sizes.