Ball Valve Flanged RF 900 Rating To Be used for Temperature 593DegC

[SabirPakistani]

Dear ALl,
I have one case where we need ball valve flanged RF.900# Material Body & Stem A182 F22 Cl.3, Ball & Seat A182 F22 Cl.3+Stellite6 (Weldoverlay process).
Can i use above flanged valve at temperature 593DegC since ASME B16.34 Table for mtl group 1.10 restricts up to 538DegC.
Please guide me Thanks

 

[SabirPakistani]

I have one case where we need ball valve flanged RF.900# Material Body & Stem A182 F22 Cl.3, Ball & Seat A182 F22 Cl.3+Stellite6 (Weldoverlay process).
Can i use above flanged valve at temprature 593DegC since ASME B16.34 Table for mtl group 1.10 restricts up to 538DegC.
Please guide me Thanks

 

[hsbcn]

Can you offer further process data, like pressure and medium?

Corrosion resistant, exotic alloy valves from The Alloy Valve Stockist in Barcelona, Spain [URL unfurl="true"]http://valvestockist.com[/url]

 

[gerhardl]

In my career I have several times been asked the question if a valve could be used even if the process data, normally pressure, temperature or a combination of both is 'just a little bit above' the given standard.

The answer is absolutely NO! All juridical, economical commercial and insurance consequences lies on the party breaking the standard, even if the construction technically could well bear the conditions.

This is the reason it is called a standard.

 

[Luxeal]

For this temperature, SW or BW end-connections are preferred. Hub connexion could be a good alternative.

Luxeal