Forged Alloy 825 Valves
Forged Alloy 825 Valves
(OP)
My service is Hydrogen, Wet & Sour. The client's pipe specifications call for B564 (Forged) N08825 Valves, I have sizes up to 10" and 1500# class. Vendors tell me that they cannot supply to B564, they quote A494 (Cast) instead.
ASME B16.34 does not give a pressure rating for A494 N08825 material. In fact N08825 is not listed as a cast material,the only materials per A494 are Hastelloy B & C.
Are larger valves (6") available in N08825 per B564? Surely we are not the only ones in this service.
Thank you.
ASME B16.34 does not give a pressure rating for A494 N08825 material. In fact N08825 is not listed as a cast material,the only materials per A494 are Hastelloy B & C.
Are larger valves (6") available in N08825 per B564? Surely we are not the only ones in this service.
Thank you.





RE: Forged Alloy 825 Valves
RE: Forged Alloy 825 Valves
RE: Forged Alloy 825 Valves
yes I know that A494 N08826 is not a good substitute.
RE: Forged Alloy 825 Valves
Luxeal
RE: Forged Alloy 825 Valves
I need 2", 3", 4" & 6" 1500# RF Globe Valve, ASTM B 564 N08825 per ASME B16.34. The client piping specification for this service calls for valves as large as 24" in this material, so far, I have not been able to find a manufacturer who can supply a valve larger than 4" in B564 N08825 (Forged) - the only offerings have been for castings per ASTM A 494 in Hastelloy. Cast N08825 is not listed in B16.34.
Also, the only offerings that I have had for the smaller valves have been for bodies machined out of bar stock. Acceptable, but not forged.
Thank you,
RE: Forged Alloy 825 Valves
Luxeal
RE: Forged Alloy 825 Valves
Good luck,
VRF
RE: Forged Alloy 825 Valves