ASME Safety Valve
ASME Safety Valve
(OP)
ASME Application Question
I have an ASME Safety Valve, 100 psi, rated for steam service, with an ASME "V" stamping. Can I use this valve on a Fired Power Steam Boiler, (Sect 1)?
I have an ASME Safety Valve, 100 psi, rated for steam service, with an ASME "V" stamping. Can I use this valve on a Fired Power Steam Boiler, (Sect 1)?





RE: ASME Safety Valve
RE: ASME Safety Valve
RE: ASME Safety Valve
To answer your first question, the "V" stamp is the Section I stamp for BOILER safety valves, so yes you can use it on any Sec I Boiler as long as it meets the needed pressure and capacity, which you said it does.
Now for "HV" and "UV" stamped valves, that's a different story. They are relief valves, not safety valves, manufactured under Section IV HEATING Boilers and Section VIII, Div. 1 PRESSURE VESSELS respectively. These valves are generally designed for liquid service, not gas or vapour. The major difference being they open more as the pressure builds where as the "V" stamped valves "pop" to full opening at their set pressure.
Now having said all that you could probably use a "V" stamped valve on a Pressure Vessel or a Heating Boiler as long as the set pressure and capacity is a match. I'd dig through the ASME codes first to check though.
Hope that helps.
RE: ASME Safety Valve