Doubts about valve pressure
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Hello everyone, I’ve run into a problem recently – I’m not sure what pressure rating the valve I need to purchase should have. Could you please help me figure this out? This globe valve is specified to have a design pressure of 15 bar and an operating pressure of 2 bar, but there’s also a valve rating of 800#. Does this mean that a pressure of 800 LB is required? Logically, it should only be 600 and 900 LB – can someone help me figure this out?
Your 800 has nothing to do with pressure, right?
Actually, when I looked at the flow diagrams, I saw that the pressures were all high – basically 600 LBS. So I think what’s specified later is correct, but the design pressure specified earlier conflicts with this value; I’m not sure about it.
If that’s the case, it’s easy to understand – just buy one with a valve pressure rating of 900LB
What kind of valve is this? If it’s a ball valve, with such a small diameter, it won’t be expensive even for high pressures
It’s not a matter of status; the contract must meet the user’s requirements – not just 1 or 2 stop valves, but many. On a per-unit basis, it has a significant impact on costs.
You need to discuss this with the user; my colleagues in the factory don’t have a unified opinion either
SW, socket weld, CL800
What I know is: it is a ball globe valve with a socket weld connection, DN25 (pressure to be determined), made of material A182-F316, featuring a handwheel, a stem-mounted design, and a valve cover secured by bolts. To avoid everyone guessing randomly
Search on the forum~ Why do American-standard valves have a pressure rating of 800 lb? – Powered by Discuz! http://bbs.hcbbs.com/thread-928648-1-1.html On page 11, the 800 LB rating is based on API STD 602 for steel gate valves, globe valves, and check valves used in oil and gas applications, with classes of 150, 300, 600, 900, 1500, and 2500. The rating is also determined according to ASME B16.34 for valves with flange, threaded, or welded connections