very high set pressure ~43500psi very high set pressure ~43500psi gelsi (Chemical) (OP) 6 Mar 18 16:08 Hi, I'm looking for manufacturers of PSV with set 43500 psi, can you help me? Tx RE: very high set pressure ~43500psi avalveman (Mechanical) 7 Mar 18 09:23 That pressure is extreme for SRV. Can you advise more on the application? Service conditions etc. Per ISO, only the term Safety Valve is used regardless of application or design. RE: very high set pressure ~43500psi MortenA (Petroleum) 7 Mar 18 09:40 3000 barg? Trying to OPP the sun? RE: very high set pressure ~43500psi MortenA (Petroleum) 7 Mar 18 09:41 Seriously it think you should look for a bursting disc - these guys (i dont know them) says up to 5,000 barg: https://www.rembe.com/fileadmin/produkte/prozesssi... RE: very high set pressure ~43500psi Latexman (Chemical) 7 Mar 18 12:40 Are you making diamonds from coal? Good luck, Latexman To a ChE, the glass is always full - 1/2 air and 1/2 water. RE: very high set pressure ~43500psi met11 (Chemical) 7 Mar 18 15:58 AutoClave RVP series will be your friend, or a rupture disc as MortenA pointed out. We've bought these in the past: http://www.autoclave.com/products/relief_valves/rv... RE: very high set pressure ~43500psi gelsi (Chemical) (OP) 8 Mar 18 13:49 it's a petrochemical application... met11, RVP seems a right but... "All models are designed primarily for thermal expansion or low volume relief applications at high pressures where flow is not critical" my case isn't thermal expansion RE: very high set pressure ~43500psi met11 (Chemical) 8 Mar 18 16:33 The relief valve won't really care what your case is. What is the relieving scenario? You're going to get an enormous amount of flow at 43,500 psi regardless of how big the valve is. In the past at our company, we've used the RVP series with the published areas by Autoclave, and a discharge coefficient of 0.14. I think the K was back-calculated based on some of the published flow curves in the literature. Unfortunately I don't know of any other valves that can go up to that pressure. I checked the normal players (Leser, Farris, Crosby, Flowsafe, Consolidated) and none of them even get close to those pressures. Most Autoclaves that I've seen operating in those pressure ranges always have an extruder-style rupture disc, or very small safety head. RE: very high set pressure ~43500psi moltenmetal (Chemical) 9 Mar 18 19:51 The only process I know of which runs that high is high pressure polyethylene- basically a bomb which you use to make a product. Amazing that it works at all... RE: very high set pressure ~43500psi ChemE08 (Chemical) 18 May 18 14:16 You may want to look at Oilgear. https://oilgear.com/product/wnc/ . They tend to be custom user specific builds. Autoclave are also a known option but generally capacity is limited compared to the Oilgear ones.