{"product_id":"conrader-srv530-asme-high-flow-relief-valve","title":"Conrader SRV530 ASME Relief Valve, 250 PSI, 1\/2\" MNPT, 970 SCFM","description":"\u003cp\u003eConrader SRV530, the high flow ASME relief that goes on the two biggest vessels on the system: the top of the solvent tank and the top of the recovery vessel. $273.32.\u003c\/p\u003e\n\u003cp\u003eThe reason is flow, not pressure. Those two vessels hold the largest volumes on the system and in an emergency they have to dump that volume fast. A valve sized for a material column will not do it.\u003c\/p\u003e\n\n\u003ch3\u003eThe short version\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSet pressure: 250 psi, factory set. Spring range 171 to 259 psi\u003c\/li\u003e\n\u003cli\u003eFlow: 970 SCFM at set pressure, flow factor 3.35\u003c\/li\u003e\n\u003cli\u003eConnection: 1\/2 in MNPT, mounted off a 3\/4 in top cap connection with a tee\u003c\/li\u003e\n\u003cli\u003eTemperature: -15 F to 400 F (-26 C to 204 C). Not a cryogenic valve\u003c\/li\u003e\n\u003cli\u003eBrass body, 17-7 stainless spring, Viton seat\u003c\/li\u003e\n\u003cli\u003eStamps: ASME, U stamp and National Board\u003c\/li\u003e\n\u003cli\u003eFigures from 3P Certz engineering report ECR-250902-R0, Appendix A\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRead this before you fit one\u003c\/h3\u003e\n\u003cp\u003eThe temperature rating is -15 F to 400 F, which is -26 C to 204 C, on a Viton seat. That is the manufacturer figure as bound into our certification report, and in that report this valve is identified as the component that sets the minimum allowable temperature for the assemblies it is fitted to.\u003c\/p\u003e\n\u003cp\u003eIt goes where it goes because the vapour space at the top of a solvent tank or recovery vessel runs warmer than the jacketed wall. If you are putting a relief somewhere genuinely cold, order a cryogenic CRV instead.\u003c\/p\u003e\n\n\u003ch3\u003eWhere it mounts\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePort available\u003c\/th\u003e\n\u003cth\u003eWhat to fit\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\/4 in top cap connection\u003c\/td\u003e\n\u003ctd\u003eOne SRV530 on a tee\u003c\/td\u003e\n\u003ctd\u003e970 SCFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo 3\/4 in connection\u003c\/td\u003e\n\u003ctd\u003eTwo SRV390, one per 3\/8 in port, each on a tee\u003c\/td\u003e\n\u003ctd\u003e449 SCFM each, 898 SCFM total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA single 3\/8 in port\u003c\/td\u003e\n\u003ctd\u003eNot acceptable\u003c\/td\u003e\n\u003ctd\u003eWill not pass the required flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOne large valve or two small ones, never one small one. That is our certifying engineer's guidance, and the arithmetic above is why. The 8 in color remediation column takes the smaller SRV390.\u003c\/p\u003e\n\n\u003ch3\u003ePublished flow curve\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eInlet pressure\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e240 psi\u003c\/td\u003e\n\u003ctd\u003e933 SCFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 psi, at set\u003c\/td\u003e\n\u003ctd\u003e970 SCFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e260 psi\u003c\/td\u003e\n\u003ctd\u003e1007 SCFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e280 psi\u003c\/td\u003e\n\u003ctd\u003e1081 SCFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e300 psi and above\u003c\/td\u003e\n\u003ctd\u003e1154 SCFM, where it plateaus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFrom 3P Certz engineering report ECR-250902-R0.\u003c\/p\u003e\n\n\u003ch3\u003eFitment and service life\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFit it on: the solvent tank top and the recovery vessel top\u003c\/li\u003e\n\u003cli\u003eDo not fit it: anywhere that runs cold, or on a 3\/8 in port on its own\u003c\/li\u003e\n\u003cli\u003eReplace every 12 months. These should not be popping off regularly, or at all\u003c\/li\u003e\n\u003cli\u003eA valve that has vented is one to look at now, not at its next interval\u003c\/li\u003e\n\u003cli\u003eRelated: \u003ca href=\"\/blogs\/tech\/cryogenic-relief-valve-selection\"\u003eCryogenic relief valve selection\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe publish two and hold the rest back for ASME builds. If we are out, figure one to two weeks, and the longest we have ever seen is 12 weeks. Ships from Bend, Oregon.\u003c\/p\u003e","brand":"Conrader","offers":[{"title":"Default Title","offer_id":50870388195527,"sku":"NB-SRV530-250","price":273.32,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.nboler.com\/products\/conrader-srv530-asme-high-flow-relief-valve","provider":"N.B.Oler","version":"1.0","type":"link"}