Check ValveCheck Valve-3000PSIG Characteristics: End connection available with JPE tube end,BSPT or NPT female & male thread. Various fixed cracking pressure springs, range from 1 to 25psig. O-ring ensures leak proof shut off. Back stopped poppet minimizes spring stress. Features: Inline check valve stops reversed flow in order to protect instructions. Body material in Stainless Steel 316. Max. allowed working pressure 3000psig(206 bar). With NBR O-ring. 100% factory tested. Product Name: Check Valve - JPE Tube End. Check Valve - JPE Male Thread. Check Valve - JPE Female Thread.