... -sell service 4.Certification:2008 Check Valve,One way Valve,female check Valve1.Material:Stainless steel 304 or 3162.Nominal pressure:3000-6000PSI3.Aplicable temperature ... .Applicable Medium:Oil,gas,water or etc6.Technics:Forged7.Place of origin-Zhejiang,China(mainland)8.OEM orders are welcomePneumatic Check valve, One ...