... Ensure, 100% Tested 3.Good after-sell service 4.Certification:2008 Check Valve,One way Valve,female check Valve1.Material:Stainless steel 304 or ... welcomePneumatic Check valve, One way, KA Series, Port size 1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1 ... .8MPaAmbient Temperature-10~55’CResponse Time0.03sLife(Ten Thousand)>=150 Pneumatic One Way Check Valve KA-15