Npauj npaim check valve yog dav siv hauv dej, dej khib nyiab thiab dej hiav txwv. Raws li qhov nruab nrab thiab qhov kub thiab txias, peb tuaj yeem xaiv cov khoom sib txawv. Xws li CI, DI, WCB, SS304, SS316, 2205, 2507, Bronze, Aluminium. Lub micro-resistance qeeb-kaw daim tshev valve tsis tsuas yog tiv thaiv qhov rov qab ntws ntawm cov xov xwm, tab sis kuj tseem txwv cov dej rauj puas tsuaj thiab ua kom muaj kev nyab xeeb ntawm kev siv cov kav dej.