Check Valve, Stainless Steel, 1/4 NPT female in, 1/4 NPT male out, 8,000 psi working pressure. Flows one way from the female port to the male port. Valve will open at approximately 2 - 3 psi. Provided Oxy-clean with viton inner o-ring. Previous Oxy-clean part #45282OX. Order #46215OX for repair kit.