We are manufacturing two types of Non - Return valves. V - 6301 is having metal to metal seat and is suitable for high pressure applications upto 200 Kg/cm2. V-6304 is having soft seat. It is suitable for maximum working pressure of 20Kg/cm2. We can supply Non return Valves for all gases. The material of construction depends on the nature of media / gas for which it is to be used.