Universal check valve designed for industrial installations, can be used for air, gases, water, chemicals, petrochemical products, etc., considering the chemical resistance of the valve material. The valve must be installed according to the flow direction indicated on the body, in a horizontal position. Maximum constant working pressure across the full temperature range. Body material: brass (up to 4″), bronze (5″ and 6″). Disc: brass. Connection: BSP female thread. Operating temperature: from -10°C to +90°C.