1/4 Male x Female Per Sqaure Inch Check with VitonThe 1 4 Male x Female 500 Pounds per Square Inch Check with Viton is a one way inline valve designed to allow fluid or gas to flow in a single direction while preventing backflow. It is rated for 500 PSI and features a Viton (FKM) seal, which offers superior chemical resistance, high temperature durability, and excellent sealing performance. This valve is commonly used in hydraulic, pneumatic, fuel, gas, and refrigeration systems where reliable