Features 1、Used in fluid systems to prevent reverse flow of fluids or in pneumatic systems to prevent reverse flow of compressed air. 2、Resistance to weak acid and weak base, temperature resistance up to 100 ° C, pressure resistance. 3、This one way check valve is convenient for replacing the broken one. 4、Made of high quality plastic material, good stability and durability. 5、Convenient to use and easy to install, great for connection. Specification Condition: 100% Brand New Item Type: Check Valve Size: Approx. 10mm / 0.4in Total Length: Approx. 53mm / 2.1in Temperature Resistance: 100 ° C Opening Pressure: 0.015MPA (0.15 Kg Water Pressure) Reverse Back Pressure: 1.0MPA (10 Kg Water Pressure) Package List 2 x Check Valve