Silicone valve is one of elastic slit product with controlling direction flow function for air or fluid. It is made of silicone or rubber material, which has elastic characteristics. Most silicone valves are designed with a line or cross slit on one side. Silicone valves include duckbill check valve, umbrella valve, mushroom valve, dispensing valves, pressure relief valve, dome valve, diaphragm valve, membrane valve and flap valve etc. They are also called rubber valve, one way valve, non-return valve, check valve, Slit Valve. Those silicone valves are widely used in medical device, health care, automotive, home appliance, water handle, aquarium,feeding pet, food process equipment etc.