Rubber disc check valve

    Rubber flap check valve, also known as check valve, one-way valve or return valve, is mainly composed of valve body, valve cover and rubber flap. The design of this valve enables it to effectively prevent the reverse flow of media in the pipeline system, thereby protecting pumps and other equipment from damage caused by water hammer effects. Rubber flaps are usually made of stainless steel structure steel plates, steel bars, and reinforced nylon cloth as substrates, with an outer layer covered with rubber. This structure not only ensures good sealing performance, but also helps to extend the service life of the valve.

Application scenarios

• Rubber flap check valve is widely used in the pipeline outlet of water supply and drainage system(HDPE drainage pipe，hdpe water supply pipe）, petroleum, chemical industry and other industrial sectors. They can be installed at the pump outlet to prevent backflow, or on the bypass pipe of the inlet and outlet pipe of the reservoir to prevent the pool water from flowing back into the water supply system. These valves are generally suitable for cleaning media and are not suitable for media containing solid particles and large viscosity.

Advantages and Characteristics

• The advantages of rubber flap check valves include low head loss, less accumulation of debris, and easy maintenance. Due to its simple structure, besides the valve body and cover, there is only one movable elastic valve disc inside, which helps simplify maintenance and replacement processes. In addition, the design of the valve disc places it above the liquid after opening, reducing the possibility of wear and failure.

Technical parameters of rubber flap check valve

• The main technical parameters of rubber flap check valves include nominal pressure, shell test pressure, sealing test pressure, and applicable temperature. For example, the nominal pressure of HC44X series is usually 1.0MPa and 1.6MPa, the shell test pressure is 1.5MPa and 2.4MPa respectively, the sealing test pressure is 1.1MPa and 1.76MPa, and the applicable temperature does not exceed 80 ℃. These parameters determine the performance of rubber flap check valves under different operating conditions.