The flap valve is installed at the end of the drainage pipe and has the function of preventing downstream water from backfilling. The shape of flap valve is round and square. The material of the door is traditionally a variety of metal products, and now it has been developed into a variety of composite materials, which can be customized according to user needs.

Advantages (compared to traditional gates)
      1. More energy saving (such as opening and closing doors without manual external force)
      2. Long service life (simple mechanical structure, easy maintenance)
      3. Easy to use (switch without manual operation)

Scope of application
      Medium: Water, river water, river water, sea water, domestic, industrial sewage
      Scope: Applicable to water conservancy system, municipal sewage, urban flood control and drainage, sewage treatment plant, water works, etc.

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