Check Valve for Pipe: A check valve installed at the end of drainage pipes, designed to prevent backflow of external water. The check valve is mainly composed of four parts: valve seat, valve plate, water seal ring, and hinge. It comes in two shapes: round and square. Traditionally made of various metal products, the material of check valves has now evolved into a variety of composite materials.

The flap door has the following advantages over traditional gates: 1. More energy-efficient (as it does not require manual force to open and close the door) 2. Longer lifespan (simple mechanical structure, easy to maintain) 3. Easy to use (no manual operation required)

Operating Principle

The flap gate is composed of four parts: valve seat (body), valve plate, sealing ring, and hinge. It is designed for circular and square outlets, used only for one-way water flow, with a tight structure and reliable operation. It does not require manual operation; the opening and closing force comes from the water pressure source. The flap opens when the water pressure inside is greater than the pressure outside; conversely, it closes. Suitable Media: Water, river water, lake water, seawater, domestic, industrial wastewater. Application Range: Suitable for hydraulic systems, municipal wastewater treatment, urban flood prevention and drainage, sewage treatment plants, waterworks, etc.