Check Valve: A reverse-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 from various metal products, the material of check valves has now evolved into a variety of composite materials.

The gate is a one-way valve installed at the outlet of drainage pipes along rivers and canals. When the river or canal tide level exceeds the outlet opening and the pressure is greater than the internal pipe pressure, the gate panel automatically closes to prevent backflow of river or canal water into the drainage pipeline. The gates are available in various models, including suspended type, single-door/double-door, and energy-saving types.

The gate is composed of four parts: valve seat (body), valve plate, sealing ring, and hinge. It is designed for one-way water flow through circular and square outlets, featuring a tight structure and reliable operation. It requires no manual operation; the opening and closing force is derived from the water pressure source. The gate opens when the water pressure inside exceeds the pressure outside; it closes otherwise.
Applicable Media: Water, River Water, River, Sea Water, Domestic, Industrial Wastewater
Application Scope: Suitable for water conservancy systems, municipal wastewater treatment, urban flood control and drainage, sewage treatment plants, waterworks, and more.