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FLAP VALVE (also called a check valve, swing valve, or clapper valve) is a mechanical device designed to control fluid flow in one direction, preventing backflow.

Core Function

• Allows fluid (liquid or gas) to pass through freely in the desired direction.

• Automatically closes when flow reverses, relying on fluid pressure and gravity for operation.

• Eliminates backflow-related issues like system damage, pressure loss, or contamination.

Key Features & Advantages

• Simple structure with few moving parts, ensuring reliable performance and low maintenance.

• No external power required – operates passively via fluid dynamics.

• Wide compatibility with different fluids (water, oil, gas) and operating conditions (temperature, pressure).

• Compact design, suitable for installation in pipelines, tanks, pumps, and drainage systems.

Common Applications

• Water and wastewater treatment plants (sewage systems, drainage lines).

• Industrial pipelines (chemical processing, oil and gas, HVAC systems).

• Marine equipment (ship ballast tanks, bilge systems).

• Residential and commercial plumbing (preventing backflow in water supply lines).

• Pumps and compressors (protecting equipment from reverse flow damage).