Non Return Check Valve

A Non-Return Check Valve is a type of valve that allows fluid to flow in only one direction and automatically prevents backflow. It operates without any manual intervention, opening when fluid flows in the correct direction and closing when flow reverses. This protects pumps, compressors, and pipelines from damage caused by reverse flow and reduces the risk of water hammer.

Non-return check valves are widely used in water supply systems, sewage and wastewater pipelines, oil and gas industries, chemical plants, HVAC systems, and industrial process lines. They are available in various designs, including swing, lift, and tilting plate, as well as different materials, sizes, and pressure ratings, making them suitable for a wide range of applications.

Features

One-Way Flow Control – Allows fluid to flow in only one direction, preventing backflow.
Automatic Operation – Opens and closes without manual intervention.
Protects Equipment – Safeguards pumps, compressors, and pipelines from reverse flow damage.
Reduces Water Hammer – Minimizes pressure surges in the system.
Durable Construction – Made from high-quality materials for long-lasting performance.
Versatile Applications – Suitable for water, oil, gas, chemical, and industrial pipelines.

Technical Specifications

Valve Type: Non-Return Check Valve
Operation: Automatic, spring-assisted or gravity-operated
Body Material: Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel
Disc / Gate Material: Stainless Steel / Carbon Steel / Alloy Steel
Seat Material: Metal-to-Metal or Rubber-Lined (EPDM / NBR / PTFE)
End Connection: Flanged / Threaded / Wafer / Screwed
Pressure Rating: PN10 / PN16 / Class 150 / Class 300
Size Range: 15 mm to 1200 mm (½” to 48”)
Temperature Range: -10°C to 425°C (depending on material)
Applicable Media: Water, Oil, Gas, Steam, Chemicals
Design Standards: IS / ANSI / API / DIN / BS
Testing Standards: Hydrostatic and functional testing as per standards