An NRV check valve, or Non-Return Valve, is a mechanical device that allows fluid to flow in only one direction, preventing reverse flow in piping systems. These valves are essential in maintaining flow direction and system efficiency in water, chemical, oil, and gas pipelines across various industries.
NRV check valves automatically close when fluid tries to reverse, using either gravity, a spring mechanism, or back pressure. This feature protects pumps, compressors, and pipelines from damage caused by reverse flow or back-pressure surges. The valve operates without manual intervention, making it ideal for continuous and unmanned systems.
. Size Range: 15 mm to 300 mm . Pressure Rating: PN10 to PN40. Material: Cast Iron, Cast Steel, Stainless Steel, Brass. Connection Type: Screwed, Flanged, Wafer End. Working Temperature: -10°C to +200°C . Flow Direction: Unidirectional
Specifications vary based on process media and line pressure.
. Water supply and treatment plants. Chemical and pharmaceutical pipelines. Oil and gas distribution lines. HVAC and fire protection systems. Steam and condensate recovery systems
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