CNG LNG Cryogenic piston lifting check valve

A CNG LNG cryogenic piston lifting check valve is designed for ultra-low temperature applications, typically found in the storage and transport of liquefied gases like LNG and CNG. This valve operates automatically, allowing flow in one direction and preventing backflow by means of a vertically moving piston. When fluid flows in the correct direction, pressure lifts the piston to open the valve; if flow reverses, the piston drops to seal the passage instantly. Built with cryogenic-grade materials, the valve maintains tight sealing and structural integrity at extremely low temperatures. It is commonly installed in cryogenic pipelines, storage tanks, and vaporizers, ensuring safe and efficient system operation. The piston design provides precise response to flow changes, while the robust construction ensures long service life and reliable backflow prevention even under severe cryogenic conditions.