Legris Non Return Valve 10 Bar, Tube 4 mm Inlet Female/Male/Female Outlet, Polymer/Metal Body 7996 04 00

Legris 7996 04 00 Non Return Valve is a precision-engineered pneumatic valve intended for preventing reverse flow in industrial air systems. This model operates at a maximum pressure of 10 bar and accepts 4 mm diameter tube connections for both inlet and outlet, supporting seamless integration in compact pneumatic circuitry.

Engineered from a blend of technical polymer, metal, stainless steel, polyethylene, aluminium, nickel plated brass, sintered bronze, and nitrile rubber (NBR), the valve offers high durability and chemical resistance. The polymer body makes it lightweight and suitable for diverse mounting positions, while metal inserts enhance strength and pressure stability.

The non return function is achieved through advanced V ring technology, which ensures positive sealing and eliminates the need for an internal spring, providing reliable performance even in environments subject to vibration or pressure fluctuations. Cracking pressure of 0.3 bar ensures that flow begins smoothly, while minimum operating pressure is set at 1 bar. The product operates safely and efficiently between 0°C and 70°C, offering versatility for various pneumatic, automation, and manufacturing processes.

Connection gender flexibility includes female, male/female, and male ports for both inlet and outlet, making it adaptable for both new installations and retrofits. The valve's design supports robust system protection against unwanted backflow, potentially preventing contamination or pressure loss in critical lines.

This model is certified under 2002/95/EC (RoHS), 1907/2006 (REACH), and 97/23/EC (PED), meeting industry best practices for safety, reliability, and environmental compliance. Typical use cases include manufacturing automation, laboratory pneumatic systems, HVAC installations, and water treatment plants where pneumatic control and flow assurance are crucial.

With lightweight construction and compact form factor, it is easy to install and maintain, minimizing downtime in industrial settings. Its ability to operate in a range of temperatures and pressures makes it highly dependable for continuous or batch operation in demanding industrial environments.

Discover more non return valves and pneumatic fittings from Legris and explore the full range of industrial valve solutions in the EnvMart Non Return Valves category.