Festo HGL Series Non-Return Check Valve, 1/8 in, Male/Female Inlet, Male/Female Outlet, Max 10 bar, HGL-1/8-B

The Festo HGL-1/8-B is a high-performance non-return check valve engineered for industrial pneumatic applications where reliable one-way flow control and pilot-actuated release are essential. This valve is part of the trusted Festo HGL series and is designed for seamless integration into production automation, tool stations, and pneumatic circuits requiring selective pressure release.

With a maximum operating pressure of 10 bar and a robust operating temperature range from -10°C to 60°C, the HGL-1/8-B ensures versatility and longevity even in demanding industrial environments. The unique configuration enables both male and female connections at the inlet and outlet ports, providing significant flexibility in system layout and minimizing the need for additional adapters or connectors.

The valve's construction combines multiple advanced materials, such as nitrile rubber (NBR) for sealing, nickel-plated brass, anodised aluminium alloy, die-cast zinc, and POM polymer, delivering superior corrosion resistance and mechanical durability. These features collectively ensure stable performance and extended service life, especially in environments where exposure to moisture or industrial contaminants is common.

The pilot-operated functionality allows the valve to control flow direction while enabling release of held pressure upon receipt of a secondary pilot signal. This capability is vital for holding pressure in actuators, valve manifolds, safety interlocks, and pneumatic jigs, supporting a variety of automation scenarios and sequence operations. The minimum operating pressure of 0.5 bar ensures the valve remains responsive even under low-pressure conditions typically found in precise actuation tasks.

Compliant with key international and industry standards, such as ISO 228-1, ISO 8573-1:2010, ISO 1179-1, and Festo standard FN 940070, as well as being RoHS compliant, this check valve meets global quality benchmarks for pneumatic components. Typical applications include retaining or releasing actuator positions in automated systems, enabling safe pressure release in safety circuits, and supporting efficient sequence control in pneumatic tool stations.

The Festo HGL-1/8-B non-return check valve excels in flexible installation, media compatibility with compressed air and standard pneumatic gases, and compact integration in industrial automation. Its innovative material mix and dual-gender port configuration support versatile, reliable operation across a wide array of pneumatic systems where reliability and performance are paramount.

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