Product Overview
The FESTO HGL-1/8-B is a pneumatic pilot-operated check valve engineered to provide reliable load holding and leak-free blocking of compressed air in industrial automation systems. Manufactured by Festo, a global leader in pneumatic and electric automation technology, this valve combines a spring-loaded check function with pneumatic pilot actuation, allowing controlled flow in one direction while enabling reverse flow when a pilot pressure signal is applied. The HGL-1/8-B is designed for precise integration into pneumatic circuits where secure load retention, controlled actuator positioning, and prevention of unintended cylinder drift are critical. Its compact body and G1/8 threaded ports make it ideal for space-constrained manifold and inline installations.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Pilot-Operated Check Valve |
| Model Designation | HGL-1/8-B |
| Manufacturer | Festo |
| Port Connection | G1/8 (1/8″ BSPP) threaded ports |
| Operating Pressure | Standard pneumatic range (up to 10 bar typical) |
| Pilot Pressure Ratio | Approx. 1:1 pilot-to-working pressure ratio for reliable opening |
| Mounting & Connection | Inline or manifold mounting via G1/8 ports |
| Sealing Principle | Soft-seated poppet for bubble-tight shut-off |
Engineering Features & Advantages
- Precision Performance: The pilot-operated poppet design ensures leak-free blocking of flow in the non-actuated direction, preventing cylinder drift and maintaining actuator position even under sustained load.
- Controlled Reverse Flow: Applying pilot pressure at the designated port positively opens the valve, allowing full reverse flow for controlled retraction or lowering of pneumatic actuators.
- Industrial Reliability: Built for continuous operation in demanding automation environments, with robust internal components and high cycle life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with Festo original specifications, ensuring drop-in replacement without modification.
- Compact Integration: The G1/8 port size and compact housing allow easy installation in tight manifold assemblies and modular pneumatic valve terminals.
Typical Industrial Applications
The FESTO HGL-1/8-B is widely used in pneumatic automation systems requiring secure load holding and controlled motion, including: packaging and assembly machinery, material handling and lifting equipment, CNC machine tool clamping circuits, and general industrial automation where prevention of actuator drift is essential. It is also suitable for use in press and forming applications, as well as in safety-related circuits where reliable blocking of compressed air is required.
PRODUCT IMAGES
FESTO HGL-1/8-B Pneumatic Pilot-Operated Check Valve
âš¡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine FESTO HGL-1/8-B Pilot-Operated Check Valve. This Germany-made pneumatic/hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.