GR-QS-6193969

Overview of Festo GR-QS-6

The Festo GR-QS-6 is a one-way flow control valve designed for precise regulation in pneumatic systems. Engineered to provide controlled throttling and reliable non-return function, this model is well-suited for industrial environments requiring consistent compressed air management. The valve features 6 mm QS push-in fittings for both inlet and outlet ports, making integration straightforward for tubing installations. Its compact housing is manufactured from reinforced polyamide (PA), ensuring a lightweight yet durable build. With a knurled screw for easy adjustment of flow rates, the GR-QS-6 can be panel-mounted or installed using through-holes, offering versatility in application setups. Compliance with ISO 8573-1:2010 and RoHS standards makes it a trusted choice for modern automation systems that value both performance and material safety.

Key Features of Festo GR-QS-6

• One-way flow control and non-return operation for pneumatic systems
• QS-6 push-in connections for 6 mm tube compatibility
• Knurled screw for manual flow adjustment
• Operating pressure range from 0.2 to 10 bar
• Ambient and media temperature range: -10°C to 60°C
• ATEX certifications for explosion risk zones 1, 2, 21, and 22
• RoHS-compliant materials (NBR seals, POM release ring)
• Compact design weighing 22 grams
• Suitable for lubricated and non-lubricated operation

Technical Specs of GR-QS-6

• Valve function: Flow control non-return
• Pneumatic connections: QS-6 (6 mm tube)
• Standard nominal flow rate (throttling): 245 l/min
• Standard nominal flow rate (non-return): 430 l/min
• Operating pressure: 0.2–10 bar
• Ambient/media temperature: -10°C to +60°C
• Housing: Reinforced polyamide (PA)
• Seals: NBR (nitrile rubber)
• Release ring: POM
• Adjusting screw: High-alloy steel
• Product weight: 22 g
• Mounting: Front panel or through-hole with accessories
• Certifications: RoHS, ISO8573-1:2010, ATEX zones 1/2/21/22

Applications / Use Case

The Festo GR-QS-6 is widely used in automated pneumatic circuits for machinery and manufacturing lines where controlled airflow and reliable backflow prevention are critical. This model ensures that single-acting or double-acting pneumatic cylinders operate smoothly, by allowing adjustable speed and pressure regulation in one direction while reliably blocking reverse flow. Commonly deployed in packaging equipment, assembly robots, and conveyor systems, the GR-QS-6 supports precise actuation timing and helps protect sensitive devices from surges and leaks. Its ATEX certification makes it suitable for hazardous areas, including chemical processing and painting booths, where compliance with explosion protection requirements is mandatory. Engineers select this valve for its consistent performance, easy installation, and adaptability to a range of compressed air media scenarios, facilitating efficient and safe automation operations.

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