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Festo
540662
One-way flow control valve GRLSA-1/4-QS-8
The Festo 540662 is an industrial component featuring an exhaust air flow control non-return function with a QS-8 pneumatic connection 1 and a G1/4 pneumatic connection 2. It utilizes a manual actuation type with an internal hex adjusting element and screw-in mounting, supporting an operating pressure range of 0.2 bar to 10 bar across an ambient temperature of -10 °C to 60 °C. The unit accommodates compressed air media as per ISO 8573-1:2010 [7:4:4] with possible oil lubrication, providing a standard nominal flow rate in the flow control direction of 0 l/min to 450 l/min and 390 l/min to 570 l/min in the non-return direction. Please submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 540662
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 540662.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Valve function
- Exhaust air ow control non-return function
- Pneumatic connection 1
- QS-8
- Pneumatic connection 2
- G1/4
- Actuation type
- Manual
- Adjusting element
- Internal hex
- Type of mounting
- Screw-in
- Standard nominal ow rate in ow control direction
- 0 l/min...450 l/min
- Standard nominal ow rate in non-return direction
- 390 l/min...570 l/min
- Ambient temperature
- -10 °C...60 °C
- Mounting position
- Any
- Operating pressure for entire temperature range
- 0.2 bar...10 bar
- Standard ow rate in ow control direction 6 -> 0 bar
- 0 l/min...700 l/min
- Standard ow rate in non-return direction at 6 -> 0 bar
- 820 l/min...930 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- LABS (PWIS) conformity
- VDMA24364-B2-L
- Cleanroom suitability, measured according to ISO 14644-14
- Class 4 according to ISO 14644-1
- Storage temperature
- -10 °C...40 °C
- Temperature of medium
- -10 °C...60 °C
- Nominal tightening torque
- 11 Nm
- Tolerance for nominal tightening torque
- ±10%
- Product weight
- 34.8 g
- Seals material
- NBR
- Hollow bolt material
- Wrought aluminum alloy | Anodized
- Releasing ring material
- POM
- Material of adjusting screw
- PA-reinforced
- Swivel joint material
- Die-cast zinc
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 540662. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.