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Festo
540359
One-way flow control valve GRLA-1/8-QS-8-B-20
The Festo 540359 is a manual one-way flow control valve for exhaust air featuring a G1/8 pneumatic connection and a slotted head screw adjusting element. Constructed with a wrought aluminum alloy screw-in stud and weighing 18 g, this component operates within a working pressure range of 0.2 to 10 bar and an ambient temperature of -10 to 60 °C. It delivers a standard nominal flow rate of 650 l/min in the flow control direction and 600 to 750 l/min in the non-return direction using filtered compressed air with 40 µm filtration. Submit the exact part number, quantity, and application requirements for a quote.
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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
- 540359
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 540359.
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
- One-way flow control function for exhaust air
- Pneumatic connection, port
- 2 G1/8
- Type of actuation
- manual
- Adjusting element
- Slotted head screw
- Mounting type
- Threaded
- Standard nominal flow rate in flow control direction
- 650 l/min
- Standard nominal flow rate in non-return direction
- 600 ... 750 l/min
- Working pressure
- 0.2 ... 10 bar
- Ambient temperature
- -10 ... 60 °C
- Operating medium
- Filtered, unlubricated compressed air, 40 µm filtration | Filtered, lubricated compressed air, 40 µm filtration
- Assembly position
- Any
- Standard flow rate in direction of flow control: 6 -> 0 bar
- 1,080 l/min
- Standard flow rate in blocked direction: 6 -> 0 bar
- 800 ... 1250 l/min
- Storage temperature
- -10 ... 40 °C
- Medium temperature
- -10 ... 60 °C
- Max. tightening torque
- 4 Nm
- Permissible actuation moment, regulating screw
- 0.4 Nm
- Product weight
- 18 g
- Container size
- 20
- Materials information for screw-in stud
- Wrought Aluminum alloy
- Materials note
- Conforms to RoHS
- Materials information for seals
- NBR | TPE-U(PU)
- Release ring material data
- POM
- Regulating screw material data
- Brass
- Swivel joint material data
- PBT-reinforced
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 540359. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.