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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
540358
One-way flow control valve GRLA-1/8-QS-6-B-20
The Festo 540358 is an industrial component featuring a one-way flow control function for exhaust air and a G1/8 pneumatic connection port. Actuated manually via a slotted head screw with a permissible regulating moment of 0.4 Nm, this threaded-mount unit operates within a working pressure range of 0.2 to 10 bar and an ambient temperature range of -10 to 60 °C. It delivers a standard nominal flow rate of 520 l/min in the flow control direction and accommodates filtered unlubricated or lubricated compressed air with 40 µm filtration. Request a quote by submitting the exact part number, quantity, and application requirements.
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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
- 540358
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 540358.
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
- 520 l/min
- Standard nominal flow rate in non-return direction
- 400 ... 550 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
- 720 l/min
- Standard flow rate in blocked direction: 6 -> 0 bar
- 600 ... 750 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 540358. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.