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Festo
534660
One-way flow control valve GRLA-1/4-QB-3/16-U
The Festo 534660 is an industrial component featuring an exhaust air flow control non-return function with a QB-3/16 pneumatic connection 1 and a 1/4 NPT pneumatic connection 2. This manually actuated unit utilizes a slotted screw adjusting element and screw-in external thread mounting, constructed with a nickel-plated brass screwed plug weighing 1.2 oz. It delivers a standard nominal flow rate of 42.6 cfm in the flow control direction and operates within a temperature range of 32 °F to 140 °F at pressures from -13.8 psi to 116 psi using ISO 8573-1:2010 [7:4:4] compressed air. 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
- 534660
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 534660.
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 flow control non-return function
- Pneumatic connection 1
- QB-3/16
- Pneumatic connection 2
- 1/4 NPT
- Actuation type
- Manual
- Adjusting element
- Slotted screw
- Type of mounting
- Screw-in | With external thread
- Standard nominal flow rate in flow control direction
- 42,6 cfm
- Standard nominal flow rate in non-return direction
- 32,8 cfm...43,5 cfm
- Ambient temperature
- 32 °F...140 °F
- Mounting position
- Any
- Operating pressure for entire temperature range
- -13,8 psi...116 psi
- Standard flow rate in flow control direction 6 -> 0 bar
- 61,1 cfm
- Standard flow rate in non-return direction at 6 -> 0 bar
- 61,1 cfm...63,7 cfm
- 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 zone III
- Temperature of medium
- 32 °F...140 °F
- Max. tightening torque
- 8,9 ft-lbf
- Product weight
- 1,2 oz
- Material of screwed plug
- Brass | Nickel-plated
- Note on materials
- RoHS-compliant
- Seals material
- NBR
- Hollow bolt material
- Brass | Nickel-plated
- Releasing ring material
- POM
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 534660. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.