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Festo
534659
One-way flow control valve GRLA-1/8-QB-5/16-U
The Festo industrial component part number 534659 is an exhaust air flow control non-return valve featuring a QB-5/16 pneumatic connection 1, a 1/8 NPT pneumatic connection 2, and a manual slotted screw adjusting element for screw-in mounting with an external thread. Constructed with a nickel-plated brass screwed plug weighing 0.77 oz, it delivers a standard nominal flow rate of 37.6 cfm in the flow control direction and operates within a pressure range of -13.8 psi to 116 psi across an ambient temperature range of 32 °F to 140 °F using compressed air as per ISO 8573-1:2010 [7:4:4]. 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
- 534659
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 534659.
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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
- QB-5/16
- Pneumatic connection 2
- 1/8 NPT
- Actuation type
- Manual
- Adjusting element
- Slotted screw
- Type of mounting
- Screw-in | With external thread
- Standard nominal ow rate in ow control direction
- 37.6 cfm
- Standard nominal ow rate in non-return direction
- 28.9 cfm...38.4 cfm
- Ambient temperature
- 32 °F...140 °F
- Mounting position
- Any
- Operating pressure for entire temperature range
- -13.8 psi...116 psi
- Standard ow rate in ow control direction 6 -> 0 bar
- 60.6 cfm
- Standard ow rate in non-return direction at 6 -> 0 bar
- 60.6 cfm...62.8 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
- 5.2 ft-lbf
- Product weight
- 0.77 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 534659. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.