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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
534681
One-way flow control valve GR-QB-3/16-U
The Festo 534681 is an industrial component featuring a flow control non-return function with QB-3/16 pneumatic connections on both ports and manual actuation via a slotted screw. This part provides a standard nominal flow rate of 13,9 cfm in the flow control direction, an operating pressure range of -13,8 psi to 116 psi, and is constructed with a PBT-reinforced housing and nickel-plated brass screwed plug. It operates with compressed air according to ISO 8573-1:2010 [7:4:4] within an ambient and medium temperature range of 32 °F to 140 °F, supporting line installation or through-hole mounting in any position. Submit the exact part number, quantity, and application requirements to request a quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
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
- 534681
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 534681.
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
- Flow control non-return function
- Pneumatic connection 1
- QB-3/16
- Pneumatic connection 2
- QB-3/16
- Actuation type
- Manual
- Adjusting element
- Slotted screw
- Type of mounting
- Optionally: | Line installation | With through-hole
- Standard nominal flow rate in flow control direction
- 13,9 cfm
- Standard nominal flow rate in non-return direction
- 11,7 cfm...13,9 cfm
- Operating pressure
- -13,8 psi...116 psi
- Ambient temperature
- 0 °C...60 °C
- Housing material
- PBT-reinforced
- Mounting position
- Any
- Standard flow rate in flow control direction 6 -> 0 bar
- 23,8 cfm
- Standard flow rate in non-return direction at 6 -> 0 bar
- 21,5 cfm...22,9 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
- Product weight
- 1 oz
- Material of screwed plug
- Brass | Nickel-plated
- Note on materials
- RoHS-compliant
- Seals material
- NBR
- 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 534681. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.