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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
4565
One-way flow control valve GRF-PK-3
The Festo 4565 is an industrial component featuring a one-way flow control function with PK-3 pneumatic connections on both ports and a standard nominal flow rate of 45 l/min in both flow control and non-return directions. Constructed with a wrought aluminum alloy housing, a brass adjusting screw, and a knurled screw adjusting element, this 95 g unit operates at pressures from 0.5 bar to 8 bar within a temperature range of -10 °C to 60 °C. It supports mounting with a through-hole in any position using compressed air as per ISO 8573-1:2010 [7:-:-] with oil lubrication possible, and complies with VDMA24364-B1/B2-L LABS (PWIS) standards. Submit the exact part number, quantity, and application requirements for 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
- 4565
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 4565.
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 ow control function
- Pneumatic connection 1
- PK-3
- Pneumatic connection 2
- PK-3
- Adjusting element
- Knurled screw
- Type of mounting
- With through-hole
- Standard nominal ow rate in ow control direction
- 45 l/min
- Standard nominal ow rate in non-return direction
- 45 l/min
- Operating pressure
- 0.5 bar...8 bar
- Ambient temperature
- -10 °C...60 °C
- Housing material
- Wrought aluminum alloy
- Mounting position
- Any
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:-:-]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Temperature of medium
- -10 °C...60 °C
- Product weight
- 95 g
- Material of adjusting screw
- Brass
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 4565. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.