Confirm the exact configuration
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
3720
One-way flow control valve GR-1/2
The Festo 3720 is a one-way flow control valve featuring internal thread G1/2 pneumatic connections on both ports and a knurled screw adjusting element. Built with a die-cast zinc housing, brass adjusting screw, and galvanized steel nut, this component supports an operating pressure range of 0.01 MPa to 1 MPa and a standard nominal flow rate of 1620 l/min in the flow control direction. It delivers a nominal flow rate of 2760 l/min in the non-return direction while operating within an ambient and medium temperature range of -20 °C to 75 °C. Certified for ATEX Zone 1, 2, 21, and 22 environments, this RoHS-compliant unit weighs 517 g and accommodates compressed air media as per ISO 8573-1:2010 [7:-:-] with optional oil lubrication. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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
- 3720
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 3720.
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
- Internal thread G1/2
- Pneumatic connection 2
- Internal thread G1/2
- Adjusting element
- Knurled screw
- Type of mounting
- With through-hole
- Standard nominal ow rate in ow control direction
- 1620 l/min
- Standard nominal ow rate in non-return direction
- 2760 l/min
- Operating pressure
- 0.01 MPa...1 MPa | 0.1 bar...10 bar | 1.45 psi...145 psi
- Ambient temperature
- -20 °C...75 °C
- Housing material
- Die-cast zinc
- Explosion prevention and protection
- Observe the information on the certicate | Zone 1 (ATEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 22 (ATEX)
- 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
- -20 °C...75 °C
- Product weight
- 517 g
- Note on materials
- RoHS compliant
- Material of adjusting screw
- Brass
- Nut material
- Steel, galvanized
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 3720. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.