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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
8031331
Stem actuated valve VMEF-STC-M32-M-G18
The Festo 8031331 is a 20 mm wide mechanical industrial component featuring a monostable, closed 3/2-way valve function with a plate seat structural design and soft sealing principle. It delivers a normal nominal flow rate of 750 l/min through G1/8 pneumatic working ports, operating within a pressure range of 0.35 MPa to 1 MPa (3.5 bar to 10 bar) and a maximum switching frequency of 3 Hz. This piloted unit utilizes internal pilot air supply with a zero overlap lap and includes a mechanical spring reset method for any mounting position, though it must not be used as a mechanical stop. Submit the exact part number, quantity, and application requirements to receive 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
- 8031331
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8031331.
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
- 3/2-way, closed, monostable
- Actuation type
- Mechanical
- Width
- 20 mm
- Normal nominal ow rate (normalized to DIN 1343)
- 750 l/min
- Pneumatic working port
- G1/8
- Operating pressure
- 0.35 MPa...1 MPa | 3.5 bar...10 bar
- Structural design
- Plate seat
- Reset method
- Mechanical spring
- Nominal width
- 5.6 mm
- Application note
- Do not use as mechanical stop
- Sealing principle
- Soft
- Mounting position
- Any
- Type of control
- Piloted
- Pilot air supply port
- Internal
- Flow direction
- Reversible
- Lap
- Zero overlap
- Pilot pressure MPa
- 0.35 MPa...1 MPa
- Pilot pressure
- 3.5 bar...10 bar
- Pilot pressure psi
- 50.75 psi...145 psi
- Max. switching frequency
- 3 Hz
- Explosion prevention and protection
- Zone 1 (ATEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 22 (ATEX)
- 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)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Actuating force
- 14 N
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 8031331. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.