8223994

Name: Festo 8223994 One-way flow control valve VFOE-LE-T-G18-Q4-F1A
Brand: Festo

One-way flow control valve VFOE-LE-T-G18-Q4-F1A

The Festo industrial component part number 8223994 features an exhaust air flow control non-return function with a QS-4 pneumatic connection 1 and a G1/8 pneumatic connection 2, actuated manually via a rotary knob with a latch in any mounting position. Constructed with a PBT housing and a 13 mm width across flats, this unit operates across a temperature range of -10 °C to 60 °C and an operating pressure of 0.02 MPa to 1 MPa (0.2 bar to 10 bar / 2.9 psi to 145 psi) using compressed air as per ISO 8573-1:2010 [7:4:4]. It supports ATEX explosion prevention and protection for Zones 1, 2, 21, and 22, while adhering to specific metal variant exclusions. Submit the exact part number, quantity, and application requirements to request a quote.

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Manufacturer: Festo
Part number: 8223994
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Technical Specifications

Valve function: Exhaust air ow control non-return function
Pneumatic connection 1: QS-4
Pneumatic connection 2: G1/8
Actuation type: Manual
Adjusting element: Rotary knob with latch
Type of mounting: Screw-in
Standard nominal ow rate in ow control direction: 150 l/min
Standard nominal ow rate in non-return direction: 90 l/min...150 l/min
Ambient temperature: -10 °C...60 °C
Housing material: PBT
Explosion prevention and protection: Observe the information on the certicate | Zone 1 (ATEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 22 (ATEX)
Mounting position: Any
Width across ats: 13 mm
Rotatability: 360 deg/continuous swiveling not permissible
Variants: Metals with copper, zinc or nickel by mass as main constituent are | excluded from use. Exceptions are nickel in steel, chemically nickel- | plated surfaces, printed circuit boards, cables, electrical plug connectors | and coils.
Operating pressure for entire temperature range: 0.02 MPa...1 MPa | 0.2 bar...10 bar | 2.9 psi...145 psi
Standard ow rate in ow control direction 6 -> 0 bar: 250 l/min
Standard ow rate in non-return direction at 6 -> 0 bar: 240 l/min...300 l/min
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)

Engineering context

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Our sourcing response is prepared against Festo 8223994. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.