8157639

Name: Festo 8157639 One-way flow control valve VFOE-LE-T-R18-Q6-F1A
Brand: Festo

One-way flow control valve VFOE-LE-T-R18-Q6-F1A

The Festo 8157639 is an industrial component featuring an exhaust air flow control non-return function with a QS-6 pneumatic connection 1 and an R1/8 pneumatic connection 2. This unit utilizes manual actuation through a rotary knob with a latch, screw-in mounting, and a PBT housing with ATEX explosion protection for Zones 1, 2, 21, and 22. It delivers a standard nominal flow rate of 165 l/min in the flow control direction and an operating pressure range of 0.02 MPa to 1 MPa across an ambient temperature range of -10 °C to 60 °C. Submit the exact part number, quantity, and application requirements to receive a formal quotation.

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Manufacturer: Festo
Part number: 8157639
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Technical Specifications

Valve function: Exhaust air ow control non-return function
Pneumatic connection 1: QS-6
Pneumatic connection 2: R1/8
Actuation type: Manual
Adjusting element: Rotary knob with latch
Type of mounting: Screw-in
Standard nominal ow rate in ow control direction: 165 l/min
Standard nominal ow rate in non-return direction: 110 l/min...200 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: 280 l/min
Standard ow rate in non-return direction at 6 -> 0 bar: 300 l/min...360 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 8157639. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.