193965

Name: Festo 193965 One-way flow control valve GR-QS-3
Brand: Festo

One-way flow control valve GR-QS-3

The Festo 193965 is an industrial component featuring a one-way flow control function with QS-3 pneumatic connections on both ports and a knurled screw adjusting element. Built with a PA-reinforced housing, NBR seals, and a POM releasing ring, it delivers a standard nominal flow rate of 85 l/min in the flow control direction and 120 l/min in the non-return direction across an operating pressure range of 0.2 bar to 10 bar. This unit supports compressed air operation according to ISO 8573-1:2010 [7:4:4], accommodates ATEX explosion protection compliance for zones 1, 2, 21, and 22, and weighs 12 g with alternative mounting configurations including front panel mounting and through-hole installation. Submit the exact part number, quantity, and application requirements to request 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: 193965
Data verification: Manufacturer evidence reviewed

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Verified configuration

Technical Specifications

Valve function: One-way ow control function
Pneumatic connection 1: QS-3
Pneumatic connection 2: QS-3
Adjusting element: Knurled screw
Type of mounting: Alternatively: | Front panel mounting | With through-hole | With accessories
Standard nominal ow rate in ow control direction: 85 l/min
Standard nominal ow rate in non-return direction: 120 l/min
Operating pressure: 0.2 bar...10 bar
Ambient temperature: -10 °C...60 °C
Housing material: PA-reinforced
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
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)
LABS (PWIS) conformity: VDMA24364-B1/B2-L
Temperature of medium: -10 °C...60 °C
Product weight: 12 g
Note on materials: RoHS compliant
Seals material: NBR
Releasing ring material: POM
Knurled head material: PA-reinforced

Engineering context

Identification and RFQ Guidance

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.

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 193965. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.