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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.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
4091
Quick coupling plug KS2-CK-3
The Festo part number 4091 is an industrial component featuring a 2 mm nominal width and a product weight of 4 g, supporting an operating pressure range of -0.095 MPa to 1.2 MPa (-0.95 bar to 12 bar / -13.775 psi to 174 psi) across an ambient temperature of -10 °C to 60 °C. It accommodates compressed air as per ISO 8573-1:2010 [7:-:-] with lubricated operation possible, delivering a normal nominal flow rate of 68 l/min to 84 l/min and an ISO 8778 standardized flow rate of 73.7 l/min to 91.1 l/min. The unit includes pneumatic connection 1 for 4 mm outside diameter pneumatic tubing or a barbed fitting with a 3 mm inside diameter and an anodized wrought aluminum alloy union nut, utilizing nickel-plated brass materials with RoHS compliance, a CRC rating of 1 for low corrosion stress, and VDMA24364-B1/B2-L LABS conformity. Submit the exact part number, quantity, and application requirements to request a quote.
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
- 4091
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 4091.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Nominal width
- 2 mm
- Operating pressure for entire temperature range
- -0.095 MPa...1.2 MPa | -0.95 bar...12 bar | -13.775 psi...174 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 68 l/min...84 l/min
- Nominal ow rate standardized according to ISO 8778
- 73.7 l/min...91.1 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:-:-]
- Information on operating and pilot media
- Lubricated operation possible
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 4 g
- Pneumatic connection 1
- for pneumatic tubing outside diameter 4 mm | For barbed tting, inside diameter 3 mm, with union nut
- Material of union nut
- Wrought aluminum alloy, anodized
- Note on materials
- RoHS compliant
- Information on materials
- Brass, nickel-plated
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 4091. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.