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Festo
531641
Quick coupling socket KD4-N-9
The Festo part number 531641 is an industrial component featuring a 7.4 mm nominal width, a 9 mm barbed hose fitting for pneumatic connection 1, and an operating pressure range of -0.095 MPa to 1.2 MPa. Constructed with a nickel-plated brass housing, NBR seals, and high-alloy stainless steel springs, circlips, pins, and valve bodies, this 57 g unit delivers a normal nominal flow rate from 810 l/min to 1152 l/min and an ISO 8778 standardized flow rate from 878 l/min to 1248.8 l/min using compressed air according to ISO 8573-1:2010 [7:-:-]. It operates within an ambient temperature range of -10 °C to 60 °C, supports lubricated operation, and complies with RoHS and VDMA24364-B1/B2-L LABS conformity standards with a corrosion resistance class of 1. Submit the exact part number, quantity, and application requirements for 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
- 531641
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531641.
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
- 7.4 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)
- 810 l/min...1152 l/min
- Nominal ow rate standardized according to ISO 8778
- 878 l/min...1248.8 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
- 57 g
- Pneumatic connection 1
- 9 mm barbed hose tting
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Material of spring
- high-alloy stainless steel
- Housing material
- Brass, nickel-plated
- Inner raceway material
- Brass
- Circlip material
- high-alloy stainless steel
- Material of pins
- high-alloy stainless steel
- Valve body material
- Brass
- Material releasing sleeve
- PP
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 531641. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.