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Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
531629
Quick coupling socket KD3-CK-4
The Festo 531629 is an industrial component featuring a 2.9 mm nominal width and 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 its entire temperature range. Constructed with a nickel-plated brass housing, brass valve body, NBR seals, high-alloy stainless steel internal springs and ball, and an anodized wrought aluminum alloy union nut, this part weighs 31 g and accommodates compressed air operating media compliant with ISO 8573-1:2010 [7:-:-] with lubricated operation possible. It provides a normal nominal flow rate of 158 l/min to 225 l/min (normalized to DIN 1343) and an ISO 8778 standardized flow rate of 171.3 l/min to 243.9 l/min within an ambient temperature range of -10 °C to 60 °C. Submit the exact part number, quantity, and application requirements for a quote.
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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
- 531629
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 531629.
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
- 2.9 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)
- 158 l/min...225 l/min
- Nominal ow rate standardized according to ISO 8778
- 171.3 l/min...243.9 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
- 31 g
- Pneumatic connection 1
- For pneumatic tubing outside diameter 6 mm | For barbed tting, inside diameter 4 mm, with union nut
- Material of union nut
- Wrought aluminum alloy, anodized
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Material of spring
- high-alloy stainless steel
- Housing material
- Brass, nickel-plated
- Ball material
- high-alloy stainless steel
- Circlip material
- high-alloy stainless steel
- Valve body material
- Brass
- Material releasing sleeve
- 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 531629. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.