KS3-CK-4 – Quick Coupling Plug – Festo Couplings

USD $ 10.50

SKU: Festo 3326

Manufacturer Part Number: Festo 3326
Festo Couplings: KS3-CK-4
OEM Spec Ref 

The Festo KS3-CK-4, MPN 3326, stands as a benchmark in coupling technology, embodying the fusion of precision engineering and versatile functionality. Engineered to meet the demanding needs of a broad spectrum of industrial applications, this coupling ensures a leak-proof and secure connection, enhancing system reliability and performance. Its exceptional design and materials offer both durability and ease of use, making it an essential component for any pneumatic system.

Key Features:

  • Superior Sealing Technology: Guarantees a reliable, leak-proof connection, preventing air loss and ensuring efficient operation.
  • High Durability: Crafted from robust materials, this coupling withstands harsh industrial environments, promising long service life.
  • Easy Installation: Designed for quick and hassle-free connection and disconnection, saving time and reducing maintenance efforts.
  • Versatile Application: Suitable for a wide range of industrial environments, from automation to manufacturing and beyond.


  • Enhanced System Performance: By ensuring a tight and secure connection, it maximizes the efficiency and reliability of pneumatic systems.
  • Reduced Operational Costs: Durable construction and efficient operation lower maintenance needs and energy consumption.
  • Operational Flexibility: Easy to install and remove, it supports dynamic system requirements and simplifies maintenance.


  • Automated Production Lines: Plays a critical role in maintaining the reliability and efficiency of pneumatic automation systems.
  • Industrial Manufacturing: Ensures seamless operation in demanding industrial environments, supporting a wide range of manufacturing processes.
  • Pneumatic Transport Systems: Provides reliable connections in pneumatic conveying systems, essential for material handling operations.

The Festo KS3-CK-4 coupling represents a significant advance in coupling technology, designed to meet the high standards of modern industrial applications. Offering unmatched reliability, ease of use, and flexibility, it is a key component for optimizing pneumatic systems across various sectors.

Technical Data

Feature Specification
Nominal width 2.9 mm
Operating pressure for entire temperature range -0.095 MPa … 1.2 MPa
Operating pressure for entire temperature range -0.95 bar … 12 bar
Operating pressure for entire temperature range -13.775 psi … 174 psi
Standard nominal flow rate 158 l/min … 185 l/min
Nominal flow rate standardized according to ISO 8778 171.3 l/min … 200.5 l/min
Operating medium Compressed air as per ISO 8573-1:2010 [7:-:-]
Information on operating and pilot media Operation with oil lubrication possible
Corrosion resistance class (CRC) 1 – Low corrosion stress
LABS (PWIS) conformity VDMA24364-B1/B2-L
Ambient temperature -10 °C … 60 °C
Product weight 16 g
Pneumatic connection 1 For pneumatic tubing outside diameter 6 mm <br> For barbed fitting, inside diameter 4 mm, with union nut
Material of union nut Wrought aluminum alloy, nickel-plated
Note on materials RoHS-compliant
Information on materials Brass, nickel-plated
Weight 0.016 kg