Parker CPI™/A-LOK® Instrumentation Tube Fittings are designed as leak-free connections for process, power and instrumentation applications. The CPI tube fittings utilize a single ferrule for easy make-up and excellent performance in vibration applications. The “spring loaded” effect of the single ferrule creates a constant tension between the fitting body and fitting nut. The A-LOK two ferrule compression tube fittings are designed to provide reliable leak-free connections for applications that specify a two ferrule system. These single and two ferrule fitting designs are manufactured to the highest quality standards and are available in a broad range of sizes, materials and configurations.

NOTE:
  • Dimensions for reference only, subject to change.
  • Fittings of this group may be back-drilled to larger I.D. at pipe end.
  • A and C dimensions are typical finger-tight.
  • Pipe Buttweld end will conform to Schedule 80 unless otherwise noted.
  • E dimension is minimum opening.
  • Adapter fitting for connection of compression fittings to welded systems.
  • Unit of Measure
    Items
    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube

    Buttweld Connector for metric tube
    Connection Type N/A CPI™ x Buttweld
    Tube O.D. N/A 3.0 mm N/A 4.0 mm N/A 6.0 mm N/A 6.0 mm N/A 8.0 mm
    Buttweld Pipe N.B. N/A 1/8 mm N/A 1/8 mm N/A 1/8 mm N/A 1/4 mm N/A 1/8 mm
    A N/A 29.7 mm N/A 30.7 mm N/A 32.9 mm N/A 37.7 mm N/A 34.2 mm
    C N/A 15.3 mm N/A 16.1 mm N/A 17.7 mm N/A 17.7 mm N/A 18.6 mm
    R N/A 9.7 mm N/A 9.7 mm N/A 9.7 mm N/A 14.2 mm N/A 9.7 mm
    X N/A 10.3 mm N/A 10.3 mm N/A 10.3 mm N/A 13.7 mm N/A 10.3 mm
    E Bore N/A 2.4 mm N/A 2.4 mm N/A 4.8 mm N/A 4.8 mm N/A 5.1 mm
    W HEX N/A 12.0 mm N/A 12.0 mm N/A 14.0 mm N/A 14.0 mm N/A 15.0 mm