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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:
  • Metric Tube to Inch Tube
  • Dimensions for reference only, subject to change.
  • A, C1 and C2 dimensions are typical finger-tight.
  • Conversion Union for metric tube
    Unit of Measure
    Items Conversion Union for metric tube
    HBZ 3-1/8
    Conversion Union for metric tube Metric Tube to Inch Tube
    Conversion Union for metric tube
    HBZ 4-1/8
    Conversion Union for metric tube Metric Tube to Inch Tube
    Conversion Union for metric tube
    HBZ 4-1/4
    Conversion Union for metric tube Metric Tube to Inch Tube
    Conversion Union for metric tube
    HBZ 6-1/8
    Conversion Union for metric tube Metric Tube to Inch Tube
    Conversion Union for metric tube
    HBZ 6-1/4
    Conversion Union for metric tube Metric Tube to Inch Tube
    Connection Type N/A CPI™ to CPI™
    T1 Tube O.D. N/A 3.0 mm N/A 4.0 mm N/A 4.0 mm N/A 6.0 mm N/A 6.0 mm
    T2 Tube O.D. N/A 1/8 in N/A 1/8 in N/A 1/4 in N/A 1/8 in N/A 1/4 in
    A N/A 36.3 mm N/A 36.5 mm N/A 39.3 mm N/A 38.5 mm N/A 41.1 mm
    C1 N/A 15.3 mm N/A 16.1 mm N/A 16.1 mm N/A 17.7 mm N/A 17.7 mm
    C2 N/A 15.2 mm N/A 15.2 mm N/A 17.8 mm N/A 15.2 mm N/A 17.8 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 14.0 mm