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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:
  • Dimensions for reference only, subject to change.
  • A and C dimensions are typical finger-tight.
  • Union for metric tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    Tube O.D.

    A

    C

    W HEX

    HBZ 2-2 N/A CPI™ to CPI™ N/A 2.0 mm N/A 35.6 mm N/A 15.3 mm N/A 12.0 mm
    HBZ 3-3 N/A CPI™ to CPI™ N/A 3.0 mm N/A 35.3 mm N/A 15.3 mm N/A 12.0 mm
    HBZ 4-4 N/A CPI™ to CPI™ N/A 4.0 mm N/A 37.4 mm N/A 16.1 mm N/A 12.0 mm
    HBZ 6-6 N/A CPI™ to CPI™ N/A 6.0 mm N/A 41.2 mm N/A 17.7 mm N/A 14.0 mm
    HBZ 8-8 N/A CPI™ to CPI™ N/A 8.0 mm N/A 43.2 mm N/A 18.6 mm N/A 15.0 mm
    HBZ 10-10 N/A CPI™ to CPI™ N/A 10.0 mm N/A 46.2 mm N/A 19.5 mm N/A 18.0 mm
    HBZ 12-12 N/A CPI™ to CPI™ N/A 12.0 mm N/A 51.2 mm N/A 22.0 mm N/A 22.0 mm
    HBZ 14-14 N/A CPI™ to CPI™ N/A 14.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    HBZ 15-15 N/A CPI™ to CPI™ N/A 15.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    HBZ 16-16 N/A CPI™ to CPI™ N/A 16.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    HBZ 18-18 N/A CPI™ to CPI™ N/A 18.0 mm N/A 53.5 mm N/A 22.0 mm N/A 27.0 mm
    HBZ 20-20 N/A CPI™ to CPI™ N/A 20.0 mm N/A 55.0 mm N/A 22.0 mm N/A 30.0 mm
    HBZ 22-22 N/A CPI™ to CPI™ N/A 22.0 mm N/A 55.0 mm N/A 22.0 mm N/A 30.0 mm
    HBZ 25-25 N/A CPI™ to CPI™ N/A 25.0 mm N/A 65.1 mm N/A 26.5 mm N/A 35.0 mm
    SCM2 N/A A-LOK® to A-LOK® N/A 2.0 mm N/A 35.6 mm N/A 15.3 mm N/A 12.0 mm
    SCM3 N/A A-LOK® to A-LOK® N/A 3.0 mm N/A 35.3 mm N/A 15.3 mm N/A 12.0 mm
    SCM4 N/A A-LOK® to A-LOK® N/A 4.0 mm N/A 37.4 mm N/A 16.1 mm N/A 12.0 mm
    SCM6 N/A A-LOK® to A-LOK® N/A 6.0 mm N/A 41.2 mm N/A 17.7 mm N/A 14.0 mm
    SCM8 N/A A-LOK® to A-LOK® N/A 8.0 mm N/A 43.2 mm N/A 18.6 mm N/A 15.0 mm
    SCM10 N/A A-LOK® to A-LOK® N/A 10.0 mm N/A 46.2 mm N/A 19.5 mm N/A 18.0 mm
    SCM12 N/A A-LOK® to A-LOK® N/A 12.0 mm N/A 51.2 mm N/A 22.0 mm N/A 22.0 mm
    SCM14 N/A A-LOK® to A-LOK® N/A 14.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    SCM15 N/A A-LOK® to A-LOK® N/A 15.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    SCM16 N/A A-LOK® to A-LOK® N/A 16.0 mm N/A 52.0 mm N/A 22.0 mm N/A 24.0 mm
    SCM18 N/A A-LOK® to A-LOK® N/A 18.0 mm N/A 53.5 mm N/A 22.0 mm N/A 27.0 mm
    Unit of Measure
    1 2