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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.
  • C dimension is typical finger-tight.
    • NPT Male 45° Elbow for metric tube
    Unit of Measure
    1 

    Item #

    Connection Type

    Tube O.D.

    NPT Pipe Thread

    C

    L

    P

    R

    W HEX

    VBZ 6-1/8 N/A CPI™ to NPT N/A 6.0 mm N/A 1/8 N/A 17.7 mm N/A 16.0 mm N/A 16.8 mm N/A 9.7 mm N/A 14.0 mm
    VBZ 6-1/4 N/A CPI™ to NPT N/A 6.0 mm N/A 1/4 N/A 17.7 mm N/A 16.0 mm N/A 21.8 mm N/A 14.5 mm N/A 14.0 mm
    VBZ 8-1/8 N/A CPI™ to NPT N/A 8.0 mm N/A 1/8 N/A 18.6 mm N/A 16.8 mm N/A 16.8 mm N/A 9.7 mm N/A 14.0 mm
    VBZ 10-1/4 N/A CPI™ to NPT N/A 10.0 mm N/A 1/4 N/A 19.5 mm N/A 19.0 mm N/A 24.1 mm N/A 14.5 mm N/A 19.0 mm
    VBZ 12-3/8 N/A CPI™ to NPT N/A 12.0 mm N/A 3/8 N/A 22.0 mm N/A 19.0 mm N/A 24.1 mm N/A 14.5 mm N/A 19.0 mm
    VBZ 12-1/2 N/A CPI™ to NPT N/A 12.0 mm N/A 1/2 N/A 22.0 mm N/A 20.6 mm N/A 29.7 mm N/A 19.2 mm N/A 22.0 mm
    VBZ 16-1/2 N/A CPI™ to NPT N/A 16.0 mm N/A 1/2 N/A 22.0 mm N/A 20.6 mm N/A 29.7 mm N/A 19.2 mm N/A 22.0 mm
    M6MVEL1/8N N/A A-LOK® to NPT N/A 6.0 mm N/A 1/8 N/A 17.7 mm N/A 16.0 mm N/A 16.8 mm N/A 9.7 mm N/A 14.0 mm
    M6MVEL1/4N N/A A-LOK® to NPT N/A 6.0 mm N/A 1/4 N/A 17.7 mm N/A 16.0 mm N/A 21.8 mm N/A 14.5 mm N/A 14.0 mm
    M8MVEL1/8N N/A A-LOK® to NPT N/A 8.0 mm N/A 1/8 N/A 18.6 mm N/A 16.8 mm N/A 16.8 mm N/A 9.7 mm N/A 14.0 mm
    M10MVEL1/4N N/A A-LOK® to NPT N/A 10.0 mm N/A 1/4 N/A 19.5 mm N/A 19.0 mm N/A 24.1 mm N/A 14.5 mm N/A 19.0 mm
    M12MVEL3/8N N/A A-LOK® to NPT N/A 12.0 mm N/A 3/8 N/A 22.0 mm N/A 19.0 mm N/A 24.1 mm N/A 14.5 mm N/A 19.0 mm
    M12MVEL1/2N N/A A-LOK® to NPT N/A 12.0 mm N/A 1/2 N/A 22.0 mm N/A 20.6 mm N/A 29.7 mm N/A 19.2 mm N/A 22.0 mm
    M16MVEL1/2N N/A A-LOK® to NPT N/A 16.0 mm N/A 1/2 N/A 22.0 mm N/A 20.6 mm N/A 29.7 mm N/A 19.2 mm N/A 22.0 mm
    Unit of Measure
    1