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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 fractional tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    A

    C

    W HEX

    1-1 HBZ N/A CPI™ to CPI™ N/A .99 in N/A .43 in N/A 5/16 in
    2-2 HBZ N/A CPI™ to CPI™ N/A 1.39 in N/A .60 in N/A 7/16 in
    3-3 HBZ N/A CPI™ to CPI™ N/A 1.48 in N/A .64 in N/A 7/16 in
    4-4 HBZ N/A CPI™ to CPI™ N/A 1.62 in N/A .70 in N/A 1/2 in
    5-5 HBZ N/A CPI™ to CPI™ N/A 1.70 in N/A .73 in N/A 9/16 in
    6-6 HBZ N/A CPI™ to CPI™ N/A 1.77 in N/A .76 in N/A 5/8 in
    8-8 HBZ N/A CPI™ to CPI™ N/A 2.02 in N/A .87 in N/A 13/16 in
    10-10 HBZ N/A CPI™ to CPI™ N/A 2.05 in N/A .87 in N/A 15/16 in
    12-12 HBZ N/A CPI™ to CPI™ N/A 2.11 in N/A .87 in N/A 1 1/16 in
    14-14 HBZ N/A CPI™ to CPI™ N/A 2.18 in N/A .87 in N/A 1 3/16 in
    16-16 HBZ N/A CPI™ to CPI™ N/A 2.57 in N/A 1.05 in N/A 1 3/8 in
    20-20 HBZ N/A CPI™ to CPI™ N/A 3.61 in N/A 1.52 in N/A 1 3/4 in
    24-24 HBZ N/A CPI™ to CPI™ N/A 4.23 in N/A 1.77 in N/A 2 1/8 in
    32-32 HBZ N/A CPI™ to CPI™ N/A 5.88 in N/A 2.47 in N/A 2 3/4 in
    1SC1 N/A A-LOK® to A-LOK® N/A .99 in N/A .43 in N/A 5/16 in
    2SC2 N/A A-LOK® to A-LOK® N/A 1.39 in N/A .60 in N/A 7/16 in
    3SC3 N/A A-LOK® to A-LOK® N/A 1.48 in N/A .64 in N/A 7/16 in
    4SC4 N/A A-LOK® to A-LOK® N/A 1.62 in N/A .70 in N/A 1/2 in
    5SC5 N/A A-LOK® to A-LOK® N/A 1.70 in N/A .73 in N/A 9/16 in
    6SC6 N/A A-LOK® to A-LOK® N/A 1.77 in N/A .76 in N/A 5/8 in
    8SC8 N/A A-LOK® to A-LOK® N/A 2.02 in N/A .87 in N/A 13/16 in
    10SC10 N/A A-LOK® to A-LOK® N/A 2.05 in N/A .87 in N/A 15/16 in
    12SC12 N/A A-LOK® to A-LOK® N/A 2.11 in N/A .87 in N/A 1 1/16 in
    14SC14 N/A A-LOK® to A-LOK® N/A 2.18 in N/A .87 in N/A 1 3/16 in
    16SC16 N/A A-LOK® to A-LOK® N/A 2.57 in N/A 1.05 in N/A 1 3/8 in
    Unit of Measure
    1 2