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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.

For plugging open ended CPI™ / A-LOK® fitting ends

NOTE:
  • Dimensions for reference only, subject to change.

    • HOW TO ASSEMBLE

    Wrench tighten only 1/4 turn from finger tight position. Assembly includes machined ferrule with lock ring.
    Plug for fractional tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    Tube O.D.

    Thread

    A

    W HEX

    1 FNZ N/A CPI™ N/A 1/16 in N/A 10-32 N/A .31 in N/A 5/16 in
    2 FNZ N/A CPI™ N/A 1/8 in N/A 5/16-20 N/A .47 in N/A 7/16 in
    3 FNZ N/A CPI™ N/A 3/16 in N/A 3/8-20 N/A .47 in N/A 1/2 in
    4 FNZ N/A CPI™ N/A 1/4 in N/A 7/16-20 N/A .50 in N/A 9/16 in
    5 FNZ N/A CPI™ N/A 5/16 in N/A 1/2-20 N/A .53 in N/A 5/8 in
    6 FNZ N/A CPI™ N/A 3/8 in N/A 9/16-20 N/A .56 in N/A 11/16 in
    8 FNZ N/A CPI™ N/A 1/2 in N/A 3/4-20 N/A .69 in N/A 7/8 in
    10 FNZ N/A CPI™ N/A 5/8 in N/A 7/8-20 N/A .69 in N/A 1 in
    12 FNZ N/A CPI™ N/A 3/4 in N/A 1-20 N/A .69 in N/A 1 1/8 in
    14 FNZ N/A CPI™ N/A 7/8 in N/A 1 1/8-20 N/A .69 in N/A 1 1/4 in
    16 FNZ N/A CPI™ N/A 1 in N/A 1 5/16-20 N/A .81 in N/A 1 1/2 in
    20 FNZ N/A CPI™ N/A 1 1/4 in N/A 1 5/8-20 N/A 1.35 in N/A 1 7/8 in
    24 FNZ N/A CPI™ N/A 1 1/2 in N/A 1 15/16-20 N/A 1.72 in N/A 2 1/4 in
    32 FNZ N/A CPI™ N/A 2 in N/A 2 5/8-20 N/A 2.27 in N/A 2 3/4 in
    1BLP1 N/A A-LOK® N/A 1/16 in N/A 10-32 N/A .31 in N/A 5/16 in
    2BLP2 N/A A-LOK® N/A 1/8 in N/A 5/16-20 N/A .47 in N/A 7/16 in
    3BLP3 N/A A-LOK® N/A 3/16 in N/A 3/8-20 N/A .47 in N/A 1/2 in
    4BLP4 N/A A-LOK® N/A 1/4 in N/A 7/16-20 N/A .50 in N/A 9/16 in
    5BLP5 N/A A-LOK® N/A 5/16 in N/A 1/2-20 N/A .53 in N/A 5/8 in
    6BLP6 N/A A-LOK® N/A 3/8 in N/A 9/16-20 N/A .56 in N/A 11/16 in
    8BLP8 N/A A-LOK® N/A 1/2 in N/A 3/4-20 N/A .69 in N/A 7/8 in
    10BLP10 N/A A-LOK® N/A 5/8 in N/A 7/8-20 N/A .69 in N/A 1 in
    12BLP12 N/A A-LOK® N/A 3/4 in N/A 1-20 N/A .69 in N/A 1 1/8 in
    14BLP14 N/A A-LOK® N/A 7/8 in N/A 1 1/8-20 N/A .69 in N/A 1 1/4 in
    16BLP16 N/A A-LOK® N/A 1 in N/A 1 5/16-20 N/A .81 in N/A 1 1/2 in
    Unit of Measure
    1 2 
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