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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 dimensions are typical finger-tight.
  • Eliminates the extra connection when adapting with a tube stub reducer.
    • Drop Size Tees for fractional tube
    Unit of Measure
    1 2 3 4 5 

    Item #

    Connection Type

    T1 Tube O.D.

    T2 Tube O.D.

    T3 Tube O.D.

    A

    L1

    C1

    L2

    C2

    L3

    C3

    W HEX

    16-8-6 JBZ N/A CPI™ x CPI™ x CPI™ N/A 1 in N/A 1/2 in N/A 3/8 in N/A 3.70 in N/A 1.45 in N/A 1.94 in N/A 1.36 in N/A 1.76 in N/A 1.36 in N/A 1.65 in N/A 1 3/8 in
    16-8-4 JBZ N/A CPI™ x CPI™ x CPI™ N/A 1 in N/A 1/2 in N/A 1/4 in N/A 3.70 in N/A 1.45 in N/A 1.94 in N/A 1.36 in N/A 1.76 in N/A 1.30 in N/A 1.59 in N/A 1 3/8 in
    16-6-6 JBZ N/A CPI™ x CPI™ x CPI™ N/A 1 in N/A 3/8 in N/A 3/8 in N/A 3.59 in N/A 1.45 in N/A 1.94 in N/A 1.36 in N/A 1.65 in N/A 1.36 in N/A 1.65 in N/A 1 3/8 in
    4-4-2 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/4 in N/A 1/4 in N/A 1/8 in N/A 2.10 in N/A .76 in N/A 1.05 in N/A .76 in N/A 1.05 in N/A .70 in N/A .96 in N/A 1/2 in
    6-6-4 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/8 in N/A 3/8 in N/A 1/4 in N/A 2.40 in N/A .91 in N/A 1.20 in N/A .91 in N/A 1.20 in N/A .85 in N/A 1.14 in N/A 5/8 in
    6-4-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/8 in N/A 1/4 in N/A 3/8 in N/A 2.34 in N/A .91 in N/A 1.20 in N/A .85 in N/A 1.14 in N/A .91 in N/A 1.20 in N/A 5/8 in
    6-4-4 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/8 in N/A 1/4 in N/A 1/4 in N/A 2.34 in N/A .91 in N/A 1.20 in N/A .85 in N/A 1.14 in N/A .85 in N/A 1.14 in N/A 5/8 in
    8-8-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 1/2 in N/A 3/8 in N/A 2.84 in N/A 1.02 in N/A 1.42 in N/A 1.02 in N/A 1.42 in N/A 1.02 in N/A 1.31 in N/A 13/16 in
    8-8-4 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 1/2 in N/A 1/4 in N/A 2.84 in N/A 1.02 in N/A 1.42 in N/A 1.02 in N/A 1.42 in N/A .96 in N/A 1.25 in N/A 13/16 in
    8-6-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 3/8 in N/A 1/2 in N/A 2.73 in N/A 1.02 in N/A 1.42 in N/A 1.02 in N/A 1.31 in N/A 1.02 in N/A 1.42 in N/A 13/16 in
    8-4-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 1/4 in N/A 1/2 in N/A 2.67 in N/A 1.02 in N/A 1.42 in N/A .96 in N/A 1.25 in N/A 1.02 in N/A 1.42 in N/A 13/16 in
    8-6-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 3/8 in N/A 3/8 in N/A 2.73 in N/A 1.02 in N/A 1.42 in N/A 1.02 in N/A 1.31 in N/A 1.02 in N/A 1.31 in N/A 13/16 in
    8-4-4 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 1/2 in N/A 1/4 in N/A 1/4 in N/A 2.67 in N/A 1.02 in N/A 1.42 in N/A .96 in N/A 1.25 in N/A .96 in N/A 1.25 in N/A 13/16 in
    10-10-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 5/8 in N/A 1/2 in N/A 3.06 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 7/8 in
    10-10-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 5/8 in N/A 3/8 in N/A 3.06 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 7/8 in
    10-8-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 1/2 in N/A 1/2 in N/A 3.06 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 7/8 in
    10-8-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 1/2 in N/A 3/8 in N/A 3.06 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.42 in N/A 7/8 in
    10-6-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 3/8 in N/A 3/8 in N/A 2.95 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.42 in N/A 1.13 in N/A 1.42 in N/A 7/8 in
    10-6-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 5/8 in N/A 3/8 in N/A 1/2 in N/A 2.95 in N/A 1.13 in N/A 1.53 in N/A 1.13 in N/A 1.42 in N/A 1.13 in N/A 1.53 in N/A 7/8 in
    12-12-10 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 3/4 in N/A 5/8 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1 1/16 in
    12-12-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 3/4 in N/A 1/2 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1 1/16 in
    12-12-6 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 3/4 in N/A 3/8 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.45 in N/A 1 1/16 in
    12-12-4 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 3/4 in N/A 1/4 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.10 in N/A 1.39 in N/A 1 1/16 in
    12-10-10 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 5/8 in N/A 5/8 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1 1/16 in
    12-8-8 JLZ N/A A-LOK® x A-LOK® x A-LOK® N/A 3/4 in N/A 1/2 in N/A 1/2 in N/A 3.12 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1.16 in N/A 1.56 in N/A 1 1/16 in
    Unit of Measure
    1 2 3 4 5