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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.
    • Drop Size Elbows for fractional tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    Tube O.D.

    L1

    C1

    L2

    C2

    W HEX

    3-2 EBZ N/A CPI™ to CPI™ N/A 3/16-1/8 N/A .74 in N/A 1.01 in N/A .70 in N/A .96 in N/A 1/2 in
    4-2 EBZ N/A CPI™ to CPI™ N/A 1/4-1/8 N/A .77 in N/A 1.06 in N/A .70 in N/A .96 in N/A 1/2 in
    5-2 EBZ N/A CPI™ to CPI™ N/A 5/16-1/8 N/A .88 in N/A 1.17 in N/A .78 in N/A 1.04 in N/A 5/8 in
    5-4 EBZ N/A CPI™ to CPI™ N/A 5/16-1/4 N/A .88 in N/A 1.17 in N/A .85 in N/A 1.14 in N/A 5/8 in
    6-2 EBZ N/A CPI™ to CPI™ N/A 3/8-1/8 N/A .91 in N/A 1.20 in N/A .78 in N/A 1.04 in N/A 5/8 in
    6-4 EBZ N/A CPI™ to CPI™ N/A 3/8-1/4 N/A .91 in N/A 1.20 in N/A .85 in N/A 1.17 in N/A 5/8 in
    6-5 EBZ N/A CPI™ to CPI™ N/A 3/8-5/16 N/A .91 in N/A 1.20 in N/A .88 in N/A 1.17 in N/A 5/8 in
    8-4 EBZ N/A CPI™ to CPI™ N/A 1/2-1/4 N/A 1.02 in N/A 1.42 in N/A .96 in N/A 1.25 in N/A 13/16 in
    8-5 EBZ N/A CPI™ to CPI™ N/A 1/2-5/16 N/A 1.02 in N/A 1.42 in N/A .99 in N/A 1.28 in N/A 13/16 in
    8-6 EBZ N/A CPI™ to CPI™ N/A 1/2-3/8 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
    10-6 EBZ N/A CPI™ to CPI™ N/A 5/8-3/8 N/A 1.10 in N/A 1.50 in N/A 1.10 in N/A 1.39 in N/A 15/16 in
    10-8 EBZ N/A CPI™ to CPI™ N/A 5/8-1/2 N/A 1.10 in N/A 1.50 in N/A 1.10 in N/A 1.50 in N/A 15/16 in
    12-4 EBZ N/A CPI™ to CPI™ N/A 3/4-1/4 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
    12-6 EBZ N/A CPI™ to CPI™ N/A 3/4-3/8 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
    12-8 EBZ N/A CPI™ to CPI™ N/A 3/4-1/2 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
    14-4 EBZ N/A CPI™ to CPI™ N/A 7/8-1/4 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
    16-8 EBZ N/A CPI™ to CPI™ N/A 1/1/2002 N/A 1.45 in N/A 1.94 in N/A 1.36 in N/A 1.76 in N/A 1 3/8 in
    16-12 EBZ N/A CPI™ to CPI™ N/A 1/3/2004 N/A 1.45 in N/A 1.94 in N/A 1.36 in N/A 1.76 in N/A 1 3/8 in
    3-2 ELZ N/A A-LOK® to A-LOK® N/A 3/16-1/8 N/A .74 in N/A 1.01 in N/A .70 in N/A .96 in N/A 1/2 in
    4-2 ELZ N/A A-LOK® to A-LOK® N/A 1/4-1/8 N/A .77 in N/A 1.06 in N/A .70 in N/A .96 in N/A 1/2 in
    5-2 ELZ N/A A-LOK® to A-LOK® N/A 5/16-1/8 N/A .88 in N/A 1.17 in N/A .78 in N/A 1.04 in N/A 5/8 in
    5-4 ELZ N/A A-LOK® to A-LOK® N/A 5/16-1/4 N/A .88 in N/A 1.17 in N/A .85 in N/A 1.14 in N/A 5/8 in
    6-2 ELZ N/A A-LOK® to A-LOK® N/A 3/8-1/8 N/A .91 in N/A 1.20 in N/A .78 in N/A 1.04 in N/A 5/8 in
    6-4 ELZ N/A A-LOK® to A-LOK® N/A 3/8-1/4 N/A .91 in N/A 1.20 in N/A .85 in N/A 1.17 in N/A 5/8 in
    6-5 ELZ N/A A-LOK® to A-LOK® N/A 3/8-5/16 N/A .91 in N/A 1.20 in N/A .88 in N/A 1.17 in N/A 5/8 in
    Unit of Measure
    1 2