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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.
  • Parts are supplied with nitrile o-rings as standard. For Fluorocarbon o-rings, add the suffix “-VO”. Other o-rings available upon request.
  • Male Run Tee SAE Straight Thread for fractional tube
    Unit of Measure
    Items Male Run Tee SAE Straight Thread for fractional tube
    4-4-4 R5BZ
    Male Run Tee SAE Straight Thread for fractional tube
    Male Run Tee SAE Straight Thread for fractional tube
    6-6-6 R5BZ
    Male Run Tee SAE Straight Thread for fractional tube
    Male Run Tee SAE Straight Thread for fractional tube
    8-8-8 R5BZ
    Male Run Tee SAE Straight Thread for fractional tube
    Male Run Tee SAE Straight Thread for fractional tube
    12-12-12 R5BZ
    Male Run Tee SAE Straight Thread for fractional tube
    Male Run Tee SAE Straight Thread for fractional tube
    16-16-16 R5BZ
    Male Run Tee SAE Straight Thread for fractional tube
    Connection Type N/A CPI™ x Straight Thread x CPI™
    Straight Thread Size N/A 7/16-20 N/A 9/16-18 N/A 3/4-16 N/A 1 1/16-12 N/A 1 5/16-12
    A N/A 2.24 in N/A 2.51 in N/A 2.93 in N/A 3.57 in N/A 3.92 in
    C N/A 1.12 in N/A 1.26 in N/A 1.48 in N/A 1.63 in N/A 1.87 in
    H N/A 1.12 in N/A 1.25 in N/A 1.45 in N/A 1.94 in N/A 2.05 in
    L N/A .83 in N/A .97 in N/A 1.08 in N/A 1.23 in N/A 1.38 in
    R N/A .83 in N/A .84 in N/A .97 in N/A 1.28 in N/A 1.28 in
    W HEX N/A 7/16 in N/A 9/16 in N/A 3/4 in N/A 1 1/16 in N/A 1 5/16 in
    O-Ring Arp Uniform Dash No. N/A 3-904 N/A 3-906 N/A 3-908 N/A 3-912 N/A 3-916