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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, C1 and C2 dimensions are typical finger-tight.
    • Reducing Union for fractional tube
    Unit of Measure
    Items Reducing Union for fractional tube
    2-1 HBZ
    Reducing Union for fractional tube     		Reducing Union for fractional tube
    3-1 HBZ
    Reducing Union for fractional tube     		Reducing Union for fractional tube
    3-2 HBZ
    Reducing Union for fractional tube     		Reducing Union for fractional tube
    4-1 HBZ
    Reducing Union for fractional tube     		Reducing Union for fractional tube
    4-2 HBZ
    Reducing Union for fractional tube
    Connection Type N/A CPI™ to CPI™
    T1 Tube O.D. N/A 1/8 in N/A 3/16 in N/A 3/16 in N/A 1/4 in N/A 1/4 in
    T2 Tube O.D. N/A 1/16 in N/A 1/16 in N/A 1/8 in N/A 1/16 in N/A 1/8 in
    A N/A 1.21 in N/A 1.27 in N/A 1.44 in N/A 1.38 in N/A 1.52 in
    C1 N/A .60 in N/A .64 in N/A .64 in N/A .70 in N/A .70 in
    C2 N/A .43 in N/A .43 in N/A .60 in N/A .43 in N/A .60 in
    W HEX N/A 7/16 in N/A 7/16 in N/A 7/16 in N/A 1/2 in N/A 1/2 in