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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:
  • A and C dimensions are typical finger-tight.
  • Dimensions for reference only, subject to change.
  • Size 1 Nut is not silver plated.
  • Low dead volume fitting adapter for connection to compression fitting tubes.
  • Column End Fitting - (without Frit) for fractional tube
    Unit of Measure
    1 

    Item #

    Connection Type

    T1 Tube O.D.

    T2 Tube O.D.

    A

    C1

    C2

    W HEX

    Internal Opening

    Internal Volume

    2-1 ZHCZ N/A CPI™ to CPI™ N/A 1/8 in N/A 1/16 in N/A 1.21 in N/A .60 in N/A .43 in N/A 7/16 in N/A .02 in N/A 2.1 x 10-3cc
    4-1 ZHCZ N/A CPI™ to CPI™ N/A 1/4 in N/A 1/16 in N/A 1.35 in N/A .70 in N/A .43 in N/A 1/2 in N/A .02 in N/A 2.1 x 10-3cc
    6-1 ZHCZ N/A CPI™ to CPI™ N/A 3/8 in N/A 1/16 in N/A 1.44 in N/A .76 in N/A .43 in N/A 5/8 in N/A .02 in N/A 2.3 x 10-3cc
    2-1 ZHLZ N/A A-LOK® to A-LOK® N/A 1/8 in N/A 1/16 in N/A 1.21 in N/A .60 in N/A .43 in N/A 7/16 in N/A .02 in N/A 2.1 x 10-3cc
    4-1 ZHLZ N/A A-LOK® to A-LOK® N/A 1/4 in N/A 1/16 in N/A 1.35 in N/A .70 in N/A .43 in N/A 1/2 in N/A .02 in N/A 2.1 x 10-3cc
    6-1 ZHLZ N/A A-LOK® to A-LOK® N/A 3/8 in N/A 1/16 in N/A 1.44 in N/A .76 in N/A .43 in N/A 5/8 in N/A .02 in N/A 2.3 x 10-3cc
    Unit of Measure
    1