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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.
  • Inverted 1/16" end substantially reduces internal volume
  • Drop in frit for use with L.C. columns or G.C. columns
  • Conical angle below frit directs flow over more frit surface
  • Available for up to 1" columns
  • Low dead volume fitting adapter for connection to compression fitting tubes.

  • G.C. = Gas Chromatograph
    L.C. = Liquid Chromatograph
    Column End Fitting - Low Internal Volume for fractional tube
    Unit of Measure
    Items Column End Fitting - Low Internal Volume for fractional tube
    4-1 Z3HCZ7
    Column End Fitting - Low Internal Volume for fractional tube
    Column End Fitting - Low Internal Volume for fractional tube
    6-1 Z3HCZ7
    Column End Fitting - Low Internal Volume for fractional tube
    Column End Fitting - Low Internal Volume for fractional tube
    8-1 Z3HCZ7
    Column End Fitting - Low Internal Volume for fractional tube
    Column End Fitting - Low Internal Volume for fractional tube
    16-1 Z3HCZ7
    Column End Fitting - Low Internal Volume for fractional tube
    Column End Fitting - Low Internal Volume for fractional tube
    4-1 Z3HLZ7
    Column End Fitting - Low Internal Volume for fractional tube
    Connection Type N/A CPI™ to CPI™ N/A CPI™ to CPI™ N/A CPI™ to CPI™ N/A CPI™ to CPI™ N/A A-LOK® to A-LOK®
    T1 Tube O.D. N/A 1/4 in N/A 3/8 in N/A 1/2 in N/A 1 in N/A 1/4 in
    T2 Tube O.D. N/A 1/16 in
    A N/A 1.28 in N/A 1.37 in N/A 1.62 in N/A 2.00 in N/A 1.28 in
    C N/A .70 in N/A .76 in N/A .87 in N/A 1.05 in N/A .70 in
    W HEX N/A 1/2 in N/A 5/8 in N/A 13/16 in N/A 1 3/8 in N/A 1/2 in
    Internal Opening N/A .02 in N/A .02 in N/A .03 in N/A .03 in N/A .02 in
    Internal Volume N/A 6.1 x 10-4cc N/A 8.1 x 10-4cc N/A 2.8 x 10-3cc N/A 2 x 10-2cc N/A 6.1 x 10-4cc