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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.
  • Used to provide a seal with male or female parallel ISO threads.
  • Please note the pressure ratings are based on taper threaded ends. The pressure rating for the BSPP ends are dependent on the type of sealing washer used.
  • Copper Washers
    Unit of Measure
    Items Copper Washers
    M28329-CU
    Copper Washers for fractional tube
    Copper Washers
    M28330-CU
    Copper Washers for fractional tube
    Copper Washers
    M28331-CU
    Copper Washers for fractional tube
    Copper Washers
    M28332-CU
    Copper Washers for fractional tube
    Copper Washers
    M28334-CU
    Copper Washers for fractional tube
    Thread N/A 1/8 N/A 1/4 N/A 3/8 N/A 1/2 N/A 3/4
    D N/A .71 in N/A .87 in N/A .94 in N/A 1.18 in N/A 1.38 in
    d N/A .39 in N/A .55 in N/A .67 in N/A .87 in N/A 1.06 in
    H N/A .09 in N/A .09 in N/A .09 in N/A .10 in N/A .09 in