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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.
  • Tube adapter end is designed for use with Parker fittings or valves. Simply insert the tube adapter end until it bottoms and tighten the Parker nut 3/4 turns for sizes 3 and below, for sizes 4 and above 1-1/4 turns from finger tight.
  • Add -Z6 for assembly of nuts and ferrules on the tube stub end.
  • Connecting non-metal tubing to tube connections.
  • Barbed Connector to Tube Adapter for fractional tube
    Unit of Measure
    1 

    Item #

    Connection Type

    T1 Tube I.D.

    T2 Tube O.D.

    A

    E Bore

    H

    K

    W HEX

    2-2 B2HT2 N/A Barbed Connector to Tube N/A 1/8 in N/A 1/8 in N/A 1.16 in N/A .08 in N/A .53 in N/A .41 in N/A 5/16 in
    2-4 B2HT2 N/A Barbed Connector to Tube N/A 1/8 in N/A 1/4 in N/A 1.26 in N/A .08 in N/A .64 in N/A .41 in N/A 3/8 in
    4-4 B2HT2 N/A Barbed Connector to Tube N/A 1/4 in N/A 1/4 in N/A 1.64 in N/A .16 in N/A .64 in N/A .78 in N/A 3/8 in
    6-6 B2HT2 N/A Barbed Connector to Tube N/A 3/8 in N/A 3/8 in N/A 1.75 in N/A .16 in N/A .72 in N/A .88 in N/A 7/16 in
    2B2TU2 N/A Barbed Connector to Tube N/A 1/8 in N/A 1/8 in N/A 1.16 in N/A .08 in N/A .53 in N/A .41 in N/A 5/16 in
    2B2TU4 N/A Barbed Connector to Tube N/A 1/8 in N/A 1/4 in N/A 1.26 in N/A .08 in N/A .64 in N/A .41 in N/A 3/8 in
    4B2TU4 N/A Barbed Connector to Tube N/A 1/4 in N/A 1/4 in N/A 1.64 in N/A .16 in N/A .64 in N/A .78 in N/A 3/8 in
    6B2TU6 N/A Barbed Connector to Tube N/A 3/8 in N/A 3/8 in N/A 1.75 in N/A .16 in N/A .72 in N/A .88 in N/A 7/16 in
    Unit of Measure
    1