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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.

  • Parker Instrumentation vent protectors (mud dauber fittings) protect open ends of instruments, tubing, outlet vents, etc.

    The mesh wire screen prevents foreign bodies such as insects or debris from entering and clogging various systems and causing damage.
    • pipe plug, bored-thru design
    • 40 x 40 mesh, 0.010 diameter wire screen
    • designed to vent female pipe, straights, elbows or tees.
    Vent Protector NPT Male Pipe Thread for fractional tube
    Unit of Measure
    1 

    Item #

    Connection Type

    Thread Size

    A

    R

    E Minimum Opening

    W HEX

    2 MDF N/A NPT N/A 1/8-27 N/A .63 in N/A .38 in N/A .19 in N/A 9/16 in
    4 MDF N/A NPT N/A 1/4-18 N/A .81 in N/A .56 in N/A .28 in N/A 9/16 in
    6 MDF N/A NPT N/A 3/8-18 N/A .81 in N/A .56 in N/A .41 in N/A 11/16 in
    8 MDF N/A NPT N/A 1/2-14 N/A 1.06 in N/A .76 in N/A .50 in N/A 7/8 in
    12 MDF N/A NPT N/A 3/4-14 N/A 1.13 in N/A .75 in N/A .63 in N/A 1 1/16 in
    16 MDF N/A NPT N/A 1-11-1/2 N/A 1.31 in N/A .94 in N/A .94 in N/A 1 3/8 in
    Unit of Measure
    1