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Parker Hannifin, original Patent Holder (US 6851729 B2), for "Tube Fitting, Medium Pressure" developed the MPI Medium Pressure compression fitting connections to be secure and gas-tight while being made manually (wrench turns) or hydraulic set tool. This connection has application throughout industry, including off-shore oil and gas exploration platforms, research labs, and other facilities that require operating pressures to 15,000 psi (1035 bar).

MPI™ Fittings are ideally suited to handle liquids, gases, or chemicals and can be used on a wide variety of tubing materials including: Instrument Grade thick-walled annealed 316 SS, 1/8th Hard (cold drawn) 316 or 317 SS MPI tubing, and 2507 Super Duplex MPI tubing up to 1" OD. Every Parker MPI™ Fitting is supplied complete with both ferrules and compression gland nut, ready to install.

NOTE:
  • Add to the part number either -SS or -2507 depending on selected material. (Example: 16-16 FBMP7-SS)
  • Assemble 1/4 to 1/2 turn from finger tight & lubricate threads & taper before each remake.
  • Dimensions in inches are for reference only, subject to change.
  • Pressure Rating of Fittings is controlled by tubing selected and choice of ASME Standard.
  • -XF Ferrules are required for 3/4" and 1" 316 SS or 2507 Super Duplex Tubing.
    • GM7 MPI™ Male End to Female NPT
    Unit of Measure
    1 2 

    Item #

    Connection Type

    MPI™ Male Thread

    Female NPT End

    A

    B

    NPT Thread

    W Hex

    Working MAWP Pressure

    4-4 GM7-SS N/A MPI™ to FNPT N/A 1/4 N/A 1/4 N/A 1.73 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    4-6 GM7-SS N/A MPI™ to FNPT N/A 1/4 N/A 3/8 N/A 1.83 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    6-4 GM7-SS N/A MPI™ to FNPT N/A 3/8 N/A 1/4 N/A 1.84 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    6-6 GM7-SS N/A MPI™ to FNPT N/A 3/8 N/A 3/8 N/A 1.94 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    6-8 GM7-SS N/A MPI™ to FNPT N/A 3/8 N/A 1/2 N/A 2.17 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    8-4 GM7-SS N/A MPI™ to FNPT N/A 1/2 N/A 1/4 N/A 2.05 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    8-6 GM7-SS N/A MPI™ to FNPT N/A 1/2 N/A 3/8 N/A 2.15 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    8-8 GM7-SS N/A MPI™ to FNPT N/A 1/2 N/A 1/2 N/A 2.37 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    9-4 GM7-SS N/A MPI™ to FNPT N/A 9/16 N/A 1/4 N/A 2.05 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    9-6 GM7-SS N/A MPI™ to FNPT N/A 9/16 N/A 3/8 N/A 2.15 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    9-8 GM7-SS N/A MPI™ to FNPT N/A 9/16 N/A 1/2 N/A 2.37 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    12-4 GM7-SS N/A MPI™ to FNPT N/A 3/4 N/A 1/4 N/A 2.17 in N/A .75 in N/A 1/4 - 18 N/A 1 1/4 in N/A 15000 psig
    12-6 GM7-SS N/A MPI™ to FNPT N/A 3/4 N/A 3/8 N/A 2.17 in N/A .75 in N/A 3/8 - 18 N/A 1 1/4 in N/A 15000 psig
    12-8 GM7-SS N/A MPI™ to FNPT N/A 3/4 N/A 1/2 N/A 2.59 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    4-4 GM7-2507 N/A MPI™ to FNPT N/A 1/4 N/A 1/4 N/A 1.73 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    4-6 GM7-2507 N/A MPI™ to FNPT N/A 1/4 N/A 3/8 N/A 1.83 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    6-4 GM7-2507 N/A MPI™ to FNPT N/A 3/8 N/A 1/4 N/A 1.84 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    6-6 GM7-2507 N/A MPI™ to FNPT N/A 3/8 N/A 3/8 N/A 1.94 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    6-8 GM7-2507 N/A MPI™ to FNPT N/A 3/8 N/A 1/2 N/A 2.17 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    8-4 GM7-2507 N/A MPI™ to FNPT N/A 1/2 N/A 1/4 N/A 2.05 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    8-6 GM7-2507 N/A MPI™ to FNPT N/A 1/2 N/A 3/8 N/A 2.15 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    8-8 GM7-2507 N/A MPI™ to FNPT N/A 1/2 N/A 1/2 N/A 2.37 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    9-4 GM7-2507 N/A MPI™ to FNPT N/A 9/16 N/A 1/4 N/A 2.05 in N/A .85 in N/A 1/4 - 18 N/A 1 in N/A 15000 psig
    9-6 GM7-2507 N/A MPI™ to FNPT N/A 9/16 N/A 3/8 N/A 2.15 in N/A .95 in N/A 3/8 - 18 N/A 1 1/8 in N/A 15000 psig
    9-8 GM7-2507 N/A MPI™ to FNPT N/A 9/16 N/A 1/2 N/A 2.37 in N/A 1.17 in N/A 1/2 - 14 N/A 1 3/8 in N/A 15000 psig
    Unit of Measure
    1 2