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 handlemore
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Item #

Connection Type

High Pressure Adapter

MPI™ Size

A

B

D

T Thread

W HEX

N/A Straight Thread to MPI™ N/A 1/4 N/A 1/4 N/A 2.25 in N/A .72 in N/A 1.03 in N/A 9/16 - 18 N/A 5/8 in
N/A Straight Thread to MPI™ N/A 1/4 N/A 3/8 N/A 2.71 in N/A .72 in N/A 1.37 in N/A 9/16 - 18 N/A 3/4 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 1/4 N/A 2.52 in N/A .92 in N/A 1.10 in N/A 3/4 - 16 N/A 13/16 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 3/8 N/A 2.92 in N/A .92 in N/A 1.37 in N/A 3/4 - 16 N/A 13/16 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 9/16 N/A 3.37 in N/A .92 in N/A 1.70 in N/A 3/4 - 16 N/A 1 1/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 3/8 N/A 3.12 in N/A 1.13 in N/A 1.37 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 9/16 N/A 3.58 in N/A 1.13 in N/A 1.70 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 5/8 N/A 3.69 in N/A 1.13 in N/A 1.81 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 3/4 N/A 4.03 in N/A 1.13 in N/A 2.02 in N/A 1 1/8 - 12 N/A 1 3/8 in
N/A Straight Thread to MPI™ N/A 1/4 N/A 1/4 N/A 2.25 in N/A .72 in N/A 1.03 in N/A 9/16 - 18 N/A 5/8 in
N/A Straight Thread to MPI™ N/A 1/4 N/A 3/8 N/A 2.71 in N/A .72 in N/A 1.37 in N/A 9/16 - 18 N/A 3/4 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 1/4 N/A 2.52 in N/A .92 in N/A 1.10 in N/A 3/4 - 16 N/A 13/16 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 3/8 N/A 2.92 in N/A .92 in N/A 1.37 in N/A 3/4 - 16 N/A 13/16 in
N/A Straight Thread to MPI™ N/A 3/8 N/A 9/16 N/A 3.37 in N/A .92 in N/A 1.70 in N/A 3/4 - 16 N/A 1 1/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 3/8 N/A 3.12 in N/A 1.13 in N/A 1.37 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 9/16 N/A 3.58 in N/A 1.13 in N/A 1.70 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 5/8 N/A 3.69 in N/A 1.13 in N/A 1.81 in N/A 1 1/8 - 12 N/A 1 3/16 in
N/A Straight Thread to MPI™ N/A 9/16 N/A 3/4 N/A 4.03 in N/A 1.13 in N/A 2.02 in N/A 1 1/8 - 12 N/A 1 3/8 in
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