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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 handlemore
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Item #

Connection Type

MPI™ Size #1

MPI™ Size #2

NPT Thread #3

A

C1

C2

H

W Th’k

Working MAWP Pressure

N/A MPI™ x MPI™ x FNPT N/A 1/4 N/A 1/4 N/A 1/4 - 18 N/A 3.47 in N/A 1.74 in N/A 1.74 in N/A 1.24 in N/A 3/4 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/8 N/A 3/8 N/A 1/4 - 18 N/A 3.72 in N/A 1.86 in N/A 1.86 in N/A 1.24 in N/A 3/4 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/8 N/A 3/8 N/A 1/2 - 14 N/A 3.88 in N/A 1.94 in N/A 1.94 in N/A 1.54 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 1/2 N/A 1/2 N/A 1/2 - 14 N/A 4.45 in N/A 2.22 in N/A 2.22 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 9/16 N/A 9/16 N/A 1/2 - 14 N/A 4.57 in N/A 2.29 in N/A 2.29 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/4 N/A 3/4 N/A 1/2 - 14 N/A 5.64 in N/A 2.82 in N/A 2.82 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 1 N/A 1 N/A 3/4 N/A 7.26 in N/A 3.63 in N/A 3.63 in N/A 2.50 in N/A 1 3/4 in N/A 10000 psig
N/A MPI™ x MPI™ x FNPT N/A 1/4 N/A 1/4 N/A 1/4 - 18 N/A 3.47 in N/A 1.74 in N/A 1.74 in N/A 1.24 in N/A 3/4 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/8 N/A 3/8 N/A 1/4 - 18 N/A 3.72 in N/A 1.86 in N/A 1.86 in N/A 1.24 in N/A 3/4 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/8 N/A 3/8 N/A 1/2 - 14 N/A 3.88 in N/A 1.94 in N/A 1.94 in N/A 1.54 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 1/2 N/A 1/2 N/A 1/2 - 14 N/A 4.45 in N/A 2.22 in N/A 2.22 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 9/16 N/A 9/16 N/A 1/2 - 14 N/A 4.57 in N/A 2.29 in N/A 2.29 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 3/4 N/A 3/4 N/A 1/2 - 14 N/A 5.64 in N/A 2.82 in N/A 2.82 in N/A 1.94 in N/A 1 3/8 in N/A 15000 psig
N/A MPI™ x MPI™ x FNPT N/A 1 N/A 1 N/A 3/4 N/A 7.26 in N/A 3.63 in N/A 3.63 in N/A 2.50 in N/A 1 3/4 in N/A 10000 psig
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