Page 8 of Medium Pressure Fittings by Parker Hannifin Corporation Instrumentation Products Division

Catalog 4234 8 Parker Hanni n Corporation Instrumentation Products Division Huntsville, AL USA www.parker.com/icd MPI Medium Pressure Fittings Tables 2, 3 and 4 list the maximum suggested working pressure of various tubing sizes, according to Acceptable tubing diameters and wall thicknesses are those for which a rating is listed. Combinations not have a pressure rating are not recommended for use with MPI Fittings. MPI Tubing MPI tubing is marked gMPIh and is designed to provide optimum performance for MPI ttings. MPI nominal OD }.003") 316 seamless stainless steel, cold drawn 1/8 hard (unannealed) tubing. Tensile approximately 40% higher than annealed tubing. Table 2 NOTE:Working pressures calculated using an allowable stress of 35,000 psi for 1/8 hard 316 stainless steel tubing with a minimum tensile strength of 105,000 psi. NOTE: Sizes 3/4" 1" require hydraulic presetting when used with MPI ttings. *Consult factory for pressure tables regarding other materials. Tube Nominal Nominal Working MPI Size (in.) OD (in.) ID (in.) Pressure Tube Part No. 1/4 .250 .125 15,000 4-240 MPITUBE-SS-15K 3/8 .375 .216 15,000 6-240 MPITUBE-SS-15K 9/16 .562 .344 15,000 9-240 MPITUBE-SS-15K 3/4 .750 .469 15,000 12-240 MPITUBE-SS-15K 1 1.000 .656 12,500 16-240 MPITUBE-SS-15K 316 Stainless Steel (Seamless/Unannealed 1/8 Hard) Cone Thread Tubing Cone Thread (C T) tubing is available as 1/8 hard 316 seamless stainless steel tubing and is with existing C T ttings. C T tubing has an undersized OD by as much as .010" to better facilitate and threading operations required for use with C T ttings. MPI ttings work effectively with C T listed below but require hydraulic presetting for optimum performance. Table 3 Tube Max Nominal Working Tube Max Nominal Working Size OD ID Pressure Size OD ID Pressure (in.) (in.) (in.) (PSI) (in.) (in.) (in.) (PSI) 1/4 .250 .109 12,500 9/16 .562 .359 10,000 3/8 .375 .203 12,500 3/4 .750 .516 10,000 9/16 .562 .312 12,500 1 1.000 .688 10,000 316 Stainless Steel (Undersized OD, Seamless (Unannealed 1/8 Hard) .065 .083 .095 .109 .120 .134 .156 .188 .220 1/4 10,300 13,300 3/8 6,600 8,600 10,000 11,700 1/2 6,700 7,800 9,100 10,000 11,400 3/4 5,800 6,400 7,300 8,600 10,600 1 4,700 5,300 6,200 7,700 9,200 Table 4 Tube OD Size (in.) Instrumentation Grade Heavy Wall Tubing 316 Stainless Steel (Seamless/Annealed) NOTE:Working pressures calculated using an allow able stress of 20,000 psi for annealed 316 stainless steel tubing with a nominal O.D. tolerance of .005".

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