11 Dr i l l i ng Application: Construction: Temperature: Fittings: Low-pressure, high-temperature return line or suction line for petroleum- and water-based hydraulic fluids. Vacuum rating 25 in Hg. HR4 with half the bend radius of typical SAE 100R4. Nitrile inner tube with spiral-plied synthetic fabric with wire helix covered with black neoprene. -40 ˚F to 275˚F (-40˚C to 135˚C) A complete line of hydraulic fittings to meet your application requirements. Descriptive Number Hose Size I.D. Hose O.D. Max. Working Pressure Min. Bend Radius Min. Burst Pressure Weight in. mm. in. mm. psi Mpa in. mm. psi Mpa lb./ft. HR4-12 3/4 19.0 1.37 34.9 300 2.1 2.5 64 1200 8.3 0.53 HR4-16 1 25.4 1.63 41.3 250 1.7 3.0 76 1000 6.9 0.65 HR4-20 1¼ 31.8 2.00 50.8 200 1.4 4.0 102 800 5.5 0.80 HR4-24 1½ 38.1 2.25 57.2 150 1.0 5.0 127 600 4.1 0.91 HR4-32 2 50.8 2.75 69.9 100 0.7 6.0 152 400 2.8 1.18 HR4-40 2½ 63.5 3.25 82.6 62 0.4 7.0 188 250 1.7 1.72 HR4-48 3 76.2 3.75 95.3 56 0.4 9.0 229 225 1.6 2.03 HR4-56 3½ 89.0 4.25 107.9 45 0.3 10.5 267 180 1.2 2.42 HR4-64 4 101.6 4.75 120.7 35 0.2 12 305 140 1.0 2.75 DESERT® HR4 SAE 100R4 Low Pressure high temperature resistance
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