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wl_59_78pg 9/1/01 11:09 AM Page 67 TechnicalData Technical Information (Working Pressure Derating Factor) To calculate a working pressure derated for elevated temperature, multiply the hose working pressure shown in the catalog by the appropriate derating factor below. Note: The working pressure of an assembly at elevated temperatures may be affected by fitting type, material, and method of attachment. Working Pressure Derating Factor Temperature Carbon in Degrees F T321/T316L T304 276 Steel Bronze 70 1.00 1.00 1.00 1.00 1.00 150 .97 .96 1.00 .99 .92 200 .94 .92 1.00 .97 .89 250 .92 .91 1.00 .96 .86 300 .88 .86 .94 .93 .83 350 .86 .85 .92 .91 .81 400 .83 .82 .90 .87 .78 450 .81 .80 .90 .86 .75 500 .78 .77 .89 .81 600 .74 .73 .84 .74 700 .70 .69 .79 .66 800 .66 .64 .76 .52 900 .62 .58 .74 .50 1000 .60 .72 1100 .58 .49 1200 .55 .32 1300 .50 1400 .44 1500 .40 Technical Information (Velocity in Metal Hose) When gas or liquid being conveyed in a corrugated metal hose exceeds certain limits, resonant vibration can occur. Resonance may cause very rapid failure of the assembly. In those applications where product velocities exceed the limits shown in the graph below, a revision of the assembly design might include: 1. Addition of an interlocked metal hose liner 2. An increase in the corrugated hose I.D. 3. A combination of the above 67
Goodyear Rubber Products
