HVAC Engineer's Handbook, Eleventh Edition [11 ed ...
d41 f2 d42 45 4 f1 3.4 10 d41 11 104 f2 d42 250 6.1 10 20 104 4 f1 d41 f2 d42 34 10 500 4 f1 d41 110 104 f2 d42 67 10 4 f1 220 104 d41 f2 d42 i1 i2 head loss in feet of oil per foot of pipe or metres of oil per metre of pipe.
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