Page 35 - CorrugatedCatalog110913Rev8LR

Pressure Drop
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Pressure drop in a piping system is often a concern for the designer. Compared to rigid pipe, there is
always a greater pressure drop in corrugated metal hose. The following graphs are offered as aids in
estimating pressure drop in corrugated hose conveying water and air. The values derived are
approximate and apply only to straight-line installations. Bends and fttings can increase the
pressure drop.
Pressure Drop (PSI Per Foot)
Pressure Drop (PSIG Per Foot)
at 100 PSIG Air Inlet Pressure
Pressure Drop Graph for Water
Pressure Drop Graph for Air
Fluid Velocity (Gals. Per Minute) Water at 70° F.
Cubic Feet Per Minute of Free Air at 60° F.
For Air Inlet Pressures Other Than 100 PSIG: P.D. = P.D. @ 100 PSIG ( )100 + 14.7
P + 14.7
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