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M22 G HPA - Graco Spray Guns

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this resistance: the (inside/internal) diameter and the pipe length. The pump will generate a pressure, strong enough<br />

<br />

overcome the original pressure drop.<br />

While it is hard to reduce the pipe length, it is relatively easy to select an appropriate internal pipe diameter.<br />

PRESSURE DROP CALCULATION<br />

Pressure<br />

loss (bar/m) =<br />

6.9 x Flow (l/min)x Viscosity (cps)<br />

D 4 (int dia in mm)<br />

Pressure<br />

loss (psi/Ft) =<br />

2.73 x Flow (gpm) x Viscosity (cps)<br />

D 4 (int dia in inches)<br />

FLOW RATE CALCULATION<br />

Flow (l/min) =<br />

Pressure loss (bar/m)x D 4 (int dia in mm)<br />

Pressure loss (psi/Ft)x D 4 (int dia in inches)<br />

Flow (gpm) =<br />

6.9 x Viscosity (cps) 2.73 x Viscosity (cps)<br />

PIPE DIAMETER CALCULATION<br />

Interior<br />

Dia (mm) =<br />

4<br />

6.9 x Flow (l/min) x Viscosity (cps)<br />

Pressure Loss (bar/m)<br />

Interior Dia (in) =<br />

4<br />

2.73 x Flow (gpm)x Viscosity (cps)<br />

Pressure loss (psi/Ft)<br />

<br />

223

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