# Steam Pressure Loss through Piping

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

## Steam Pressure Loss through Piping formula

$$\large{ p_l = \frac{ \mu \; l \; v_s{^2} }{ 24 \; d \; g \; \upsilon } }$$
Symbol English Metric
$$\large{ p_l }$$ = steam pressure loss $$\large{\frac{lbf}{in^2}}$$ $$\large{Pa}$$
$$\large{ \mu }$$  (Greek symbol mu) = friction coefficient of steam $$\large{dimensionless}$$
$$\large{ g }$$  = gravitational acceleration $$\large{\frac{ft}{sec^2}}$$ $$\large{\frac{m}{s^2}}$$
$$\large{ l }$$ = length of pipe $$\large{ ft }$$ $$\large{ m }$$
$$\large{ d }$$ = pipe inside diameter $$\large{in}$$ $$\large{mm}$$
$$\large{ \upsilon }$$  (Greek symbol upsilon) = specific volume of steam $$\large{\frac{ft^3}{lbm}}$$ $$\large{\frac{m^3}{kg}}$$
$$\large{ v_s }$$ = steam velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$