EN 1401 PVC Pipes Underground Drainage Sewerage

Reference data and engineering information about en 1401 pvc pipes underground drainage sewerage for fluid mechanics applications.

1401PVCpipesunderground

Overview

Engineering reference data for EN 1401 PVC Pipes Underground Drainage Sewerage in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

Symbol	Description	Unit
$Re$	Reynolds number	—
$\rho$	Fluid density	kg/m³
$v$	Flow velocity	m/s
$D$	Characteristic dimension	m
$\mu$	Dynamic viscosity	Pa·s
$P$	Pressure	Pa
$f$	Darcy friction factor	—

Pipe Dimensions

11 rows

Dimensional specifications for PVC-U pipes according to EN 1401. The Mean Outside Diameter is controlled within a tight tolerance range (min-max) to ensure consistent system compatibility and joint performance.
Nominal Size DN/OD(mm)	Nominal Outside Diameter(mm)	Mean Outside Diameter (min)(mm)	Mean Outside Diameter (max)(mm)
110	110	110	110.3
125	125	125	125.3
160	160	160	160.4
200	200	200	200.5
250	250	250	250.5
315	315	315	315.6
400	400	400	400.7
500	500	500	500.9
630	630	630	631.1
800	800	800	801.3
1000	1000	1000	1001.6

Source: EN 1401

Interactive Charts

Piping Materials - Temperature Expansion Coefficients

References

Original Source

Source: engineeringtoolbox.com