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Support Spacing Pp Pipes

Reference data and engineering information about support spacing pp pipes for fluid mechanics applications.

supportspacingpipes

Overview

Engineering reference data for Support Spacing Pp Pipes in fluid mechanics.

Key Formulas

Reynolds Number

Re=ρvDμRe = \frac{\rho v D}{\mu}

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

P+12ρv2+ρgh=constP + \frac{1}{2}\rho v^2 + \rho g h = \text{const}

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

A1v1=A2v2A_1 v_1 = A_2 v_2

Conservation of mass for incompressible flow.

Darcy-Weisbach

ΔP=fLDρv22\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}

Pressure drop due to friction in a pipe.

Variables

SymbolDescriptionUnit
ReReReynolds number
ρ\rhoFluid densitykg/m³
vvFlow velocitym/s
DDCharacteristic dimensionm
μ\muDynamic viscosityPa·s
PPPressurePa
ffDarcy friction factor

Support Spacing Data

The maximum spacing between supports for Polypropylene (PP) pipes decreases as the operating temperature increases. This is due to the material's reduced strength and increased flexibility at higher temperatures. The data below is for horizontal pipes carrying fluids.

7 rows
Maximum Support Spacing for PP Pipes - Schedule 40 (feet)
NPS (inches)
60°F(feet)
100°F(feet)
140°F(feet)
180°F(feet)
1/21.51.51.51
3/4221.51.5
12221.5
1 1/42.5222
1 1/22.52.522
232.52.52
33.52.532.5

Source: engineeringtoolbox.com

7 rows
Maximum Support Spacing for PP Pipes - Schedule 80 (feet)
NPS (inches)
60°F(feet)
100°F(feet)
140°F(feet)
180°F(feet)
1/22221.5
3/42.52.522
12.52.522
1 1/432.52.52.5
1 1/2332.52.5
23.5332.5
3443.53.5

Source: engineeringtoolbox.com

Unit Conversion Formulas

These formulas allow for conversion between common imperial and metric units used in piping engineering.

Length (m)=Length (ft)×0.3048\text{Length (m)} = \text{Length (ft)} \times 0.3048 T(C)=59(T(F)32)T(^{\circ}C) = \frac{5}{9} \left( T(^{\circ}F) - 32 \right)

Material Properties

Polypropylene (PP) is a thermoplastic polymer valued for its:

  • Chemical Resistance: Unusually resistant to a wide range of chemical solvents, bases, and acids.
  • Application Versatility: Used in a wide variety of industrial, commercial, and residential applications.

Interactive Charts

Thermoplastic Pipes - Support Distance vs. Temperature

Maximum Support Spacing for PP Pipes - Schedule 80 (feet)

References