In by Jackie Dunn

Rigid plastic pipe used in plumbing and water supply systems, where code permits its use and installation.

chlorinated polyvinyl chloride
CPVC (Wikipedia)
Chlorinated polyvinyl chloride
Other names
Abbreviations CPVC, PVC-C
  • none
ECHA InfoCard 100.122.975
for 67% Cl Polymer:(C9H11Cl7)n
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chlorinated polyvinyl chloride
Type Thermoplastic
Physical properties
Density (ρ) 1.56 g/cm3
Water absorptionEquilibrium (ASTM) 0.04–0.4
Mechanical properties
Young's modulus (E) 2.9–3.4 GPa
Tensile strengtht) 50–80 MPa
Elongation (ε) at break 20–40%
Notch test 2–5 kJ/m2
Thermal properties
Melting temperature (Tm) 150 °C[citation needed]
Glass transition temperature (Tg) 106–115 °C
Vicat softening point—50 N (Vicat B) 106 to 115 °C
Thermal conductivity (k) 0.16 W/(m·K)
Linear thermal expansion coefficient (α) 8×10−5K−1
Specific heat capacity (c) 0.9 kJ/(kg·K)

2.50–3.02 $/ft

0.5–1.25 €/kg
CPVC sprinkler pipe inside a firestop mock-up

Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin, which is significantly more flexible and can withstand higher temperatures than standard PVC. Uses include hot- and cold-water pipes and industrial liquid handling. CPVC, as PVC, is deemed safe for the transport and use of potable water, potable meaning water used for drinking, cooking, and bathing.

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