CPVC Pipe

cpvc pipeGF Harvel CPVC pipe is produced from a specialty blend of CPVC material with unique physical properties desirable for piping applications (i.e., improved impact resistance and good fire resistance capabilities).

The CPVC product line includes schedules 40 and 80 piping from 1/4" through 24" diameters. GF Harvel CPVC piping systems can handle more than three-fourths of the temperature/pressure requirements of today’s typical process plants. CPVC pressure pipe has an upper working temperature limit of 200°F (93°C), or approximately 60°F (15°C) above that of Type I Grade I PVC. As with all thermoplastic piping systems, CPVC’s ability to withstand pressure varies with pipe diameter, wall thickness, and temperature. For pressure piping applications it is recommended for temperatures as high as 200°F (93°C) when appropriate temperature de-rating factors are applied. As the pipe diameter and temperature increases, the pressure rating of the product decreases. For example, 1/2" Schedule 80 CPVC pipe is engineered for continuous service of 850 psi @ 73°F (23°C). The same pipe in service @ 180°F (82°C) carries a maximum working pressure rating of 210 psi at this temperature. 6" Schedule 80 CPVC pipe is designed for 270 psi @ 73°F, and 54 psi @ 200°F.

 

CPVC Pipe Physical Properties
GENERAL Value Test Method
Cell Classification 23447 ASTM D1784
Maximum Service Temp. 200°F  
Color Medium Gray  
Specific Gravity, (g/cu.cm @ 73°F) 1.53 ± 0.02 ASTM D792
Water Absorption % increase 24 hrs @ 25°C 0.03 ASTM D570
Hardness, Rockwell 117 ASTM D785
Poisson's Ratio @ 73°F 0.386  
Hazen-Williams Factor C =150  
MECHANICAL
Tensile Strength, psi @ 73°F 7,600 ASTM D638
Tensile Modulus of Elasticity, psi @ 73°F 370,000 ASTM D638
Flexural Strength, psi @ 73°F 12,500 ASTM D790
Flexural Modulus, psi @ 73°F 360,000 ASTM D790
Compressive Strength, psi @ 73°F 10,000 ASTM D695
Compressive Modulus, psi @ 73°F 196,000 ASTM D695
Izod Impact, notched, ft-lb/in @ 73°F 2.6 ASTM D256
THERMAL
Coefficient of Linear Expansion (in/in/°F) 3.9 x 10-5 ASTM D696
Coefficient of Thermal Conductivity
   (Cal.)(cm)/(cm2)(Sec.)(°C)
   BTU/in/hr/ft.2/°F
   Watt/m/°K
3.27 x 10-4
.95
0.137
ASTM C177
Heat Deflection Temperature Under Load (264psi, Annealed) 228°F ASTM D648
ELECTRICAL
Dielectric Strength, volts/mil 1,250 ASTM D149
Dielectric Constant, 60Hz, 30°F 3.70 ASTM D150
Volume Resistivity, ohm/cm @ 73°F 3.4 x 1015 ASTM D257
Power Factor, 1000Hz 0.007% ASTM D150
GF Harvel CPVC Pipe is non-electrolytic
FIRE PERFORMANCE
Flammability Rating V-0, 5VB, 5VA UL-94
Flame Spread Index <10  
Flame Spread <25 ASTM E-84/UL 723
  <25 ULC
Smoke Generation ≤50 ASTM E-84/UL 723
  <50 ULC
Flash Ignition Temp. 900°F  
Average Time of Burning (sec.) <5 ASTM D635
Average Extent of Burning (mm) <10  
Burning Rate (in/min) Self Extinguishing
Softening Starts (approx.) 295°F  
Material Becomes Viscous 395°F  
Material Carbonizes 450°F  
Limiting Oxygen Index (LOI) 60 ASTM D2863
Clean Room Materials Flammability Test FPI= 1.20   SDI= 0.09 FM 4910
Note: The physical properties shown are considered general CPVC physical properties. GF Harvel utilizes several CPVC compounds for the production different CPVC product lines. Different CPVC compounds may exhibit slight variations in actual physicals properties as compared to those stated. Contact GF Harvel Tech Services for additional information if necessary.