CPVC Pipes - Operating and Collapsing Pressure Ratings

Maximum operating and bursting pressures of CPVC - Chlorinated Poly(Vinyl Chloride) - piping systems

Maximum operating and collapsing pressures at 70oF (21oC) for CPVC piping systems according

  • ASTM F441 / F441M - 02 Standard Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80
  • ASTM D2846 / D2846M - 06 Standard Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems

are indicated in the diagram and table below:

CPVC pipes - collapsing and operating pressure limits diagram

CPVC
Nominal Pipe Size
(inches)
Collapse Pressure
(psi)
Maximum Operating Pressure
(psi)
Schedule 40 Schedule 80 Schedule 40 Schedule 80
1/2 1605 2006 590 850
3/4 1219 1740 480 690
1 948 1628 450 630
1 1/4 511 1399 365 520
1 1/2 366 1034 330 470
2 213 653 275 400
2 1/2 276 758 300 420
3 179 521 260 370
4 108 334 220 320
6 54 214 180 280
8 37 146 160 250
10 27 125 140 230
12 22 116 130 230
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2)

Note! The maximum operating pressures derates with temperature. At the maximum operating temperature for CPVC - 200oF (93oC) - the strength is derated to approximately 20% of the strength at 73oF (23oC).

Be aware that maximum operating pressures varies with the fittings design. Consult the manufacturing data.

Related Topics

  • Pressure Ratings - Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more

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