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CPVC Pipes - Operating and Collapsing Pressures vs. Schedule and Size

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

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Maximum operating and collapsing pressures at 70^oF (21^oC) 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)
Nominal Pipe Size (inches)	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 - 200^oF (93^oC) - the strength is derated to approximately 20% of the strength at 73^oF (23^oC).

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

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Related Topics

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

Related Documents

ASME B31.9 Building Services Piping - Working Pressure and Temperature Limits - The working pressure and temperature limits of ASME Code B31.9 - Building Services Piping.
ASTM D1785 and ASTM F441 - PVC and CPVC Pipes Schedule 40 & 80 - Standard dimensions and weight of PVC - Polyvinyl Chloride - and CPVC - Chlorinated Polyvinyl Chloride.
ASTM D2846 - CPVC Plastic Hot and Cold Water Distribution Tubes - Dimensions - Dimensions of CTS - Copper Tube Sized CPVC (Chlorinated Poly Vinyl Chloride) tubes.
CPVC - Chemical Resistance - Chemical resistance of CPVC - Chlorinated Poly (Vinyl Chloride) - to common chemicals and products.
CPVC Pipes - Hanger Spacing - Maximum distance between CPVC pipe supports.
CPVC Tubes - Pressure and Temperature Ratings - CTS (Copper Tube Sized) CPVC (Chlorinated Poly Vinyl Chloride) tubes temperature and pressure ratings.
CTS (Copper Tube Sized) and CPVC Tubes - Friction Loss vs. Water Flow - Volume flow and pressure loss in CTS - Copper Tube Sized CPVC (Chlorinated Poly Vinyl Chloride) tubes.
Plastic Pipes - Friction Head Loss vs. Water Flow - Friction head loss (ft/100 ft) vs. water flow in plastic pipes like PVC, PP, PE or PEH.
Plastic Pipes - Maximum Operating Temperatures - Piping materials like ABS, PE, PVC, CPVC, PB, PP and SR and pressure and operating temperature limits.
PVC, CPVC, Carbon Steel, Stainless Steel and Fiberglass Pipes - Thermal Expansion Diagrams - Thermal expansion of PVC, CPVC, Carbon and Stainless Steel and Fiberglass pipes.
Thermoplastic Pipes - Supporting Distances vs. Temperature - Maximum space between supports for PVC, CPVC, PVDF and PP pipes vs. temperature.
Water Hammer - Rapidly closing or opening valves - or starting stopping pumps - may cause pressure transients in pipelines known as surge or water hammers.

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Engineering ToolBox, (2008). CPVC Pipes - Operating and Collapsing Pressures vs. Schedule and Size. [online] Available at: https://www.engineeringtoolbox.com/cpvc-pipes-pressures-d_240.html [Accessed Day Mo. Year].

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