OPUS

Process Piping: CPVC Pipe

Process piping involves non-hydronic mechanical systems in industrial or manufacturing...
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Chlorinated Polyvinyl Chloride (CPVC) is a thermoplastic pipe and fitting system made with CPVC...
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Benefit of Material to Systems Application

CPVC pipe has been used in industrial processing applications for over 40 years. It is popular because it is economical both in maintenance and installation, and it stands up well in harsh conditions. The reduction of pipe size and also system pump size can be considered when using CPVC because it has a lower friction coefficient than metal pipe. CPVC pipe can withstand higher temperatures than PVC pipe, usually up to 200°F in pressure applications. The chlorine atoms in its chemical make-up increase its resistance to oxidation which can breakdown the chemical structure in other plastic piping materials.  

Some industrial CPVC piping systems are blended with ultraviolet blocking agents to help protect the polymer backbone from the effects of ultraviolet radiation (UV). Check with the pipe and fitting manufacturer for specific installation requirements when the piping system will be exposed to UV.

System Application and Material Usage

CPVC pipe for industrial applications is typically available in sizes up to 24 inches in Schedule 40 and Schedule 80 dimensions. Schedule designations indicate the pressure capacity of the pipe. For example, 2 inch CPVC Schedule 80 pipe has a maximum operating pressure of 400 psi at 73°F. Manufacturers will have data available for specific pressure values for each size pipe.

Installing CPVC piping systems does not require any special tools. Because of the lightness of the material and quicker joining methods, installation time can be dramatically less than metal piping systems. Two-step solvent cement and primer is used to join pipe, fittings, and adapters. Adapters are available for connecting to threaded, flanged or grooved piping systems. It is important to use the correct solvent cement for joining CPVC, as an unapproved product could react with the chemicals in the system. Threaded connections work well for low pressure applications using heavier pipe such as Schedule 80, but should be avoided in thinner wall piping systems.

It is important to use hydrostatic methods when pressure testing CPVC piping systems. Typical test pressures are one and a half times working pressure. 

Hanger spacing is determined by the pipe size and operating temperature of the system. Metal hangers such as double-bolt pipe clamps, anchor straps, split ring hangers, clevis hangers, adjustable swivel rings and roller hangers work well for this application. Be sure to allow for expansion because plastic pipe expands up to five times as much as metal pipe during temperature fluctuations.

Manufacturers and Suppliers Participating in OPUS

ANVIL International

Anvil International offers a full line of domestically-produced iron fittings, steel nipples,......
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Embassy Group LTD

Embassy Group LTD is a 100-percent member owned, 3.2 billion dollar corporation consisting of......
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F.W. Webb Company

F.W. Webb Company is a multi-faceted distributor of plumbing and heating, HVAC and controls,......
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Ferguson

Ferguson specializes in providing PVF, Plumbing, HVAC and Related Specialty Products and......
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Galloup Company

J.O. Galloup Company is a premier distributor of commercial and industrial piping products,......
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MORSCO

MORSCO is a leading U.S. distributor of commercial and residential plumbing, HVAC, and PVF, with......
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NIBCO INC.

NIBCO Inc. is a recognized industry leader of flow control solutions to the residential and......
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Weldbend Corporation

Weldbend Corporation is a manufacturer of carbon steel welding fittings and forged steel......
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