What Is The Main Difference Between CPVC and PVC?

Today across India, the use of plastic pipe for a wide variety of applications is becoming increasingly common. Here are some of the basic facts about the plastic pipe to give a better understanding of where, how and why it should be considered for usage. Several aspects concerning construction issues of today will be addressed.

Types of Plastic

Polyvinyl Chloride (PVC)

PVC, also commonly referred to as Vinyl, is perhaps the most well-known and widely used of all plastics for pipe and fittings in construction today. PVC pipe manufacturers offer users one of the best balances of tensile strength versus economics being used for several kinds of pressure and non-pressure applications in both above-ground and underground applications.

PVC (Poly Vinyl Chloride) resin is derived from 2 natural resources of the earth, namely natural gas and salt. The natural gas derivative ethylene is combined with the chlorine component of salt to form the resin building block. The chlorine component is actually a by-product of a process whereby the sodium is being extracted from natural salt for use in caustic soda for soaps, detergents and other applications.

Being one of the more rigid plastics, PVC pipe manufacturers in India uses PVC as electrical conduit, process piping, commercial drains, irrigation piping and underground municipal piping such as water mains and sewers. It is commonly joined by means of solvent welding bell and spigot.

Other uses of Poly Vinyl Chloride in our daily lives include flooring, patio furniture, siding, medical tubing and small items such as debit cards and credit cards.

Chlorinated Polyvinyl-Chloride (CPVC)

CPVC is a second member of the vinyl family and is essentially a modified version of PVC. CPVC pipe manufacturers provide some extra chlorine in its molecule for enhanced resistance to chemicals and higher temperatures. Thus, the pipe is used for hot water supply, higher temperature applications in industrial facilities or for fire sprinkler piping in residential or light commercial applications.

Its properties are very similar to that of PVC by having rigidity and high tensile strength; however, it is typically 3-4 times more expensive than PVC. Many times, CPVC will remain competitive with metals or other specialty plastics for specialized chemical applications. It is normally joined using either solvent welding or by use of flanged joints.

The CPVC pipe manufacturers in India tubing provide an exceptionally wide range of fittings to meet every eventuality. There are 90° and 45° elbows, equal and unequal tees, reducing pieces, tap and ball-valve connectors, stop-valves and gate-valves, arid provision for connection to existing copper or screwed iron fittings. The connectors for copper tubing have a solvent-weld socket at one end and a conventional Type ‘A’ compression joint at the other. Those for iron fittings have a solvent-weld fitting at one end and either a male or female threaded joint at the other. If you are connecting a fitting to an existing iron socket, make sure that you render the screwed connection watertight by binding plastic PTFE tape around the male thread before screwing home.