What is Chlorinated Polyvinyl Chloride (CPVC)?

March 15,2023

Chlorinated Polyvinyl Chloride (CPVC)

chlorinated polyvinyl chloride (CPVC) is a thermoplastic material that is made by adding chlorine to PVC. This process gives CPVC higher temperature performance and improves its fire and corrosion resistance.

CPVC is used in a wide variety of applications across industries. Growing use in pipes & fittings, fire sprinkler systems, and adhesives & coatings is anticipated to boost production during the forecast period.

Chlorinated <a class='inkey' href='' target='_blank'>polyvinyl chloride piping</a> (CPVC)


CPVC Pipes & Fittings

CPVC, or chlorinated polyvinyl chloride, is a plastic pipe material commonly used for water supply lines within the home. It can replace galvanized steel or copper pipes and is easier to install than both metals.

CPVC is cheaper and easier to work with than both metals. It also doesn't rust or break down when exposed to harsh chemicals in the water. It also resists bacterial and biofilm buildup, which is a common concern among water distribution systems.

As an alternative to metal piping, CPVC is a more versatile option for many types of commercial and industrial applications, including plumbing and HVAC. It can be installed and shaped easily with standard tools and is widely accepted by plumbing codes.

In the process of making CPVC, chlorine is added to the plastic. This makes the plastic more resistant to chemicals, makes it stronger and makes it last longer. Also, adding chlorine makes it able to handle higher temperatures, which makes it less likely to leak.

Unlike PVC, CPVC can handle temperatures up to 200 degrees before it softens, making it ideal for applications that are exposed to higher temperatures and pressures. Even though CPVC is stronger than it used to be, it can still bend and break, so the pipe needs to be supported every three feet or so.

There are several types of cpvc resin pipes and fittings available to homeowners, including nontoxic Schedule 80 CPVC pipes. It is available in straight lengths, as well as elbows, tees, and valves. Tees split a single line into two separate lines, while valves provide dedicated shut-offs for individual lines.

Flanges are used to connect pipes. They are usually safe, but some are made to be used with chlorine-based chemicals used to treat water. They can have sockets or slip flanges, and solvent cement can be used to hold them in place.

Socket-pressure flanges slip over pipes and have thicker walls than Schedule 40 flanges. These flanges are often used for small-diameter, high-pressure requirements. They are available with either a raised face, a flat face, or RTJ (ring-type joint) facing.

These flanges are typically welded to a threaded pipe for a secure connection, but they can be made without a welded connection with a van stone flange. The ring of the van stone flange allows for bolt alignment, which is not possible with one-piece flanges.

Since the 1950s, plastic water pipes have been the material of choice for plumbers and home builders. Easy to install and economical, plastic plumbing pipes are commonly made from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) and polybutylene (PB).


Adhesives and Coatings

Chlorinated Polyvinyl Chloride (CPVC) is a thermoplastic material that is commonly used in the construction industry for its superior fire and corrosion resistance. This plastic is ideal for self-supporting constructions and can be welded, molded, and assembled. The material also displays good mechanical, chemical, and dielectric properties, and it is available in a wide variety of rods, sheets, and tubing.

CPVC pipes are commonly used in commercial and residential buildings for water distribution, heating, and cooling. They are also used in fire sprinkler systems to help people get out of danger quickly and safely in case of a fire. CPVC fire sprinklers are available in a range of sizes and shapes to suit any building application. They are approved for use in schools, high-rise buildings, churches, and hospitals.

As a result of its excellent solubility and electrical insulating property, CPVC is used as an ingredient in adhesives and coatings. It is easily soluble in organic solvents such as ketones, esters, and aromatic hydrocarbons. In addition, it is a good choice for anti-corrosion coatings due to its waterproof properties.

The global market for CPVC is projected to grow from USD 2.02 billion in 2017 to USD 3.06 billion by 2030, at a CAGR of 5.1% from 2017 to 2030. Increasing demand for CPVC in the pipe, pipe fittings, power cable casing, coatings, and adhesives industries across the globe are expected to drive market growth.

In addition, rising infrastructure development activities in countries like India and China are boosting market growth in the Asia-Pacific region. These factors will continue to fuel the market's growth over the forecast period.

Another key factor driving the market growth is the growing number of building and construction projects globally. This will encourage the production of various CPVC products and increase the market's size.

The market for CPVC is highly fragmented. The major players operating in the industry include Hangzhou Electrochemical Group Co., Ltd., KEM One, Lubrizol Corporation, Novista Group, Avient Corporation, Kaneka Corporation, Jiangsu Tianteng Chemical Industry, BASF SE, Sekisui Chemical, and Shandong Xiangsheng New Materials Technology.

CPVC is a white or light yellow plastic that is obtained through chlorination modification with polyvinyl chloride (PVC). It can be classified as injection- and extrusion-grade based on the K-value of PVC and chlorine content. It is non-toxic and odorless.


Chlorinated Polyvinyl Chloride (CPVC) is a common type of plastic that is used in pipes and fittings, adhesives, coatings, and fire sprinkler systems. CPVC can be found in a variety of shapes, sizes, and colors and is widely used in industrial applications due to its superior corrosion resistance. It also offers a wide range of properties, such as high heat deflection temperature, outstanding glass transition temperature, chemical inertness, and fire and smoke resistance.

CPVC is a homopolymer that has undergone a free radical chlorination reaction, utilizing either thermal or UV energy to initiate the process. Chlorine is then added to the resin in the form of a slurry or fluidized bed. In a post-production step, the chlorinated resin is then compounded with other materials to achieve the desired characteristics.

This reaction increases the chlorine content of CPVC, which allows it to withstand higher pressures and temperatures. In addition, CPVC is resistant to acids and alkalis.

Another advantage of CPVC is its toughness, which makes it suitable for jobsite applications. This durability is a major factor in its adoption as a plumbing material. In fact, CPVC is the most commonly used pipe material for potable water.

Some of the most popular CPVC grades are Durastream and Duratec, both of which have excellent performance qualities, such as fire and smoke resistance, chemical inertness, and low permeability to air. Despite these features, CPVC does not have the same strength as metal pipe and is not recommended for indoor use because it can become brittle in cold weather.

Increasing demand for CPVC for construction applications is expected to drive the global market for this material. This is attributed to its increased application in the wastewater treatment industry and increasing urbanization in developing countries, such as India and China. In addition, the growing popularity of CPVC in residential areas is expected to contribute to the growth of this market.

CPVC has a high resistance to acids and alkalis, which makes it a preferred choice for the construction of wastewater treatment plants. Moreover, the product is relatively inexpensive and environmentally friendly. It is also suited for self-supporting constructions, such as tanks and scrubbers. It is also a versatile and durable piping material that can be shaped, bent, and welded to suit the needs of numerous different applications.

Fire Sprinkler Systems

CPVC fire sprinkler systems are an important way to protect buildings and their occupants in the event of a fire. When installed correctly, they can keep a building safe from the dangers of fire and smoke without stopping or even slowing down the flow of essential services like electricity and water to emergency evacuation zones.

While steel pipe is typically the material of choice for fire sprinkler systems, CPVC has come to be a viable alternative in recent years, offering a number of benefits that make it a good choice for a wide range of applications. For one, it’s easier and less expensive to install than steel. This means that a contractor can have the system completed in a fraction of the time.

Another major benefit is that CPVC is more flexible than steel. This allows for easier installation in tight spaces, such as soffits and walls. Additionally, CPVC is lightweight and does not require the use of power sources or open-frame torches.

Aside from being easier and cheaper to install, CPVC is also a more sustainable material than steel. It requires less energy to produce and transport than steel, which saves both money and the environment.

As an added bonus, CPVC fire-sprinkler systems are also more flexible than metal. This means that a CPVC-based system can be configured to optimize the placement of pipes and fittings throughout a space, saving building owners or managers time and money.

For a fire-sprinkler system to work well, it needs to be installed properly and according to industry and building codes. This is particularly important in a commercial setting where fire code requirements are often complex and challenging to meet.

Installers of fire sprinklers must, among other things, use a ratchet cutter or power saw to make sure that all pipes and fittings are cut squarely. This will help to prevent a misconnection between the pipe and its fittings that can cause leaks.

In addition, fire sprinkler installers should never handle CPVC fire sprinkler pipes or components in a manner that can damage them. This includes never throwing them to the ground or dragging them from one place to another.