With the continuous advancement of industrialization and urbanization, CPVC (chlorinated polyvinyl chloride) pipes and fittings play an increasingly important role in modern building and industrial piping systems. In particular, 3/4-inch (20mm) CPVC fittings, with their compact size and superior performance, are widely used in water treatment, water supply systems, and HVAC systems. As a leading pipe fitting manufacturer, Junrui has become a significant brand in the 3/4-inch CPVC fittings market thanks to its strong production capabilities and technological advantages. This article will explore in detail Junrui’s advantages, application scenarios, market demand, and success stories in 3/4-inch CPVC fittings, showcasing the enormous potential of this fitting specification.

Junrui Brand Advantages
Junrui, a professional enterprise specializing in the R&D, production, and sales of pipes and fittings, is committed to providing high-quality CPVC pipe products. Here are some of Junrui’s key advantages in the 3/4 CPVC fittings field:
1. Advanced Production Technology
Junrui employs internationally leading production technology and equipment, strictly controlling every step of the production process to ensure high product quality. Through precision mold manufacturing and automated production lines, Junrui can produce 3/4 CPVC fittings with accurate dimensions, high strength, and smooth surfaces. These fittings not only possess excellent corrosion resistance and high-temperature resistance but also ensure long-term stable operation in various harsh environments.
2. Strict Quality Control
Junrui strictly implements the ISO 9001 quality management system, ensuring that every step from raw material procurement to product delivery meets international standards. Each batch of 3/4 CPVC fittings undergoes rigorous quality testing, including pressure tests and corrosion resistance tests, ensuring the long-term stability and reliability of the fittings in practical applications.
3. Customized Services
Junrui provides personalized customization services based on customer needs. In addition to standard 3/4 CPVC pipe fittings, Junrui can also produce customized fittings according to customer’s specific requirements to meet the needs of different application scenarios. Whether it’s the connection method, size specifications, or other special functions, Junrui can provide professional solutions.
4. Wide Market Applications
Junrui’s products have been widely used in many industries both domestically and internationally, including chemical, construction, HVAC, power, and water supply and drainage. With its superior product quality and excellent after-sales service, Junrui has established a strong brand image in the global market.
Applications of 3/4 CPVC Pipe Fittings
3/4 CPVC pipe fittings are widely used in various fields due to their moderate size and excellent performance. Here are some typical application scenarios:
1. Water Treatment and Supply Systems
3/4 CPVC pipe fittings are widely used in drinking water, industrial water treatment, and water supply piping systems. Because CPVC has excellent corrosion resistance, it effectively resists chemicals, chlorides, and other corrosive substances in water, thus maintaining stable water flow and quality over long-term use. Whether in urban water supply networks or rural water conservancy construction, 3/4 CPVC pipe fittings are ideal connection accessories.
2. Heating, Ventilation, and Air Conditioning (HVAC) Systems
In HVAC systems, 3/4 CPVC pipe fittings are commonly used for refrigerant delivery pipelines, cooling water pipelines, and air conditioning system connections. CPVC material has good high-temperature resistance, remaining stable under high temperature and high pressure environments, and is not prone to deformation or leakage, ensuring the efficient operation of the air conditioning system.
3. Chemical Industry
In the chemical industry, 3/4 CPVC pipe fittings are widely used for transporting acidic and alkaline liquids and other chemical substances. Due to its excellent corrosion resistance, CPVC pipes can effectively resist the erosion of strong acids, strong alkalis, and other chemical media, ensuring the safe and stable operation of chemical equipment.
4. Power Industry
In the power industry, 3/4 of CPVC pipe fittings are used in cable protection duct systems for power facilities. CPVC pipe fittings have good wear resistance and anti-aging properties, effectively protecting cables from external environmental damage and improving the safety and stability of the power system.

Project Cases
Case 1: Replacement of Pipe Fittings in Urban Water Supply Network
In a city’s water supply network renovation project, the original metal pipe fittings frequently leaked and were damaged due to long-term exposure to the corrosive environment of water. To improve the stability and durability of the water supply system, the municipal government decided to replace them with Junrui’s 3/4 CPVC pipe fittings. After installation and use, the new CPVC pipe fittings not only effectively prevented corrosion but also improved the overall performance of the network and reduced maintenance frequency. The new water supply network system significantly reduced water waste and operating costs, becoming a model for urban infrastructure construction.
Case 2: Strong Acid Liquid Transportation System in a Chemical Plant
A chemical plant needed to transport strong acid liquid to its production line, but leaks frequently occurred due to the corrosiveness of traditional pipe fittings. The plant decided to use Junrui’s 3/4 CPVC pipe fittings to solve this problem. Because CPVC pipe fittings have excellent corrosion resistance and high-temperature resistance, they successfully replaced the metal pipe fittings, avoiding leaks and accidents caused by corrosion. After using Junrui’s CPVC pipe fittings, the factory not only improved production safety but also effectively reduced maintenance costs.
Case Study 3: HVAC System Retrofit During the HVAC system retrofit of a large office building, the original metal pipe fittings caused frequent system failures due to rust and aging. To solve this problem, the construction team selected Junrui’s 3/4 CPVC pipe fittings. The high-temperature resistance and corrosion resistance of CPVC pipe fittings ensured that the air conditioning system maintained good working condition even after long-term operation. Through this retrofit, the building’s energy efficiency was improved, and the maintenance frequency of the air conditioning system was significantly reduced.
Market Prospects and Development Trends
With increasing awareness of energy conservation and environmental protection, and the advancement of urbanization, the market demand for CPVC pipe fittings is constantly increasing. Especially in industries such as water supply, HVAC, and chemicals, 3/4 CPVC pipe fittings, due to their excellent performance and suitable specifications, have become the preferred material for many industrial and construction projects. Junrui, with its superior product quality, comprehensive market coverage, and excellent after-sales service, has already captured multiple domestic and international markets and will continue to grow stronger in future market competition.
3/4 CPVC pipe fittings, as a type of pipe fitting with high corrosion resistance and high temperature resistance, are widely used in water treatment, water supply systems, HVAC, chemical, and power industries. Junrui, with its advanced production technology, strict quality management system, and global service network, occupies an important position in the 3/4 CPVC pipe fittings market. In the future, with further industrial development and market demand growth, Junrui will continue to provide customers with high-quality products and solutions, helping more companies improve the safety, efficiency, and economy of their piping systems.


