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Changzhou Zhongjia Plastic Industry Co., Ltd.
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  • PVC-U Union
  • PVC-U Union
  • PVC-U Union
  • PVC-U Union

PVC-U Union

Brand: 
Zhongjia

Material: 
PVC-U

Size: 
φ20mm-φ110mm

Technique: 
Injection moulded

Connection:
Socket

Color: 
Light gray, Dark gray, White

Standard: 
DIN standard

Nominal Pressure: 
PN10

Origin: 
China

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  • Description

  • Additional info.

  • Size Guide

  • PVC-U Union Fittings, like couplings, used in connect things, but they are a not-as-permanent solution that can be easily taken apart. PVC-U unions are often used in building temporary structures, and can be taken apart when the structure is no longer needed. They feature a ring in the center that separates the two ends from each other, allowing for easy deconstruction and maintenance. We offer such union fittings at a diameter of 20mm to 110mm.


    Product Features and Advantages:
    ● Non-conductive: Good insulation, assuring a safe system.
    ● Appearance: Smooth surface with small friction coefficient.
    ● Fire resistance: Self-extinguishing, do not support combustion.
    ● Corrosion Resistance: Resistant to acids, bases and salts.
    ● Impact strength: Resistant to compression and impact.

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About Us
Changzhou Zhongjia Plastic Industry Co., Ltd.
Changzhou Zhongjia Plastic Industry Co., Ltd. was established in 2006. It is an enterprise specializing in the research, development, production and sales of UPVC, CPVC plastic pipe fittings and valve products. As China PVC-U Union Fittings Manufacturers and Custom PVC-U Union Fittings Suppliers. Our featured products are plastic products such as UPVC/CPVC pipes, pipe fittings and valves. At present, we mainly supply industrial and water supply series pipes, pipe fittings and valves that meet national standards, American standards. Our products are sold to Southeast Asia, the Middle East, Africa, North America, South America, and are widely used in industry, agriculture, construction and other fields.
Our company is located in the Xueshuxiang Industrial Concentration Zone, Yaoguan Town, Wujin District, Changzhou City, Jiangsu Province. The area is close to the Shanghai-Chengdu Expressway for 10 kilometers, the Yangtze River Expressway for 15 kilometers, the Changzhou High-speed Railway Station for 15 kilometers, and Shanghai for 160 kilometers. It has convenient transportation and environment.
The company covers an area of 50,000 square meters and has an annual production capacity of more than 30,000 tons. The company has passed ISO9001, ISO14001, and OHSAS18001 system certification. It has 4 raw material mixers, 60 plastic injection molding machines, 8 pipe extrusion production lines, 10 mechanical processing equipment, and more than 3,000 sets of molds. At present, we have 150 employees, including 10 technicians. With the continuous development and increasing internationalization of the company, we are committed to attracting talents and preparing for vigorous development.
The company adheres to the market-oriented, quality-oriented, service-oriented, introduces advanced production equipment and technology, makes products, creates brands, and has won the trust and recognition of customers. It has now become one of the green and vital pipeline production enterprises at home and abroad. We will always focus on customer satisfaction, follow the business principles of "modernization, youth, and knowledge", strive to catch up with the advanced level of the same industry at home and abroad, and strive to create a Chinese brand.
We sincerely welcome domestic and foreign customers to our company to discuss cooperation!
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PVC-U Union Industry knowledge

In modern piping systems, union fittings play a crucial role in enabling easy assembly, disassembly, and maintenance of pipelines without requiring cutting or extensive labor. Among the different types of piping components, UPVC (Unplasticized Polyvinyl Chloride) union fittings stand out for their versatility, durability, and ease of use. Zhongjia UPVC Union Fittings are designed to provide reliable connections for water, wastewater, chemical, and irrigation systems, offering a practical solution for both residential and industrial piping applications.

1. Material Advantages of UPVC
UPVC is a rigid, high-performance plastic that is widely used in piping systems due to its excellent mechanical, chemical, and environmental properties. The advantages of UPVC in union fittings include:

Chemical Resistance
UPVC exhibits strong resistance to acids, alkalis, salts, and a variety of chemical solutions. This property allows union fittings to be used safely in water supply, wastewater treatment, chemical industries, and agricultural irrigation, where metals or other materials might corrode or degrade.

Lightweight Construction
Compared to metal fittings, UPVC union fittings are significantly lighter. This reduces shipping, handling, and installation costs, making it easier for engineers and technicians to work on pipelines of different sizes.

Durable and Long-Lasting
UPVC is resistant to corrosion, UV degradation, scaling, and microbial growth. These characteristics ensure a long service life with minimal maintenance, even in harsh or outdoor environments.

Environmentally Friendly and Safe
UPVC is recyclable and non-toxic, supporting sustainable infrastructure development. Its non-conductive nature adds a safety advantage, particularly in applications near electrical equipment.

2. Product Specifications and Manufacturing Features
Zhongjia UPVC Union Fittings are produced using injection molding technology, which guarantees high dimensional accuracy, smooth surface finish, and consistent wall thickness. Key specifications and features include:

Connection Type: Socket connection for solvent welding with UPVC pipes.
Size Range: φ20mm to φ110mm, suitable for small to medium-sized piping systems.
Color Options: Light gray, dark gray, and white, allowing for easy identification and aesthetic consistency in piping layouts.
Standard Compliance: DIN standard, ensuring compatibility with international piping systems and standardized performance.
Nominal Pressure: PN10, suitable for water supply, drainage, and light chemical applications.
The union design allows pipes to be connected and disconnected easily without damaging the pipeline, making maintenance and replacement of system components efficient and cost-effective.

3. Functional Advantages
Zhongjia UPVC Union Fittings provide several practical benefits within piping systems:

Easy Assembly and Disassembly
Union fittings allow sections of the pipeline to be connected or disconnected without cutting the pipe. This is particularly useful in areas where maintenance or cleaning is required frequently.

Leak-Proof Connections
With proper installation using solvent cement or compatible sealing gaskets, union fittings create tight, reliable seals, preventing leaks and ensuring system efficiency.

Versatile Applications
Zhongjia UPVC Union Fittings can be used in multiple sectors, including:

Residential water supply systems – indoor plumbing, garden taps, and household pipelines.
Wastewater and sewage systems – handling moderately aggressive wastewater safely.
Chemical industries – conveying non-aggressive to mildly corrosive chemical solutions.
Agricultural irrigation systems – for connecting sprinklers, pumps, and storage tanks.
Swimming pools and aquaculture systems – resistant to chlorine and other disinfectants.
Facilitates System Modifications
Union fittings make it easier to modify or expand piping systems without major reconstruction, providing flexibility for future upgrades or changes.

4. Installation Advantages
Zhongjia UPVC Union Fittings are designed for user-friendly installation:

Solvent Cement Socket Connection
The socket connection allows the use of UPVC solvent cement to create a strong, permanent bond between the pipe and the fitting. This ensures leak-free operation and system integrity.

Time and Labor Efficiency
Union fittings reduce installation time and labor costs due to their simple assembly process and lightweight design.

Minimal Maintenance
UPVC fittings do not corrode, scale, or accumulate biofilm, minimizing the need for regular maintenance or replacement.

Noise and Vibration Reduction
The material properties of UPVC absorb vibrations and dampen operational noise, contributing to quieter water or chemical transport systems.

5. Comparison with Other Materials
Union fittings are also manufactured from metals such as brass, stainless steel, or cast iron. Compared to these materials, UPVC offers several advantages:

Versus Brass: Lower cost, chemical resistance, and lightweight design make UPVC a more economical choice.
Versus Stainless Steel: While stainless steel can handle higher pressures and temperatures, UPVC provides sufficient performance for most residential, commercial, and light industrial applications.
Versus Cast Iron: UPVC is much lighter, easier to handle, and resistant to corrosion, reducing installation complexity and maintenance requirements.
Although metals are preferred for high-pressure or high-temperature systems, UPVC union fittings provide a reliable and cost-effective solution for standard water, wastewater, and chemical pipelines.

6. Zhongjia Brand Strength
Zhongjia has established a reputation as a reliable manufacturer of high-quality UPVC piping solutions. Key strengths of the brand include:

Stringent Quality Control: Ensuring dimensional precision, pressure rating compliance, and consistent material quality.
Comprehensive Product Range: Offers complementary fittings such as tees, elbows, reducers, flanges, end caps, and adapters for complete piping solutions.
International Standard Compliance: DIN certification ensures compatibility with global piping systems.
Customer-Focused Support: Technical guidance, installation instructions, and after-sales service provide assurance for project managers and engineers.
Zhongjia’s commitment to quality, innovation, and customer satisfaction ensures their UPVC union fittings are trusted by professionals worldwide.

Conclusion
The Zhongjia UPVC Union Fitting is a high-performance piping component designed for easy assembly, reliable sealing, and long-term durability. Its lightweight, corrosion-resistant, and cost-effective properties make it ideal for water supply, wastewater management, chemical processing, irrigation, and aquaculture systems.

With a size range of φ20mm to φ110mm, multiple color options, DIN standard compliance, and socket connections for solvent welding, Zhongjia UPVC Union Fittings provide a practical, efficient, and dependable solution for modern piping networks.

As global demand for durable, low-maintenance, and cost-effective piping solutions continues to grow, Zhongjia remains a leading brand for precision-manufactured UPVC fittings, ensuring safe, efficient, and long-lasting performance across residential, commercial, and industrial applications.