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

PVC-U Union

Brand: 
Zhongjia

Material: 
PVC-U

Size: 
DN15 to DN100

Technique: 
Injection

Connector type: 
Socket

Color: 
Dark gray

Standard: 
DIN standard

Nominal Pressure: 
PN16

Origin: 
China

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  • Description

  • Additional info.

  • Size Guide


  • Product Description:
    ● Shape: Straight; Inner Diameter: 20mm to 110mm.
    ● Advantage: UPVC rotatable connectors with EPDM sealing o-rings feature smooth surface, odorless, neutral, lightweight, and watertight, do not corrode or crack easily and last for a long time even with zero maintenance.
    ● Instruction: The socket openings are bonded by UPVC special glue. Apply glue on the inside and outside of the pipe, then insert within 1 minute, set in 15 minutes, and use after 24 hours for better effect.
    ● Application: Union pipe fittings are great for connecting two unthreaded plumbing pipes in different outside diameters requiring high tensile and impact strength. Widely used in building construction, bathrooms, kitchens, sinks, laboratories, etc.
    ● Notice: Please confirm the correct size before ordering.

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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 UPVC Socket Union Manufacturers and Custom UPVC Socket Union 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 Fittings for Industry Industry knowledge

How Do EPDM Sealing O-Rings Enhance UPVC Socket Union Performance?
UPVC Socket Unions are renowned for their durability, corrosion resistance, and versatility in various applications. A critical component that significantly enhances their performance is the EPDM sealing o-ring. Made from ethylene propylene diene monomer, these o-rings provide exceptional sealing properties, ensuring a watertight connection even under pressure variations or minor misalignments. EPDM's excellent resistance to water, steam, and a wide range of chemicals makes it an ideal material for plumbing systems, laboratories, and industrial setups. Its flexibility allows it to adapt to slight deformations, maintaining a tight seal and reducing the risk of leaks.
The integration of EPDM sealing o-rings into our UPVC Socket Unions aligns with our commitment to delivering high-quality, reliable products. By incorporating these advanced seals, our unions offer enhanced performance in critical applications, ensuring long-lasting, maintenance-free connections. Furthermore, EPDM's resistance to extreme temperatures and UV exposure makes these unions particularly suitable for outdoor use, adding another layer of versatility to our product range. This innovation reflects our focus on customer satisfaction and our dedication to meeting the demands of modern construction and plumbing systems.
At our state-of-the-art facility in Changzhou City, we leverage advanced production equipment, including 60 plastic injection molding machines and over 3,000 molds, to ensure the precision and consistency of every UPVC Socket Union. Our ISO9001, ISO14001, and OHSAS18001 certifications underscore our commitment to quality, environmental responsibility, and workplace safety. These resources, coupled with a team of skilled technicians, allow us to maintain a competitive edge while continually innovating to improve product performance.
What to Do If a UPVC Socket Union Leaks After Installation?

If a UPVC Socket Union leaks after installation, addressing the issue promptly and effectively is essential to ensure the integrity of your plumbing system. The first step is to identify the source of the leak. Most commonly, leaks occur due to improper application of glue, inadequate curing time, or damage to the sealing components, such as the EPDM o-ring. Begin by inspecting the connection for visible gaps or signs of misalignment. If the leak originates from the glued joints, the fitting may need to be disassembled, cleaned thoroughly, and re-glued using a UPVC-special adhesive. Ensure that the glue is applied evenly on both the inside of the socket and the outside of the pipe for a strong, watertight bond.

Another common cause of leaks is a compromised EPDM sealing o-ring. This component is critical for ensuring a watertight seal and compensating for slight variations in alignment. If the o-ring is damaged or improperly seated, it can lead to leakage even in otherwise well-installed unions. In such cases, replacing the o-ring with a high-quality EPDM seal can resolve the issue. Our UPVC Socket Unions are equipped with durable EPDM o-rings specifically designed to provide long-lasting, reliable performance. Their flexibility and resistance to water, chemicals, and temperature variations make them a dependable choice for various applications.

Our manufacturing expertise ensures that each UPVC Socket Union is designed for precision and durability. Produced in our advanced facility using state-of-the-art equipment, these unions meet stringent quality standards, as evidenced by our ISO9001, ISO14001, and OHSAS18001 certifications. Additionally, the lightweight yet robust design of our products simplifies installation while maintaining excellent resistance to corrosion and wear, minimizing the likelihood of issues such as leaks.