Youtube Facebook
408590707@qq.com
Whatsapp Wechat
+86-0519-88712081
Changzhou Zhongjia Plastic Industry Co., Ltd.
Home > Products > PVC-U > PVC-U Fittings for Industry > PVC-U Blind Flange

Product Category

How can we help you?
If you need help, please feel free to contact us.
  • PVC-U Blind Flange
  • PVC-U Blind Flange

PVC-U Blind Flange

Brand: 
Zhongjia

Material: 
PVC-U

Size: 
DN50 to DN400

Technique: 
Injection

Connector type: 
Socket

Color: 
Dark gray

Standard: 
DIN standard

Nominal Pressure: 
PN16

Origin: 
China

PREV：PVC-U Clip NEXT：PVC-U Union

  • Description

  • Additional info.

  • Size Guide


  • Product Description:
    ● Light weight, convenient handling and corrosion-resistant;
    ● Chemical stability, fluid resistance;
    ● Anti-aging, long life;
    ● Healthy and non-toxic, free of stain and scale;
    ● Smooth inner wall, reducing pressure loss and increasing flow speed;
    ● Low noise, reduced by 40% compared to galvanized steel pipes;
    ● Soft colors and design, suitable for installation either exposed or hidden;
    ● Easy and fast installation, making cost minimized.

Leave Us A Message

Related Product
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 Blind Flange Manufacturers and Custom PVC-U Blind Flange 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!
Certificate Of Honor
News
PVC-U Blind Flange Industry knowledge

In modern pipeline engineering, ensuring complete sealing and reliable system closure is as important as the flow of liquids or gases themselves. A blind flange serves as an indispensable component in situations where the end of a pipe needs to be sealed securely while still allowing the option of future extension, inspection, or maintenance. Zhongjia, a trusted manufacturer in the pipeline fittings industry, introduces its UPVC Blind Flange—a product that combines excellent performance, long-term durability, and ease of installation, making it suitable for a wide range of applications.

Product Overview

The Zhongjia UPVC Blind Flange is manufactured from high-quality PVC-U (Unplasticized Polyvinyl Chloride) material, using advanced injection molding techniques to achieve precise dimensions and superior strength. Designed in accordance with the DIN standard, the product meets global requirements for pipeline accessories. Available in sizes ranging from DN50 to DN400, it can accommodate small to large-scale piping systems with a nominal pressure rating of PN16, ensuring secure closure under challenging operational conditions.

Its socket-type connector allows seamless bonding with compatible pipes, while its dark gray industrial-grade finish provides both visual uniformity and easy integration into existing piping networks. Produced in China under strict quality control by Zhongjia, the UPVC Blind Flange is a cost-effective yet high-performance choice for both industrial and civil engineering projects.

Key Features and Advantages

Lightweight and Easy Handling
Compared to traditional metal blind flanges, the UPVC Blind Flange is significantly lighter. This not only simplifies transportation and installation but also reduces labor costs. Contractors and maintenance teams can achieve quick assembly and disassembly without requiring heavy lifting equipment.

Superior Corrosion Resistance
One of the biggest challenges in pipeline systems is corrosion caused by aggressive chemicals, moisture, or environmental exposure. The PVC-U material is inherently resistant to acids, alkalis, salts, and a wide range of chemical solvents, ensuring that the blind flange does not rust, corrode, or degrade even under prolonged use.

Chemical Stability and Fluid Resistance
The Zhongjia UPVC Blind Flange is designed for stable performance when exposed to a variety of industrial fluids. Whether used in chemical plants, water treatment systems, or laboratory environments, it maintains structural integrity and resists fluid-induced wear.

Durability and Long Service Life
Thanks to its anti-aging properties, the flange maintains strength and performance for many years. Even in demanding operational environments, it does not crack or weaken easily, delivering consistent sealing reliability with minimal maintenance.

Safe, Non-Toxic, and Hygienic
Manufactured from healthy, non-toxic PVC-U, the blind flange is free of harmful substances, odors, and contaminants. It does not produce stains or scaling on the pipe’s inner surface, making it especially suitable for potable water systems and other applications where hygiene is critical.

Smooth Inner Wall for Better Flow
With a smooth, polished inner surface, the blind flange minimizes pressure loss and reduces fluid friction. This design ensures higher flow speeds and greater efficiency across the system.

Noise Reduction Capability
Independent tests have shown that UPVC pipes and fittings reduce operational noise levels by up to 40% compared to galvanized steel pipes. The Zhongjia Blind Flange contributes to quieter system performance, enhancing comfort in residential and commercial environments.

Aesthetic and Practical Design
The product features a neutral dark gray color with a clean, professional finish. It blends well with both exposed and concealed installation settings, ensuring that the system is both functional and visually unobtrusive.

Easy and Cost-Effective Installation
The socket connection system, combined with UPVC solvent cement, enables fast, secure, and reliable bonding. This reduces installation time, minimizes labor, and lowers overall costs, making the blind flange an economical choice for projects of all sizes.

Applications

The Zhongjia UPVC Blind Flange is a versatile product widely adopted in different industries and environments. Its ability to completely seal off sections of pipelines makes it ideal for:

Water Supply Systems: Safe for potable water distribution and municipal waterworks.
Sewage and Drainage Systems: Corrosion-resistant, ensuring long-term reliability in wastewater treatment facilities.
Chemical Industry: Highly suitable for transporting and sealing off aggressive chemicals and industrial fluids.
Laboratories and Research Facilities: Provides a hygienic, non-reactive solution for experimental piping systems.
Construction and Civil Engineering: Used in building infrastructure for reliable sealing of pipeline ends.
Irrigation Systems: Protects agricultural pipelines while offering flexibility for future expansion.
Why Choose Zhongjia UPVC Blind Flange?
Quality Assurance: Every blind flange undergoes strict quality inspections to ensure compliance with DIN standards and performance requirements.
International Compatibility: Designed to integrate seamlessly with standardized piping systems worldwide.
Economic Efficiency: Lower weight, faster installation, and minimal maintenance translate into reduced total project costs.
Environmental Responsibility: Made with environmentally friendly materials, it contributes to sustainable construction and fluid transport systems.
Trusted Brand: With years of expertise in pipeline manufacturing, Zhongjia delivers products that balance performance, safety, and affordability.
Installation Instructions

Installing the Zhongjia UPVC Blind Flange is straightforward. Simply apply PVC-U solvent cement evenly to both the pipe socket and flange connection, insert the pipe within one minute, and hold it in place. Initial bonding occurs within 15 minutes, while full curing and optimum sealing performance are achieved after 24 hours. This simple method guarantees a leak-free, secure joint with minimal downtime.

Conclusion

The Zhongjia UPVC Blind Flange represents a perfect balance of strength, safety, and efficiency. Engineered from premium PVC-U and designed for long-lasting reliability, it provides an ideal sealing solution for both industrial and civil piping systems. Its lightweight, corrosion-resistant, and cost-effective design ensures convenience for installers and peace of mind for end users. Whether used in water treatment, chemical processing, construction, or irrigation, Zhongjia’s UPVC Blind Flange delivers dependable performance that stands the test of time.

By choosing Zhongjia, you are investing in a product that reflects precision engineering, global standards compliance, and a commitment to quality—a true partner for all your pipeline sealing needs.