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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 PVC-U Elbow 90° (F/F) Manufacturers and Custom PVC-U Elbow 90° (F/F) 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 Elbow 90° (F/F) Industry knowledge

How Does the PVC-U Elbow 90° (F/F) Ensure Efficient Flow Direction and Durability in Piping Systems?

The PVC-U Elbow 90° (F/F) by Zhongjia is a high-quality pipe fitting designed to change the flow direction of water or other fluids by 90 degrees within a piping system. Constructed from unplasticized polyvinyl chloride (PVC-U) and produced through precision injection molding, this elbow fitting combines mechanical strength, corrosion resistance, and ease of installation. It is widely used in water supply, irrigation, drainage, and industrial fluid systems, where a durable, leak-proof, and long-lasting connection is essential.

With sizes ranging from φ63mm to φ355mm, the Zhongjia PVC-U Elbow 90° (F/F) meets DIN standards, ensuring global compatibility and performance reliability under PN10 pressure rating (10 bar). Its female-to-female socket connection (F/F) design simplifies assembly while maintaining high sealing integrity.

Product Overview

The Zhongjia PVC-U Elbow 90° (F/F) serves a critical role in piping networks — redirecting flow efficiently while maintaining system pressure and flow velocity. The fitting’s 90-degree bend allows pipes to be installed at right angles, which is particularly useful in compact installations or where directional flow changes are required.

The product’s light gray color aligns with international plumbing color codes for water supply systems, and its smooth internal bore minimizes flow resistance. Produced using injection molding technology, each elbow ensures precise geometry, smooth inner walls, and consistent wall thickness — all of which are essential for maintaining high pressure and long-term durability.

Material Characteristics — Why Choose PVC-U?

PVC-U (Unplasticized Polyvinyl Chloride) is one of the most trusted materials in fluid transportation systems due to its balance of rigidity, toughness, and chemical stability. Unlike metals, PVC-U does not rust, corrode, or scale, and it resists the effects of aggressive water conditions or chemical exposure.

Key properties that make PVC-U ideal for this elbow fitting include:

  • Excellent Corrosion Resistance: Immune to rust and most acids, alkalis, and salts.
  • High Mechanical Strength: Withstands internal pressure up to PN10 (10 bar) without deformation.
  • Smooth Inner Surface: Reduces friction losses, promoting higher flow efficiency.
  • Non-toxic and Safe: Contains no heavy metal additives, suitable for potable water systems.
  • Lightweight and Easy to Install: Easier to handle than metal fittings, reducing installation labor.
  • Weather and UV Resistant: Suitable for both indoor and outdoor use.

The use of PVC-U ensures a long service life, often exceeding 50 years under normal conditions.

Function and Application

The PVC-U Elbow 90° (F/F) is used to change the direction of fluid flow by 90 degrees while maintaining consistent internal pressure and flow characteristics. Its dual female socket ends allow easy connection to PVC-U pipes via solvent cement joints, creating a seamless and leak-proof system.

This elbow is suitable for a broad range of applications, including:

  • Municipal Water Supply Systems: To direct the flow of potable water in distribution lines.
  • Irrigation and Agricultural Piping: For redirecting flow in field watering systems.
  • Industrial Process Lines: To transport chemicals or cooling water safely.
  • Wastewater and Drainage Systems: For routing effluent efficiently without corrosion risk.
  • Construction and Building Installations: In plumbing networks for commercial and residential buildings.

Its pressure-resistant design and chemical stability make it equally useful in both pressurized and non-pressurized applications.

Key Features and Advantages

a. Precision Injection Molding

The Zhongjia PVC-U Elbow 90° (F/F) is injection molded to ensure uniform wall thickness and smooth curvature. This precision manufacturing process guarantees tight tolerances, perfect roundness, and dimensional consistency, allowing a reliable connection with other PVC-U components.

b. High Strength and Impact Resistance

Despite being lightweight, PVC-U has excellent structural integrity. The fitting can resist both internal water pressure and external mechanical stress, maintaining performance even under demanding installation or environmental conditions.

c. Excellent Flow Efficiency

The smooth, polished inner surface of the elbow minimizes energy loss caused by friction and turbulence. This ensures a steady flow of water or fluid, making it more efficient than metal elbows that can corrode or roughen over time.

d. Corrosion and Chemical Resistance

Unlike steel or iron fittings, the PVC-U elbow is impervious to electrochemical reactions and immune to corrosion. It performs reliably in environments containing salts, acids, alkalis, or other chemicals that typically degrade metal components. This resistance ensures long-term durability and reduced maintenance costs.

e. Lightweight and Easy Installation

The lightweight nature of PVC-U makes handling and installation simple. The socket connection uses solvent cement, creating a strong, permanent bond that is both watertight and pressure-resistant. The ease of joining and lack of need for heavy tools lower overall installation costs.

f. Environmentally Friendly and Cost-Effective

PVC-U is a recyclable and energy-efficient material, requiring less energy to produce than metals. Its long lifespan, combined with low maintenance requirements, results in a cost-effective and sustainable solution for modern piping systems.

g. Hygienic and Safe for Drinking Water

The PVC-U Elbow 90° (F/F) is lead-free and non-toxic, ensuring no leaching of harmful substances into the water. It complies with global safety standards for potable water transportation, making it ideal for domestic and municipal supply systems.

Installation Guidelines

Installing a PVC-U Elbow 90° (F/F) is straightforward and efficient.

  1. Clean the pipe ends and the socket area of the elbow to remove dirt and grease.
  2. Apply PVC-U solvent cement evenly to both the pipe and socket surfaces.
  3. Insert the pipe into the socket and twist slightly to evenly distribute the adhesive.
  4. Hold in position for several seconds until the joint sets.
  5. Allow adequate curing time before applying water pressure to the system.

This solvent-welding process creates a chemical fusion between the PVC-U components, forming a joint that is as strong as the pipe itself.

Performance and Longevity

The Zhongjia PVC-U Elbow 90° (F/F) is engineered for long-term use in pressurized systems. Its resistance to corrosion, chemical attack, and physical wear ensures consistent performance throughout its lifespan. Even after years of exposure to water, sunlight, or harsh industrial environments, it maintains its structural integrity and appearance.

Its PN10 pressure rating (10 bar) guarantees suitability for most standard water supply and distribution applications. With minimal maintenance requirements, the fitting offers exceptional operational reliability and cost efficiency.

Advantages in System Design

Using PVC-U elbows allows for flexibility in pipeline layout, enabling designers to adapt systems to site constraints without sacrificing efficiency. The 90° elbow minimizes space requirements while maintaining hydraulic efficiency, ensuring that fluid redirection does not cause significant energy loss.

In comparison to metal elbows, PVC-U fittings provide:

  • No risk of scaling or rust, maintaining smooth flow over time.
  • Lower weight, reducing structural support requirements.
  • Simplified maintenance, with no corrosion or joint degradation.
  • Lower lifecycle costs, owing to their long service life and reliability.

Environmental and Economic Impact

PVC-U is one of the most sustainable materials used in modern infrastructure. Its recyclability, low production energy, and long lifespan contribute to reduced carbon footprints. The Zhongjia PVC-U Elbow 90° (F/F) is an excellent example of how modern engineering materials can combine durability, cost-efficiency, and environmental responsibility in one product.

By replacing traditional metal elbows, users benefit from lower installation costs, reduced maintenance, and minimal replacement needs — leading to substantial long-term savings.

Conclusion

The Zhongjia PVC-U Elbow 90° (F/F) is a reliable, high-performance fitting designed to deliver efficient fluid redirection and long-lasting durability in any piping system. With its corrosion resistance, precision molding, and lightweight design, it offers superior functionality for water supply, industrial, and irrigation systems alike.

Complying with DIN standards and rated at PN10 pressure, it ensures both structural safety and hydraulic efficiency. Whether used in municipal infrastructure or building plumbing, this elbow fitting represents a cost-effective, sustainable, and maintenance-free solution for modern water management and fluid transport systems.