



This product is a high-performance PPR brass union connector elbow, specifically engineered for hot and cold water piping systems across residential, commercial, and industrial applications. It combines top-grade polypropylene random copolymer (PPR) with high-strength brass to deliver outstanding pressure resistance, thermal stability, and corrosion resistance, ensuring long-term reliability in demanding environments.
Designed with a 90-degree angle, the elbow allows for directional changes in confined installation spaces. The union structure enables flexible disassembly and reassembly, allowing for easy maintenance or expansion without dismantling the entire piping line. This greatly enhances operational efficiency and reduces maintenance downtime and cost.
The brass insert is precisely machined with high thread accuracy, ensuring strong sealing and impact resistance when connecting to metal pipes or fittings. The brass used complies with potable water standards, ensuring no harmful substances leach into the water, thereby safeguarding water quality.
Every unit undergoes rigorous testing, including air tightness, hydraulic pressure, and dimensional inspection, to ensure compliance with international standards such as ISO and DIN. The product features a smooth surface finish, free from burrs or cracks, providing a seamless installation experience and reflecting our dedication to quality craftsmanship and customer satisfaction.




The PPR Brass Union Connector (front end) is a high-performance fitting engineered for hot and cold water pipeline systems. It is manufactured using premium PPR material combined with precision-machined brass inserts, ensuring both high-pressure resistance and corrosion protection. Its front-end union design allows for easy installation and disassembly, making it especially suitable for joints requiring regular maintenance or inspection.
This product features an embedded brass component with finely processed threads to ensure tight sealing and stable connection, preventing leakage risks during long-term use. The union configuration offers flexibility in assembly, which is crucial for installations in tight or complex piping layouts, significantly enhancing on-site efficiency.
Material selection is essential to product reliability. The PPR component uses food-grade raw materials, ensuring heat resistance, non-toxicity, and compliance with drinking water safety standards. The brass part is made from CW617N or equivalent high-performance brass, offering mechanical strength and dezincification resistance, suitable for a variety of chemical and water conditions, thus extending the product’s service life.
Each unit undergoes rigorous pressure and sealing tests and meets ISO 15874 and relevant national standards. It is compatible with all standard PPR piping systems and requires no special tools for assembly, making it a dependable solution for residential, commercial, and industrial plumbing installations.




PPR Direct Union Brass Connector is a high-performance fitting engineered for modern water supply and drainage systems. Combining the environmental benefits of PPR with the durability and strength of brass, it ensures long service life and sealing performance. This product is widely used in hot and cold water systems, industrial fluid transport, and HVAC piping, capable of withstanding pressure and temperature fluctuations to maintain system stability and safety.
Crafted from premium-grade PPR materials, the connector offers outstanding resistance to corrosion and aging, free from harmful substances and compliant with international potable water standards. The integrated brass insert is precisely cast, featuring smooth surfaces and clearly defined threads that provide tensile strength and torsional resistance. This ensures long-term structural integrity and effectively prevents leaks.
The union-style structure greatly enhances installation and maintenance efficiency. It allows for easy disassembly and replacement without the need to dismantle the entire pipeline, minimizing downtime and maintenance costs. This makes it especially suitable for installations in complex or confined spaces.
We uphold strict quality control throughout every stage of production, from dimensional accuracy to rigorous sealing tests, to ensure every product meets high performance standards before leaving the factory. The PPR Direct Union Brass Connector is more than just a fitting—it represents our commitment to safety, efficiency, and premium quality, delivering reliable and durable piping solutions for our clients.




The PPR Direct Union Brass Connector (front end) is manufactured from high-quality brass material, ensuring corrosion resistance and mechanical strength of the connection component. Precision casting and machining processes are employed to achieve high dimensional accuracy and surface finish, guaranteeing a tight fit with PPR pipes and effectively preventing leakage and loosening.
The product features a well-designed, compact structure that facilitates easy installation and maintenance. The union design allows for flexible adjustment of the connection within the piping system, accommodating various installation environments and angle requirements, thus enhancing overall system adaptability and reliability. A sealing ring at the joint further improves sealing performance, minimizing the risk of failures during pipeline operation.
This direct union connector is widely used in hot and cold water piping systems and is suitable for residential, commercial, and industrial water supply and drainage projects. Its ability to withstand high temperatures and pressures ensures stable performance under various working conditions and a long service life. It complies with relevant national and industry standards, ensuring user safety and project quality.
Throughout the manufacturing process, stringent quality controls are applied to ensure that each direct union connector undergoes multiple inspections, including dimensional checks, pressure tests, and sealing performance tests. With standardized production and quality management systems, we deliver reliable and durable piping connection solutions to meet diverse customer requirements.




The PPR Female Threaded Unions are manufactured from high-quality polypropylene material, providing corrosion resistance and long-term stability. The product design adheres to international standards, with precise internal threading that ensures a tight connection with various piping systems, maintaining sealing integrity and reliability at the joint.
This union is particularly suitable for hot and cold water systems, heating systems, and industrial pipeline transportation, capable of withstanding high working pressures and temperature variations. The internal threaded interface facilitates easy installation and maintenance, requiring no additional sealing materials, which saves construction time and reduces maintenance costs.
Strict dimensional tolerances are maintained during manufacturing to ensure compatibility and interchangeability with piping fittings. Additionally, the material undergoes multiple testing certifications to meet environmental and safety standards, guaranteeing safe performance during use. The product demonstrates mechanical strength and pressure resistance in practical applications, thereby extending the service life of the piping system.




All Plastic Unions are connectors manufactured from high-performance engineering plastics, specifically designed for various piping systems to ensure sealing integrity and connection stability. The materials used offer corrosion resistance and chemical durability, suitable for harsh environments including acidic, alkaline media and industrial wastewater treatment applications.
The product features a precisely engineered structure, with threaded or clamp-type connection parts that allow easy and reliable installation. This facilitates rapid on-site assembly and disassembly for maintenance. The all-plastic construction results in a lightweight product, reducing transportation and installation labor intensity while lowering maintenance costs caused by metal corrosion.
Regarding sealing performance, the union incorporates specialized rubber seals internally to effectively prevent fluid leakage, ensuring safe operation of the system. The product complies with multiple international standards and is applicable across water treatment, chemical processing, agricultural irrigation, and HVAC systems, offering broad versatility and long-term durability.




Copper Plastic Unions are specialized fittings designed to connect copper pipes with plastic pipes. The product is made from high-quality copper combined with durable plastic materials to ensure the sealing and longevity of the connection joint, making it suitable for both hot and cold water piping systems. The copper components undergo strict anti-corrosion treatment to enhance the product’s lifespan in humid environments.
Structurally, the Copper Plastic Union features mechanical strength and pressure resistance, capable of withstanding normal operating pressures within piping systems, thereby ensuring safe and stable system operation. Its compact connection design allows for easy installation, reducing construction time and maintenance costs. The plastic part is made from high polymer materials with temperature resistance and chemical corrosion resistance, suitable for various medium transportation requirements.
During manufacturing, Copper Plastic Unions adhere to international piping fitting standards, ensuring precise dimensions and stable sealing performance in every unit. The products undergo rigorous quality checks, including pressure and corrosion resistance tests, guaranteeing outstanding performance in practical applications. Whether for residential water supply or industrial piping projects, this product reliably meets demanding connection requirements.
The Hot Melt PPR Unions series is designed for easy connection and disassembly in piping systems. It is widely used in hot and cold water systems, heating systems, and various plumbing installations—especially where maintenance or frequent component replacement is needed.
This series includes brass union elbows, straight brass unions, and front-end variants, offering flexible solutions for different spatial and directional installation requirements. These fittings ensure reliable connections even in complex construction conditions.
The female threaded unions are ideal for quick and secure attachment to valves or other fittings, enhancing sealing performance and system pressure resistance. All-plastic unions offer chemical resistance, are lightweight, and provide electrical insulation—suitable for specialized media environments.
Copper-plastic composite unions combine the strength of metal with the corrosion resistance of plastic, making them a balanced solution in terms of performance and cost—perfect for long-term, stability-focused projects.
All components are made from high-quality PPR and brass, offering heat resistance, durability, and aging resistance. The entire line supports sustainable construction practices and is an ideal choice for modern green building water systems.
Shanghai Pirsa Pipe Industry Co., Ltd. was established in 2003. We have two production bases located in Shanghai, China and Zhoukou, Henan Province, with cooperative bases covering Fujian, Anhui, Yunnan, Chongqing, and Shenyang in China. The factory covers an area of 100000 square meters; Over 100 production lines with an annual production capacity of 100000 tons and an annual sales revenue of 600 million RMB.
The products include PP-R, PE-RT, PE water supply pipes PB、 Nearly a hundred series of products including stainless steel drinking water pipes, HDPE drainage pipes and double wall corrugated pipes, PVC-U drainage pipes and electrical conduit, PVC-C high and low voltage power pipes, switch sockets, bathroom plumbing, and pre purified water.
The company was established in 2003
Factory area of 100000 square meters
Over 100 production lines

