Hebei Ruijie Pipe Industry Co., Ltd. is one of the most reliable manufacturers and suppliers of ppr fittings reduce socket in China. With abundant experience, we warmly welcome you to buy high quality ppr fittings reduce socket for sale here from our factory. Also, pricelist and free sample are available.
The PPR Fittings Reduce Socket is an all-plastic hot melt fitting with a widened step structure and no metal inserts. It is primarily used in PPR water supply piping systems for straight-through diameter conversion between two pipes of different outer diameters. The widened step transition design effectively enhances structural strength, making it suitable for both residential water supply and large-scale drainage projects.
Product Advantages
1. Integrated injection molding with widened transition steps reduces stress concentration at the reducing section, providing better pressure-bearing performance.
2. Made of pure PPR material, corrosion-resistant and scale-free, meeting drinking water transportation standards.
3. Hot melt socket fusion creates an integrated joint with strong sealing performance to prevent leakage.
4. Smooth inner wall minimizes water flow resistance, reducing transmission loss.
5. Wide specification range covers from small household applications to large-diameter engineering pipelines.
Key Structural Features
• Widened flanged transition steps improve overall rigidity of the fitting, preventing deformation in large sizes.
• Anti-slip ribs on the outer wall facilitate easy clamping and handling during hot melt operation.
• Specification and pressure rating markings are molded on the outer wall for quick identification on site.
• Socket depth strictly complies with national standards to ensure sufficient fusion area and reduce the risk of false welding or leakage.
• Uniform wall thickness with no defects such as air bubbles or depressions.
Storage Guidelines
• Store in a cool, ventilated warehouse away from direct sunlight to prevent UV aging.
• Do not stack too high to avoid deformation under pressure.
• Keep away from heat sources and high-temperature equipment.
• Protect from dust to prevent sand or dirt from entering the socket interior.
Installation Instructions
1. Cut the pipe to length, ensuring the cut end is flat and free of burrs.
2. Clean dust, oil, and moisture from the pipe end and the fitting socket.
3. Set the hot melt machine to approximately 260°C. Heat both the pipe and fitting simultaneously until the proper melt depth is reached, then remove and insert the pipe straight into the socket. Do not rotate.
4. Allow to cool naturally without twisting or applying force to the fitting during cooling.
5. After installation, perform a pressure test to verify system sealing.
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Specification |
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| 25×20mm | 50×20mm | 63×32mm | 75×63mm | 110×50mm |
| 32×20mm | 50×25mm | 63×40mm | 90×32mm | 110×63mm |
| 32×25mm | 50×32mm | 63×50mm | 90×40mm | 110×75mm |
| 40×20mm | 50×40mm | 75×32mm | 90×50mm | 110×90mm |
| 40×25mm | 63×20mm | 75×40mm | 90×63mm | - |
| 40×32mm | 63×25mm | 75×50mm | 90×75mm | - |
Professional Tips
• Widened Step vs. Standard Type: The widened step disperses stress at the reducing section. For large diameters (75–110mm), its anti-deformation capability is superior to standard narrow-step fittings; for small diameters, both types are acceptable.
• Suitability for Heating/Hot Water: Use PN20 rated fittings for hot water heating systems. Do not exceed rated temperature and pressure.
• Key Points for Hot Melt: Clean the surfaces, heat at 260°C, insert straight without rotation, and allow natural cooling without stress.
Factory Advantages
1. Full set of molds in stock, enabling direct mass production of all listed specifications.
2. All products use virgin PPR material, no recycled material added, with batch samples retained for quality control.
3. Support neutral packaging and OEM customization.
4. Accept foreign trade bulk orders; minimum order quantity negotiable.
5. Each shipment undergoes appearance and dimensional inspection before delivery to ensure finished product quality.
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