1. Product Introduction
The PPR male thread union is a detachable connection fitting specially designed for PPR pipeline systems. It connects with metal pipe fittings through an external thread at one end and enables quick disassembly and assembly of pipelines through a union structure at the other end. Its core function is to provide flexible maintenance and replacement capabilities while ensuring tightness. It is widely used in household hot and cold water pipelines, commercial equipment connections, and industrial water supply and drainage systems. The product design complies with national standards such as GB/T 18742, and some high-end products have passed the EU CE certification to ensure hygiene, safety, and durability.
2. Product Structure
Basic Components
External Thread Main Body: One end is an male thread (made of copper), used to connect metal valves, faucets, etc.; the other end is a PPR socket, which is fused with the pipeline into one piece through hot melting.
Union Components: Including nuts and sealing rings, which realize the fastening and sealing of the pipeline through 螺纹 rotation. When disassembling, only the nut needs to be loosened to separate the pipeline.
Connection Methods
Hot Melt Connection: The PPR socket is fused with the pipeline using a hot melt machine, and the strength of the interface is higher than that of the pipeline itself to ensure long-term tightness.
Thread Sealing: The external thread part needs to be wrapped with raw material tape, combined with a sealing ring for double sealing to prevent leakage.
3. Product Specifications
Correspondence between Pipe Diameter and Thread
PPR End: Common outer diameters are 20mm, 25mm, 32mm, 40mm, 50mm, and 63mm.
External Thread End: Thread specifications include 1/2", 3/4", and 1". For example, a 25mm PPR pipe is matched with a 25×3/4" specification.
Pressure Rating: Different pipe diameters correspond to a nominal pressure of 1.25-3.2MPa.
4. Product Advantages
Flexible Disassembly and Assembly
Accessories can be quickly replaced without damaging the pipeline, improving maintenance efficiency by more than 70%, which is especially suitable for areas that require frequent maintenance such as kitchens and bathrooms.
Dual Sealing Guarantee
Hot Melt Interface: The PPR main body is fused with the pipeline into one piece, and the interface strength is ≥ that of the pipeline itself, eliminating the risk of leakage.
Thread Sealing: Raw material tape + sealing ring double protection, with a pressure drop ≤ 0.05MPa under 0.8MPa water pressure for 30 minutes.
Strong Corrosion Resistance
The copper and stainless steel external thread main bodies can resist acid and alkali erosion, and the PPR material itself has no risk of rust, making it suitable for drinking water systems and corrosive industrial environments.
Long-Life Design
Under the conditions of 70℃ water temperature and 1.0MPa pressure, the service life of the PPR main body is ≥ 50 years; the anti-aging cycle of the silicone sealing ring is more than 10 years.
Convenient Installation
Standardized Operation: The hot melting time and cooling time are strictly controllable, reducing the difficulty of construction.
Tool-Free Maintenance: Daily maintenance can be completed with only a wrench for disassembly, without the need for professional equipment.
With the above design and performance advantages, the PPR external thread union has become a standard configuration in modern pipeline systems. Its flexible maintenance, high tightness, and long-life characteristics have significantly improved the reliability and economy of pipeline systems.
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