Product Overview
| Material | PEX EVOH |
| Size | 16x2.0mm, 20x2.0mm, 25x2.5mm, 32x3.0mm |
| Working Pressure | 0.6-1.0 MPa (6-10 bars) |
| Working Temperature | -40℃≤T≤95℃ |
| Standard | GB/T28799.2-2020 |
| Color | white, red, blue, and other customized color |
| Applications | cold water supply, hot water supply and undefloor heating |
| Oxygen resistance | ≤0.1g/m³d |

PEX EVOH pipe is produced using advanced co-extrusion manufacturing to create a pipe that outperforms traditional single layer options.
PEX EVOH 3-layer pipe consists of three distinct material layers to create a pipe that optimizes flexibility, temperature resistance, durability and leak prevention:
· PEX layer - Provides a smooth waterway and the high temperature resistance of polyethylene raised temperature resistance plastic.
· Adhesive layer - To glue the PEX layer and EVOH layer and strengthen the pipe.
· EVOH layer - A highly impermeable oxygen barrier that prevents corrosion and mineral buildup in the pipe.
The function of oxygen blocking tube in central heating:
1. Oxygen tube protection equipment
In central heating systems, aluminum radiators and plastic pipes are important equipment, and they will suffer corrosion because of long-term oxidation in hot water, resulting in equipment aging and water leakage and other problems. The use of oxygen blocking tubes can avoid the contact of oxygen with hot water, which can protect the aluminum radiator and plastic pipes, extend the service life of the equipment, and reduce maintenance costs.
2. Oxygen blocking tube to prevent clogging
There are a large number of microorganisms and suspended matter in the water source, which are easy to breed in the environment of high temperature and pressure, and also cause the production of scale. The use of oxygen blocking tubes can prevent the production and reproduction of these bacteria, thereby reducing impurities and scale in tap water, slowing down the aging rate of the pipeline, and making the central heating system more stable and durable.
3. Oxygen blocking tube to improve system efficiency
The use of oxygen blocking tubes can ensure that the oxygen content in the water source does not exceed 0.1mg/L, avoid oxidation, maintain the purity of the water quality, and make the central heating system more energy efficient and the pipeline flow more stable.

As an innovative manufacturer of high-performance plumbing products, Zhuji Primy Pipe Co., Ltd. offers a full line of PEX EVOH pipes crafted to deliver strength, ease of use and an attractive appearance.
Working from a complete plumbing system, we map out each stage of the process from initial inquiry to final sale and dispatch. we focus on understanding each client's unique needs and offer customized solutions to ensure satisfaction from all our clients.
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