How to choose suitable PE electrofusion fittings according to the type of fluid?

Firstly, identify the physical and chemical properties of the fluid. For example, if the fluid is corrosive, such as certain acids or alkalis, you need to select fittings made of materials that have high resistance to corrosion.

If the fluid is a gas, such as natural gas or propane, the fittings need to be designed and rated specifically for gas applications. They should have tight seals and be able to withstand the pressure and flow characteristics of the gas.

For liquids with high viscosity, like heavy oils or thick slurries, fittings with larger diameters and smooth internal surfaces may be necessary to reduce flow resistance.

When dealing with fluids that contain particles or impurities, fittings with larger internal passageways or those designed to handle abrasive substances should be chosen.

If the fluid is at an extreme temperature, either very hot or very cold, the material of the fittings should have the appropriate temperature resistance. For instance, in a hot water system, fittings made from materials that can withstand high temperatures are needed.

In the case of potable water, fittings that meet strict hygiene and safety standards are essential to ensure the quality of the water is not compromised.

For chemicals or solvents, it's crucial to select fittings that are compatible with the specific chemical composition of the fluid to prevent degradation or leakage.

Let's take a few examples. In a chemical processing plant handling hydrochloric acid, PE electrofusion fittings made from special polymer blends resistant to acid corrosion would be selected. In a heating system with hot oil as the fluid, fittings with high-temperature-resistant materials like PTFE-lined ones would be appropriate. For a pipeline transporting compressed air, fittings rated for gas pressure and with proper sealing mechanisms would be used.