PE compression fittings

Polyethylene or PE is one of the most widely used materials for the construction of underground fluid networks, both for drinking water and gases. Therefore, PE fittings are very important as soon as the characteristics are known and under control (dimensions; pressure; ...). 

These PE fittings allow the extension of the connected pipes. We are talking about PE fittings, but we can also use brass, stainless steel and polypropylene (PP) fittings.

Characteristics of PE fittings

Interhydro offers 4 main types of polyethylene fittings:

The thermoformed polyethylene weld joint. Butt welding, electrofusion and extrusion are the 3 welding techniques. They are reliable and very resistant to pressure despite the fact that they are not removable and do not exist for DN less than 20mm.

The compression fitting is the assembly of polyethylene, polypropylene, resins or metal. Consisting of a fitting body (tee, cone, elbow, etc.), an O-ring, a support ring, a locking ring and a tightening nut, this fitting is easy to dismantle and withstands operating pressures from 10 to 20 bar. 

The push-in or press connection consists of two parts: a coupling body and an external push-in or press connection ring. This makes it long lasting and easy to assemble. However, its dimensions are limited and it requires specific tools. 

The male spigot coupling is particularly suitable for low pressure circuits. Completed with a intox clamp, it is inexpensive despite the fact that leaks are frequent.