PEX pipes are manufactured through a process called extrusion. Extrusion is a process that is applied to manufacture objects that will have fixed cross- sectional area. In this a material is pushed through a die of the desired cross-section.
• This flexible design allows them to be stored on spools. They are therefore easy to ship. The do not require cutting into practical sizes as is done for metallic pipes for shipping.
• PEX pipes account for low shipping and handling cost. They do not need large storage space and have lesser weight.
• Installing PEX pipes is also easier. They need fewer fittings. They can bend 90 degree without being supported by elbow fittings. They can be installed right from the spools by unrolling them without any coupling fittings.
• PEX pipes are also resistant to scaling, which is common in metallic pipes. They also do not corrode when exposed to acidic water.
• They are also resistant to freezing and therefore do not crack which is common in copper and plastic pipes.
• They do not transfer heat as readily as copper.
• Water flows without any sound through PEX pies. So there is no chance of water hammer.