PPR pipes (or PP R pipes), made of modern plastic, are currently the standard in the process of creating sanitary, central heating and cooling systems. Polypropylene pipes and fittings are characterized by very high strength and resistance to corrosion and temperature fluctuations, which translates into the efficiency and reliability of the entire installation. Learn about the most important applications and key advantages of PP R pipes and learn how to install a PPR pipe.
Check out PPR pipes at the Onninen wholesaler
Applications and advantages of PPR pipes
Pipes made of plastics began to be used on a large scale in the 1960s. They gradually replaced metal systems, which are now used practically only in gas installations. The advantages of PP R pipes result from the unique properties of the material from which they are made. Random polypropylene determines their:
- universality,
- operational durability,
- lightness,
- flexibility,
- ease and speed of assembly (it is recommended to connect the elements by welding),
- high resistance to corrosion, breakage, abrasion and temperature fluctuations,
- total resistance to chemical contamination,
- smooth surface that prevents scale formation,
- insulating properties (effective damping of vibrations and noise from flowing water),
- relatively low price.
The system based on PP R pipes is most often found in water supply networks, as well as in heating installations (closed-circuit central heating and domestic hot water), cooling and technological installations. It can be installed in various spaces, including installation channels. PPR pipes are great for supplying cold and hot water to residential buildings and industrial facilities. They are not used in floor heating installations.
Depending on the specific application, the appropriate pipe should be used. There are many types of PP R pipes to choose from, differing in design, wall thickness or strength parameters. Two main groups can be distinguished:
- homogeneous PPR pipes – made exclusively of high-quality PP-R polypropylene,
- stabilized (layered) PPR pipes – reinforced by the addition of various materials, e.g. glass fibre or aluminium insert.
Both types tolerate the same pressures. The main difference between them is the lower expansion coefficient of stabilized pipes, hence their frequent use in systems where there is a significant difference between the temperature of the medium (e.g. hot water) and the ambient temperature.
How to properly weld PPR pipes?
PP-R pipes can be quickly and permanently connected by welding (so-called thermal polyfusion) using a welding machine. This method is considered by experts to be the most perfect, much more effective than screwing, clamping or gluing elements. Thanks to welding, there is no clear boundary between the elements at the connection point. No additional sealing of the weld is necessary.
A homogeneous "body" is created that reacts to temperature changes. Thanks to its high flexibility, the pipes bend without any problems. The assembly is very simple - especially in the case of pipes with larger diameters. The welding of PP R pipes with fittings takes place at a temperature of approx. 260°C. The ends of the pipes and fittings are heated and permanently connected. The welding process requires the use of a welding machine. Therefore, knowledge of how to operate this specialist device is necessary. Heating electrodes and basic tools are also needed.
PPR pipes in the Onninen wholesaler
In the Onninen plumbing wholesaler you will find everything you need to create an effective, durable and reliable plastic installation - sanitary, heating, cooling or technological. You can buy durable PPR pipes from brands such as Onnline , Kan-Therm and Vesbo . We also have a wide selection of PPR fittings and accessories in our assortment.
Not sure which PPR pipe will be best for your installation project? Contact us! We will offer individual products or comprehensive systems that meet your requirements.