Is Aqua-plus suitable for drinking water?
Can Aqua-plus pipe be used in heating installations?
Is Aqua-plus pipe resistant to frost?
Can Aqua-plus pipe be heated to form bends?
Is the pipe resistant to solar radiation?
What are the contraction and expansion limits of Aqua-Plus pipes?
How are Aqua-plus pipes and fittings tested?
What is the lifespan of Aqua-plus pipes and fittings?
What do we do in the event of puncture or bursting of an Aqua-Plus pipe?
Does the cross-section of an Aqua-plus pipe block up over the years like in metal pipes?
Are Aqua-plus pipes guaranteed?



. Is Aqua-plus suitable for drinking water?
The pipes and fittings of the Aqua-plus system are non-toxic and perfectly safe for drinking water and foodstuffs.
Testimony to this is the fact that most food packaging is made of PP-R, the same material used for the Aqua-plus system.
Aqua-plus pipes and fittings are officially certified for suitability for cold and hot potable water by the WRC (UK Water Research Council), a member of NSF International, and also hold approval from the Water Technology Center (TZW) Karlsruhe, Germany, the center of applied research of the DVGW.

. Can Aqua-plus pipe be used in heating installations?
According to the tests to which Aqua-plus pipe is subjected, the relative lifespan diagrams under pressure and increased temperature as well as the properties of the material render the Aqua-plus system suitable for heating installations.
A very good solution in terms of combination of materials can be achieved by using the Aqua-plus system for the main supply and return piping supplying heating water to the manifolds of the central heating system, and Como-pex cross-linked polyethylene pipe from the manifolds to the radiators.

. Is Aqua-plus pipe resistant to frost?
Like all materials, Aqua-plus pipe requires special care during installation at temperatures near 0°C.
However, from the moment it is installed and operating, the elasticity of the material in conjunction with the relatively high wall thickness ensure that the Aqua-plus pipe will perform better than any other conventional material (e.g. metal) with frozen water, thus limiting maintenance costs for the installation.

. Can Aqua-plus pipe be heated to form bends?
Even though a full line of bends (45° and 90° components) is available, as well as a “V” bypass for vertical pipes, if necessary the pipe can be heated to 135°C by use of a special hot air device.

.Is the pipe resistant to solar radiation?
Plastic pipes generally should not be exposed to solar radiation for long periods of time. In cases where an outdoor installation is required, the pipes should be protected by means of external insulation or painted with plastic paint. Visible pipe in indoor installations (e.g. basements) need not be covered.

.What are the contraction and expansion limits of Aqua-plus pipes?
Generally speaking, plastic pipes present greater thermal expansion and contraction as compared to metal.
This is why for long straight pipe lengths measures should be taken against thermal expansion and contraction by use of expansion fittings, supports and joints. In lab tests Aqua-plus pipe presents a linear expansion of 0.5% as compared to the 2% limit set by regulations.
When the pipe is embedded in concrete it follows the general rule for plastic pipes, i.e. it expands not in length, but inwardly. This is why it is recommended that even when installing pipes in masonry the thickness of the plaster should be 3cm.

. How are Aqua-plus pipes and fittings tested?
Interplast is certified to ISO 9001 and maintains all the procedures of the Quality Assurance System. The controls to which our products are subjected start with acceptance tests for raw materials, various materials and packaging materials. This is followed by testing of the final products including dimensional and visual checks, testing under pressure and temperature, thermal memory tests, impact tests, checking at the stage of packaging and sampling control at the stage of storage.
At the same time the quality of our pipes is tested regularly (every six months) by the international certification organizations SKZ, AENOR, and WRAS by means of random sampling from the warehouses and the production lines.

. What is the lifespan of Aqua-plus pipes and fittings?
The Aqua-plus system has been designed for a lifespan of at least 25 years under non-stop operation (24 hours – 365 days) and high temperature (70°C) and pressure (10.2 bar).

. What do we do in the event of puncture or bursting of an Aqua-plus pipe?
Provision has been made in the Aqua-plus pipe and fitting system against accidental puncturing of the pipe.
By use of a special item (7/11mm nail) the damage can be repaired quite inexpensively.
Should we, for any reason, need to repair a pipe presenting a crack or break at a certain point of its length we can use an electric welding socket or a brass tightening coupling.

. Does the cross-section of an Aqua-plus pipe block up over the years like in metal pipes?
A major advantage of the Aqua-plus system is the smooth inner surface. Additionally, there are no signs of electrochemical corrosion and salt build-up (as is the case with metal pipes). The pipes remain unaffected over the course of time, thus rendering operation of the installation more economical, with no problems or need for replacement.

. Are Aqua-plus pipes guaranteed?
The Aqua-plus pipe & fittings system is covered by a 10-year guarantee by the insurance company Allianz against damages owing to substantiated material failure, to the amount of €500,000 per incident and up to € 3,000,000 per year.