At the bottom of the page, vertical pipe can be seen as

unfixed to wall, i.e., the noise level when the four sides

of the pipe are open. This test was conducted in order

to isolate air back-stroke.

Tests indicate that drainage system from cast iron with

rapid coupling has a very low noise level as an independent system.

 PAG®

 cast-iron pipes are produced from lamellar

graphite cast iron raw material in accordance with

EN1561. This product is in the category of Class A1

non-flammable construction material according to DIN1402 and it is strictly fireproof.

 In principle, cast iron pipes are easily embedded into

concrete. There is no need for any special protection

for this. Because, linear expansion coecient of cast

iron pipes (i.e. between 0,0105 mm/Mk..0 and 100°C)

equals to that of concrete.

 In this application, standard PAG RAPID couplings are

used (same as those, used for in-building applications).

While cast iron pipes are imbedded into concrete; anattractive line must be formed as is required.