Hole grub
Problem:
Catalytic pitting
occurs if, for example, other metals from outside - mostly iron - are introduced
into a water-bearing copper pipe and deposit on the inner wall of the water
main piping.In an electrochemical series initiated by two different metals,
catalytic currents or potential differences are generated. As a result of
this, the iron little by little eats its way through the copper pipe until
a small hole is created and water escapes.
Pitting due to aggressive
water
may, for example, occur if water from two springs is mixed. Undesired side-effect
- the unsaturated water eventually attempts to retrieve the missing mineral
metals from the domestic system, that is, from themains. This, in turn, results
in mains leakage.
Pitting through low-mineral water
may occur if water becomes aggressive because it is very soft, that
is, if it contains very few minerals.
Solution:
WELLAN 2000 neutralises the potential differences to a large degree and thereby
minimises the danger from pitting.