wrobel
2016-04-24 23:14:47
- #1
Moin Moin
A backflow flap does not automatically mean backflow protection.
Is a lifting system installed?
Or is the basement above the backflow level?
Olli
A backflow flap does not automatically mean backflow protection.
Is a lifting system installed?
Or is the basement above the backflow level?
Olli