Flat backwater valves
To
protect against these accidental backflows in public or domestic
sewage lines there are BACKWATER VALVES, which as an exclusive
characteristic constantly remain open while the flow is normal,
but close automatically when they detect any backflow that
may cause overflowing of the sewage at the places, which do
these valves, protect.
While these valves remain open to the flow of liquid discharges,
whether they are contaminated or not by solid loads, the evacuation
is carried out freely, without the valve interfering with the free
circulation of the contents, whatever its pressure or volume of
flow. |