172-65170MA-06 (VAS) 9 Jul 2015
4
Features
1. The air vent has no hinges or levers: the only moving part is the precision-ground
float, which eliminates concentrated wear and provides long service life.
2. Simple construction with few parts allows for easy maintenance.
3. The air vent is small and light.
Operation
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
1. When water is transported, air inside the piping is
forced into the air vent by the pressure of the flow.
The float inside the air vent is in the lower position,
thus the valve is fully open and allows the air that
enters the air vent and fills the area around the float
to then be discharged.
2. When discharge is completed, as water flows into the
air vent, the rising water level causes the float to rise
and to close the valve.
If there is a rapid rise in water level (caused by
rapidly opening a shut-off valve, etc.), a small amount
of water may leak with discharged air immediately
before the air vent closes.
3. Once it has closed, the air vent remains closed as
long as there is internal pressure.
4. When draining the piping, the air vent automatically
opens to introduce air and remove water more easily
(preventing a vacuum from forming in the piping).
Air
Water
