Quick Exhaust 
With large exhaust valve, when the pipeline starts filling when the valve is open, air is discharged from a large number of large exhaust port, float blocked by a floating cover, will not be high-speed air flow caused by direct blows exclude endless, and cause pipeline rattling;

Trace exhaust 
When the pipeline is filled with water when the exhaust valve closes the exhaust port and the outside world large, the water in the flow process, the air dissolved in water is gradually released, gathered in height, the exhaust valve body cavity, when the gas reaches a certain amount will float pushdown, gas lift cover from the bottom of the exhaust port trace;

When the pipeline is about normal exhaust when filled with water, the water float cast uniformly distributed through the hole into the float will float cover vertical float float float led up until the valve cover large exhaust port closed, complete rapid discharge process;

Unlevered control 
Vertical float up and down movement, flexible, non-jamming, to avoid the traditional float valve lever drive, easy to produce dead can jam;

Large spherical sealing valve exhaust port, micro exhaust vents are used spherical sealing principle, the sealing surface with an automatic tendency to find the center to ensure that the sealing surface concentricity, achieving zero leakage;