| | | • Simple construction and trouble free operation • Only one moving part, the free float, eliminates concentrated wear and provides long service life • Precision-ground float and valve seat rubber contact assures seal tightness when vent is closed • Also functions as a vacuum breaker | | |
| | | _ Gas from 1 inside the piping is very quickly pushed out around the float guide by liquid pressure. | | 2After venting, the float rises with the rising liquid level, closing the valve. Once closed, the valve will not reopen, even if gas enters the vent and the water level drops. | | 3When the pressure inside the piping drops to equal to or less than atmospheric pressure, the float drops opening the vent. Air is allowed to enter to facilitate the drainage of liquid from the piping. | | |
| | | concentrated wear and provides long service life • Precision-ground float and valve seat rubber contact assures seal tightness when vent is closed • Also functions as a vacuum breaker VS1C • Works in lquids with low specific gravity ( p > 0.8) • High corrosion resistance due to stainless steel body and fluorine rubber (FPM) valve seat • Useable with high pressures and temperatures ■ Automatic Air Vent Operation: VS1C | | |
| | | Gas from inside the piping is quickly pushed out around the float by liquid pressure. | | 2After venting, the float rises with the rising liquid level, | | When gas flows into the vent body, the liquid level decreases. The float drops, opening the vent and allowing gas discharge. When the liquid level rises after venting, the float again closes the vent. | | At system shutdown, when the pressure inside the piping drops to equal to or less than atmospheric pressure, air is allowed to enter to facilitate the drainage of liquid from the piping. | | |