Vartsila manufactures Float Operated Air Vent Valve .Vartsila is an ISO 9001:2000 certified company. The Company also manufactures Clean Strainer, Air Vent Valve, Pressure Reducing Valve, Concealed Flush Valve, Drainn Gun. The Float Operated Air Vent Valve is used at top of wet risers of fire fighting systems, at ends of vertical uptake line [top] of hydro-pneumatic systems. In HVAC lines wherever air needs to be removed automatically without wasting chilled water into the drain etc. The Float Operated Air Vent Valve has built-in filter which prevents ingress of dirt and foreign particles.