Bleeding and venting valves remove air or gases automatically from/to tanks, vessels or pipelines. They are float-controlled valves which close as the liquid level rises and open as the level falls. We can offer continuous, startup or combined bleeding and venting valves.
A rising liquid level lifts the float and closes the valve, in most cases via a system of levers. If the liquid level drops because air is entering the system or the plant is starting up, the valve will open and either admit air or vent the air from the system.