German bar valve bar model bar price

bar valves are devices used to vent air in HVAC systems during operation. During the operation of heating and HVAC systems, gases released from water when heated, such as hydrogen and oxygen, can cause numerous adverse effects that damage the system and reduce thermal efficiency. If these gases are not vented in time, many negative consequences will occur, such as: corrosion caused by oxidation; formation of air pockets in radiators; poor and unbalanced hot water circulation, causing some radiators to be partially cold; noise in pipes when running with air; cavitation in circulation pumps. Therefore, waste gas in the system must be discharged in time, which shows the importance of using automatic air vent valves.

bar valve working principle

When the system is filled with water, gases in the water continuously escape and gather at the highest point due to changes in temperature and pressure. When the gas pressure is greater than the system pressure, the float drops, driving the valve stem downward, opening the valve port, and continuously discharging the gas. When the gas pressure is lower than the system pressure, the float rises, driving the valve stem upward, and the valve port closes. The automatic air vent valve operates in this continuous cycle.

bar valve applications

Valves installed on controllers in the system architecture to release air pockets generated in heating systems and water supply pipelines, widely used in manifold distributors, radiators, floor heating, air conditioning, and water supply systems.

bar valve installation

1) Automatic air vent valves must be installed vertically to ensure that the internal float is in a vertical position, so as not to affect air venting; 2) When installing automatic air vent valves, it is best to install them together with isolation valves, so that when the air vent valve needs to be removed for maintenance, the system's tightness can be ensured and water will not leak out; 3) Automatic air vent valves are generally installed at pipe sections where air tends to accumulate, such as the highest point of the system or the highest point of a pipe section, to facilitate smooth air venting.

Weidou Intelligent Technology specializes in selling German bar valves, bar safety valves, bar globe valves, bar control valves, bar solenoid valves, bar ball valves, bar proportional valves, bar diaphragm valves, bar butterfly valves, bar hydraulic actuated valves, bar check valves, bar pressure reducing valves, bar relief valves, bar sequence valves, bar balance valves, bar throttle valves, bar directional control valves, original German imports, welcome customers to inquire and order.