German Walther-Werke valves Walther-Werke models Walther-Werke prices

Walther-Werke 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 promptly, many negative consequences may occur, such as: corrosion caused by oxidation; formation of air pockets in radiators; poor and unbalanced hot water circulation, causing partial lack of heat in certain radiators; noise from pipes operating with trapped air; cavitation in circulation pumps. Therefore, waste gases in the system must be vented promptly, highlighting the important role of automatic air vent valves.

Walther-Werke valve working principle

When the system is filled with water, gases in the water continuously escape due to changes in temperature and pressure, accumulating at the highest point. When the gas pressure exceeds the system pressure, the float descends, driving the valve stem downward to open the valve port, allowing continuous gas discharge. When the gas pressure falls below the system pressure, the float rises, driving the valve stem upward to close the valve port. The automatic air vent operates in this continuous cycle.

Walther-Werke valve applications

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

Walther-Werke valve installation

1) Automatic air vent valves must be installed vertically to ensure that the internal float remains in a vertical position, so as not to affect air venting; 2) When installing automatic air vent valves, it is recommended to install them together with isolation valves, so that when the air vent valve needs to be removed for maintenance, the system remains sealed and water does 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.

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