German polymertechnic koradi valves, polymertechnic koradi models, polymertechnic koradi prices

polymertechnic koradi valves are devices used to vent air in HVAC systems during operation. During the operation of heating and HVAC systems, gases released by heated water, 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, they can lead to many negative consequences, such as: corrosion caused by oxidation; formation of air pockets in radiators; poor and unbalanced hot water circulation, causing partial lack of heat in some radiators; noise when pipes operate with trapped air; cavitation in circulation pumps. Therefore, waste gases in the system must be vented promptly, highlighting the importance of using automatic air vent valves.

polymertechnic koradi valve operating principle

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

polymertechnic koradi 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.

polymertechnic koradi valve installation

1) Automatic air vent valves must be installed vertically to ensure that the internal float remains in a vertical position, avoiding impairment of air venting; 2) When installing automatic air vent valves, it is recommended to install them together with isolation valves. This ensures system tightness and prevents water leakage when the air vent valve is removed for maintenance; 3) Automatic air vent valves are generally installed at pipeline locations prone to air accumulation, 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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