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Automatic air vent valve R99 for heating and cooling systems, 1/2". More information
Delivery to Belgium (days are avarages)
DHL Express: 1.6 workdays, € 16,94
| Connection size | 1/2" |
| Weight | 0.19 kg |
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Certificate of conformity download
Download PDFThe valve is applicable in all heating and cooling systems where it is necessary to release air to prevent damage to the distribution network. It automatically releases air from the pipes as soon as the system overpressure increases and conversely prevents vacuum formation by admitting air when water is being drained from the system. In cooling systems, it is capable of working with antifreeze mixtures based on glycol with a maximum concentration of 50% and a minimum medium temperature of -30 °C.
High-quality materials ensure high reliability and performance. It is designed to withstand increased load during water network filling and thus high initial air release, as well as intermittent air release during normal operation.
Inside the valve body, there is a float. If the entire space is flooded with water, the float is in a raised position, and the valve remains closed, preventing any discharge. If the level drops and air enters the valve space, the float descends and the valve opens to release excess air. The water level then returns to its original level, and the valve closes again.
There is a cap on the valve that can close the entire valve, but it remains open during normal operation.
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