Exhaust valve used in independent heating systems, central heating systems, heating boilers, central air conditioning, floor heating and solar heating systems such as pipeline exhaust. Because the water is usually dissolved in a certain amount of air, and air solubility decreases with increasing temperature, so that water in the process of circulating gas gradually separated from the water and gradually together to form a large bubble or even the air column, Because of water replenishment, gas is often produced. Exhaust valve includes air conditioning exhaust valve, solar exhaust valve, heating exhaust valve, boiler exhaust valve. Exhaust Valve (Figure 1) How the Exhaust Valve Works: When gas is spilled in the system, the gas climbs up the pipe and eventually collects at the highest point in the system, while the exhaust valve is typically installed at the highest point in the system. When the gas enters the valve cavity of the exhaust valve and collects in the upper part of the exhaust valve, the pressure rises as the gas in the valve increases. When the gas pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop. exhaust vent. Gas exhausted, the water level rise, the buoy also will rise, close the exhaust port. By the same token, when negative pressure is generated in the system, the water level in the valve chamber drops and the exhaust port opens. Since the ambient atmospheric pressure is larger than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent negative pressure. If you tighten the valve cap on the exhaust valve body, exhaust valve to stop the exhaust, under normal circumstances, the bonnet should be open. Exhaust valve installation points: 1. Exhaust valve must be mounted vertically, that is, it must ensure that its internal float in a vertical state, so as not to affect the exhaust; 2. Exhaust valve installed, it is best to install the isolation valve, so When the need to remove the exhaust valve for maintenance, to ensure that the system is sealed, the water will not flow out; 3. The exhaust valve is generally installed in the highest point of the system will help improve the exhaust efficiency.
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