In winter heating, users need to open the floor to warm the first need to exhaust, then the exhaust will need to use the exhaust valve, we must look at the installation of heating whether the construction unit is given automatic installation of heating exhaust, if not installed to the heating Exhaust is very difficult, then Xiaobian will give you a brief introduction on the installation of heating automatic exhaust valve knowledge.
[Introduction to heating automatic exhaust valve]
A functional valve used to exclude system air in heating systems such as radiators, floor heating, and boiler systems is often installed at the highest point of the system, or it can be used directly with water separators and radiators. Mainly to exclude the internal air, so that the radiator filled with warm water to ensure the room temperature.
[heating automatic exhaust valve function]
1. Evacuate the cavities to make the hot water channels open and prevent the heating from becoming warm. 2. Slow down the speed of rust on the hot water pipes. There are oxygen in the pipes and the environment is high temperature. The corrosion rate is very fast, except for stainless steel pipes. However, most people are unable to afford it. 3. Eliminating gas plugging so that the circulating pump can suck water and prevent it from burning.
[heating automatic exhaust valve working principle]
When gas is produced in the system, since the density of the gas is smaller than that of water, the gas will go up the pipe and eventually gather at the high point of the system. Therefore, the automatic exhaust valve is generally installed at the high point of the system, where the gas is automatically exhausted. The valve has the highest exhaust efficiency.
When the gas enters the automatic exhaust valve chamber and collects in the upper part of the automatic exhaust valve, the gas 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 in the cavity to fall, the buoy will fall along with the water level, the exhaust opening will start to exhaust; with the gas discharge, the gas pressure decreases, the water level rises, the buoy rises, the exhaust port shut down.
[heating automatic exhaust valve how to choose]
According to different installation environments, there are mainly the following three conditions for heating automatic exhaust valve (vent valve) selection:
1. The highest point is the vertical branch pipe, and the installation space is enough to use the single-port vertical exhaust automatic exhaust valve (bleed valve)
2. The highest point is the vertical branch pipe, but the installation space is not enough. You can use the automatic exhaust valve (venting valve)
3. The highest point is the water balance branch pipe. If there is not enough space, a right-angle heating automatic exhaust valve (bleed valve) can be used. If the installation space is sufficient and there is no right angle type, a 90° elbow can be installed. Then install single-head straight or side row
[heating automatic exhaust valve how to install]
1, floor heating automatic exhaust valve must be installed vertically on the ground, we must ensure that the buoy body in the valve vertical, can not be inverted or horizontal installation;
2, automatic exhaust device because the gas density is smaller than water, will climb along the pipe to the highest point of the system and gathered here, in order to improve the exhaust efficiency, exhaust valves are generally installed in the height of the ground heating system;
3, in order to facilitate the maintenance of the heating system, the exhaust valve is generally used with the block valve, so that the exhaust valve does not need to shut down the system
4. After the floor heating automatic exhaust device is installed, the nuts must be loosened to discharge the air, but do not unscrew them completely. Beware of large quantities of water. Remember to tighten the dust cap after exhausting.
Summary: The above has given you a brief introduction on the installation of automatic exhaust valve for heating . I hope to be helpful to everyone.
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