The radiator is installed on the wall, and there are two valves. Do they have the same function?

One is the air inlet and the other is the air outlet.

When there is air in the system, the gas will gather in the upper part of the exhaust valve, and the gas in the valve will accumulate and the pressure will rise. When the gas pressure is greater than the system pressure, the gas will make the water level in the cavity drop.

The buoy drops with the water level and opens the exhaust port; After the gas is exhausted, the water level rises, and the buoy also rises, closing the exhaust port. If the bonnet on the valve body is tightened, the exhaust valve stops exhausting. Under normal circumstances, the hood should be open. It can also be used with isolation valve to facilitate the maintenance of exhaust valve.

Extended data:

(1) Pipes and fittings must be sanitary, nontoxic and pollution-free.

(2) The heat resistance of pipes and fittings must be able to be used above 95℃ for a long time, and the short-term use temperature can be above 1 10℃, and the expansion and expansion coefficient should not be large.

(3) The pressure resistance of pipes and fittings must be able to be used for a long time above the water pressure 10bar, and it has the characteristics of high strength, no leakage and no rupture. (4) Pipes and fittings shall be corrosion-resistant and free from scaling.

⑤ The pipeline has good thermal insulation effect and low thermal conductivity.

⑥ The internal and external walls of pipes and fittings should be smooth, with small flowing resistance, soft color and beautiful appearance.

All landowners hot melt connection and installation should be convenient and reliable.

Today, the nominal pipe diameter of pipes and fittings should meet certain manufacturing standards and universality, and the general pipe diameter here is DN20/25.

Pet-name ruby design flow of the pipeline should not be too large, and the water flow velocity in the inner diameter of the pipeline should not be greater than 0.8 ~1.0m/s. Too high flow velocity is unfavorable to the system resistance, and too low flow velocity will increase the system cost, so it should be fully considered when selecting.

Baidu encyclopedia-radiator

Baidu encyclopedia-radiator exhaust valve