How does the exhaust valve work?

When there is gas overflow in the system, the gas will climb up along the pipeline and finally gather at the highest point of the system, while the exhaust valve is generally installed at the highest point of the system. When the gas enters the exhaust valve chamber and accumulates at the upper part of the exhaust valve, the pressure will rise with the increase of the gas in the valve. When the gas pressure is greater than the system pressure, the gas will make the water surface in the cavity drop, and the buoy will follow the water level together After the gas is exhausted, the water level rises and the buoy rises, and the exhaust port is closed. In the same way, when a negative pressure is generated in the system, the water level in the valve chamber drops and the exhaust port opens. Because the external atmospheric pressure is greater than the system pressure, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. If the valve cap on the exhaust valve body is tightened, the exhaust valve stops exhausting. Normally, the valve cap should be in the open state. The exhaust valve can also be used with the block valve to facilitate the maintenance of the exhaust valve.

characteristic

1. The float of exhaust valve is made of PPR and composite material with low density, which will not deform even if immersed in high temperature water for a long time. The buoy will not be difficult to move.

2. The pontoon lever is made of hard plastic, and the connection between the lever and the buoy and the support adopts the movable connection, so it will not produce corrosion during long-term operation and cause the system to fail to work and cause water leakage.

3. The sealing end face of the lever is supported by spring, which can expand and contract with the movement of the lever, so as to ensure the sealing performance without exhaust.

Installation: when installing the exhaust valve, it is better to install it together with the block valve, so that when the exhaust valve needs to be removed for maintenance, the system can be sealed and the water will not flow out. Low density PP material, even if it is immersed in high temperature water for a long time, it will not change.

Operation method

When water is injected into the pipe, the plug head stays at the open position for a large amount of exhaust. When the air is exhausted, there is water in the valve, and the floating ball is floated. The plug head is driven to the closed position to stop large amount of exhaust. When the water in the pipe is normally transported, if a small amount of air accumulates in the valve to a certain extent, the water level in the valve will drop and the floating ball will drop. At this time, the air will be discharged from the small hole Stop, when the water flow in the pipe is empty or the negative pressure is generated in the pipe, the plug head will open quickly to inhale air to ensure the pipeline is complete.