Exhaust valve

Exhaust valves are used for pipeline exhaust in independent heating systems, centralized heating systems, heating boilers, intermediate air conditioning, floor heating, and solar heating systems

Principle

When there is gas overflow in the system, the gas will climb up the pipeline and eventually gather at the high point of the system. The exhaust valve is generally installed at the high point of the system. When the gas enters the exhaust valve chamber and gathers at the upper part of the exhaust valve, the pressure increases with the increase of gas in the valve. When the gas pressure is greater than the system pressure, the gas will cause the water level in the chamber to drop, and the float will drop with the water level, opening the exhaust port.

; After the gas is exhausted, the water level rises and the float also rises, closing the exhaust port. Similarly, when negative pressure is generated in the system, the water level in the valve chamber drops and the exhaust port opens. As the external atmospheric pressure is greater than the system pressure at this time, 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 and the exhaust valve stops discharging, the valve cap should usually be in an open state. The exhaust valve can also be used in conjunction with the isolation valve to facilitate the maintenance of the exhaust valve

Characteristics

1. The float of the exhaust valve is made of low-density PPR and composite materials, which will not deform even if soaked in high-temperature water for a long time.

. It will not cause difficulties in the movement of the float2. The float lever is made of hard plastic, and the connection between the lever and the float and the support is made of movable connections, so it will not rust during long-term operation, causing the system to malfunction and leak water3. The sealing end face of the lever is supported by springs, which can expand and contract with the movement of the lever, protecting the sealing performance without exhaustInstallation: When installing the exhaust valve, it should be installed together with the isolation valve. This way, when the exhaust valve needs to be removed for maintenance, it can protect the sealing of the system and prevent water from flowing out. Low density PP material, which will not deform even after prolonged immersion in high-temperature water

Operation Method

When water is injected into the pipe, the plug head stays in the open position for a large amount of exhaust. When the air is discharged, water accumulates in the valve, and the float ball is lifted. The plug head is driven to the closed position to stop a large amount of exhaust. When the water in the pipe is transported normally, if a small amount of air accumulates in the valve to a considerable extent, the water level in the valve drops, and the float ball also decreases. At this time, the air is discharged through the small hole. When the water pump stops, When the water flow inside the pipe is empty or negative pressure is generated inside the pipe, the speed of the plug should be suitable to open, inhale air, and confirm that the pipeline is complete