qb2 ball structure double port exhaust valve

产品厂家：

上海永要阀门厂有限公司

厂家宗旨：

“永生存，要品质精益求精”

产品质量：

保2年

& 1. [Double-port Exhaust Valve] Overview
Type B exhaust valve is an early product and is still in use today. It is mainly used for water and hot water pipelines with temperatures not exceeding degrees Celsius to exhaust all the air in the pipeline. The main components include valve body, valve cover, valve stem, float, exhaust nozzle, etc.
2. [Double-port exhaust valve] Features
It can completely eliminate the air in the pipeline, reduce resistance and save energy
When the pipeline is under negative pressure, it can quickly and automatically inhale to prevent Pipe rupture
Use stainless steel float ball, reliable sealing and long life.
3. Principle of [Double-port exhaust valve]
When the exhaust valve is required to discharge the gas in the pipeline, the valve stem should be rotated counterclockwise to make the valve stem and the valve rise, so that the gas in the pipeline The air enters the body cavity under the pressure of water and is discharged from the exhaust nozzle. Then the water in the pipe fills the body cavity, causing the float to move upward under the buoyancy of the water and block the exhaust nozzle to achieve self-sealing. When the pipeline is in normal operation, the air in the water is continuously discharged into the upper part of the body cavity of the exhaust valve under the action of pressure, forcing the float ball to descend and leave the original sealing position. At this time, the air is discharged from the exhaust nozzle, and then the float ball It returns to its original position and is self-sealing. Therefore, the exhaust valve is always open during normal operation. The float keeps repeating the above action and the air is continuously discharged. When maintenance or cleaning of the body cavity is required, the valve should be closed. This exhaust valve is closed when the valve stem is rotated clockwise.
4. [Double-port exhaust valve] Precautions
When installing, it must be used in conjunction with the valve switch to facilitate maintenance.
, when >, select b single-port exhaust valve.
If you need to change the size of the double-port exhaust valve flange, please indicate clearly.