■ Overview

QB1The exhaust valve is a cylindrical valve body, and its internal structure mainly consists of stainless steel floating balls. This valve is divided into two types: threaded and flange exhaust valves.QB1Type applicability and working temperature≤80℃On the pipeline, as a device for removing gas from the pipeline.

When water starts to be injected into the pipe, the float will slowly rise upwards, and at this time, the valve has been vented. When a certain pressure is reached, the floating ball tightly presses against the rubber ring, indicating that all the air has been discharged from the exhaust nozzle.

■Part Material

1. Valve body, cast iron

2. Valve cover, cast iron

3. Floating ball, stainless steel

4. Plug, rubber

5. Exhaust nozzle, brass

6. Screws, nuts, and elemental steel

Working principle of internal threaded single port exhaust valve: When it is necessary to exhaust gas from the pipeline, the air inside the pipeline enters the body cavity under the pressure of water and is discharged from the exhaust nozzle. With the water filling the body cavity, the floating ball moves upward under the buoyancy of water, blocking the exhaust nozzle and achieving self sealing. During normal operation of the pipeline, the air in the water is continuously discharged into the upper part of the body cavity of the exhaust valve under the pressure, forcing the floating ball to descend and leave the original sealing position. At this time, the air is discharged from the exhaust nozzle, and the floating ball returns to its original position for self sealing. Therefore, the valve is always open during normal operation of the exhaust valve, and the floating ball continues to repeat the above action while the air is continuously discharged. The sentence is:. When it is necessary to inspect or clean the body cavity, the valve should be closed. Application and main performance specifications of internal thread single port exhaust valve:1This valve is suitable for temperatures not exceeding100Drain all the air inside the pipes of water and hot water at a temperature of ℃.2Install a dual port exhaust valve, and be sure to install a protective valve or ball valve underneath（Q41F-16）To avoid water interruption during inspection.3If the buyer requests any changes in the size of the exhaust valve flange, please indicate the flange connection size in the contract.