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March 27, 2020

Plastic exhaust valve

1. The quick exhaust valve is a barrel type valve body, and its internal structure is mainly a floating ball. The plastic quick exhaust valve is a screw type and a thread type. The quick exhaust valve is mainly composed of a valve body, a valve, an upper cover, a valve rod, a floating ball, an exhaust nozzle, etc. it is used on small-diameter pipes as the exhaust function of the pipes, so that the pipes will not be closed or blocked, such as negative pressure in the pipes at any time when the water pump is cut off, Automatic suction can protect pipeline safety. The plastic quick exhaust valve is applicable to the pipeline with the working temperature ≤ 80 ℃ as the equipment for removing the gas in the pipeline.
Working principle of plastic quick exhaust valve:
When the water is injected into the pipe, the floating ball will slowly float upward. At this time, the valve has been vented. When the pressure reaches a certain value, the floating ball tightly holds the rubber ring, indicating that all air has been discharged from the vent nozzle. When it is necessary to discharge the gas in the pipe, the air in the pipe enters the body cavity under the pressure of water, and is discharged from the vent nozzle, and then the water in the pipe fills the body cavity, Under the action of the buoyancy of water, the floating ball moves upward to block the exhaust nozzle, so as to achieve self sealing. In the normal operation of the pipeline, the air in the water is continuously discharged into the interior under the action of 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 then the floating ball returns to the original position for self sealing, Therefore, the quick exhaust valve is always open in normal operation, the floating ball keeps repeating the above actions, and the air is constantly discharged. When it is necessary to repair or clean the body cavity, the valve shall be closed.
The plastic quick exhaust valve is used at the highest point of the pipeline or at the place where there is gas closure. The gas in the pipe is discharged to dredge the pipeline to achieve normal operation. If the composite exhaust valve is not installed, the flowing liquid in the pipe will generate dynamic heat and cause gas, forming a short circuit, so that the water output capacity of the pipeline can not meet the requirements. Secondly, when the pipeline is in operation, there will be power failure, and negative pressure will appear in the pipeline when the pump is stopped, It will cause pipe vibration or rupture. The exhaust (suction) valve will quickly draw air into the pipe to prevent pipe vibration or rupture. The product features. The product is used at the highest point of the pipe where there is gas closure, to remove the gas in the pipe to dredge the pipe head and achieve normal operation.
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