Composite exhaust valve overview: The composite exhaust valve for the highest point of the pipeline there is a place to close the gas to exclude the gas pipe to clear the pipeline to achieve normal work, if not installed exhaust valve, the fluid flowing inside the tube will Resulting in dynamic heat caused gas to form a short circuit so that the water pipe capacity of less than the design requirements, and second, the pipeline power outages occurred during operation, pump down the pipeline will appear negative pressure will cause pipeline vibration or rupture, row (suction) valve quickly Air is drawn into the guest to prevent the pipe from vibrating or rupturing. The principle of composite exhaust valve: When the water into the pipeline, stop the stopper in the lower part of the positioning frame, a lot of exhaust, when the air is exhausted, the water into the valve floating ball drive plug to the closure, stop row gas. Such as the normal operation of the pipeline will naturally produce a small amount of gas will converge to the upper part of the tube, to a considerable extent, the water level within the valve down, the ball at any time down from the small hole gas discharge. In the event of power failure, stop pump, water flow empty tube, the tube will appear negative pressure at any time, the float down the water, open the hole to drive a large number of large holes to ensure the safety of the pipeline.
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