Centrifugal pump device is the key to determine the technical level of the pump device. The height is the vertical distance from the water surface to pump impeller centerline, it and promised to ceiling on vacuum height can not be mentioned in the same breath, pump nameplate or commodity clarify book marked the promised suction height is refers to the section of the water inlet of the water pump of the vacuum value, and is under standard atmospheric pressure; the water temperature 20 degrees Celsius, test and determination to come. It does not think about the future of water absorption pipe flow situation. The pump installation height should be allowed to suck on a high vacuum suction pipe loss of head in the future, the remaining part of the value, it is to overcome the practice of water absorption height. Pump device height can not exceed the accounting value, otherwise, the pump will not be pumping water to come. Also, the size effect of accounting value is the suction pipe resistance loss of lift, so should use the shortest line placement, and minimize the loaded elbow fittings, properly equipped with larger diameter water mains to think, to reduce the flow velocity in the tube.
From the pipeline device skill, the water pipe request strict sealing, can not leak, leakage, otherwise will damage the vacuum pump inlet, pump the water makes the cut, severe and even pumping Sheung Shui. Therefore, to do a good job in the pipeline interface operations, to ensure the quality of the construction of the pipeline connection.
