"Gas tied phenomenon": If the centrifugal pump before starting shell filled gas, after the start of the impeller central gas was thrown not form a sufficiently large degree of vacuum in the area, so the body of liquid can not be sucked on. This phenomenon is called gas tied. In order to prevent the occurrence of gas tied, before starting to use external centrifugal pump housing space filled with liquid. This step is called priming. In order to prevent the liquid poured into the pump housing by gravity flow into the low slot IS100-65-250B mechanical seal, the entrance to the pump suction line is equipped with non-return valve (foot valve); if the pump is lower than the tank liquid position face, when you start without irrigation pump. Shijiazhuang-send pump IS centrifugal water pump Overview: IS clean water pump, also known as single-stage single-suction (axial suction) centrifugal pump (referred to IS pump) mechanical seal, also known as the water pump mechanical seal IS100-65-315B is the joint design of energy efficient pumps, performance and size of the design in accordance with ISO2858 international standards required by its technical standard to meet international advanced level, it is one of the promotion of energy-saving pumps. Shijiazhuang-school Pump IS clean water pump benefits: a full range of hydraulic performance and reasonable layout, the user selects a wide range IS100-65-315A mechanical seal, easy maintenance; efficiency and suction lift up to international advanced level average. Shijiazhuang-school Pump IS clean water pump for industrial and urban water supply, drainage, can also be used for agricultural irrigation and for conveying water or physical and chemical properties similar to water or other liquids, IS pump temperature is not high 80 ℃. IS100-65-250B mechanical seal | Mechanical seal | water pump provided by the Shijiazhuang-Pump Co., Ltd. faction. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!