Selection of a centrifugal pump, should choose high efficiency, low noise, energy-saving horizontal centrifugal pump, non-select out of product. 2, should be based on the design flow, the required pump head is selected, and consider the pump due to wear and tear and other causes pump output decline, resulting selected pump head H is multiplied by 1.05 to 1.10 coefficients can be calculated; characteristic curve should be selected with the flow rate increases It decreased its head pump 80D-12 * 6 centrifugal pump so stable, reliable work in parallel; and the operating point of the pump should be maintained in the high range of operation, such as energy and not easily damaged parts. 3, when the water supply network unregulated facilities, should adopt the rated speed governor pump or pump group running water. The maximum amount of water should not be less than residential water supply pump design flow, and should be checked with the fire conditions. 4. Select the tank, tower lift pump stations should minimize the number of pumps, should one with a prepared; when a single pump to meet the requirements, you should not use more than one parallel; if you must use more than one parallel operation or size of the pump with the way , its model, the number of units should not be excessive, models are generally not more than two kinds of 80D-30 * 5 centrifugal pumps, horizontal centrifugal lift range should be similar; parallel operation running efficiently area still within the range of each pump should. 5, life pressurized water system pump unit should be set up standby pump, spare pump water supply capacity should be greater than the maximum running pumps a water supply capacity 80D-12 * 5 centrifugal pumps should automatically switch alternately run. 6, horizontal centrifugal pump with the motor voltage should be the same, and the power with the national power grid format the same standard. The basic structure of the basic components of a centrifugal pump D46-50X4D46-50X5D46-50X6D46-50X7D46-50X8D46-50X9 centrifugal high-speed rotation of the impeller and fixed snail-shaped casing. It has several (usually 4 to 12) backward curved impeller blades fastened to the shaft, and with the shaft driven by a motor for high-speed rotation. The impeller is acting directly on the liquid within the pump parts for centrifugal pump energizing means. Central pump housing inlet and the suction pipe is connected to the bottom end of the suction line is equipped with a one-way valve. Discharge port and is equipped with regulating valve in the discharge line connected to the pump housing next. D12-25X5D12-25X6D12-25X7D12-25X8D12-25X9D12-25X10D12-25X11D12-25X12D25-30X3D25-30X4D25-30X5D25-30X6D25-30X7D25-30X8D25-30X9D25-30X10 Huaibei centrifugal pumps, 80D-30 * 4 centrifugal pumps stone yuan (Certification businesses) are provided by Anguo City Pump Co., Ltd. Shi Yuan. Road Zhiyuan, temper forward. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential centrifugal pumps business, and you leap together to success!