3. The speed of the pump shaft speed refers to the speed at 150SV-SPR liquid slurry pumps per minute, with the "n" represents, the unit is r / min 4. efficiency and shaft power pumping efficiency slurry is referred slurry efficiency, with "η" indicates 65QV-SPR liquid slurry pump, and pumping water efficiency when it has the following relationship ηm = ER η% (1-6) Where:? ER- and slurry characteristics of the The efficiency reduction factor, the value lower coefficient HR and head equal, that HR = ERη- efficiency when pumping water%, when the test began to get centrifugal pump cavitation, cavitation smaller area of ??the pump is not working properly significant impact on pump performance curves do not clearly reflected. But when cavitation caused by the development of intermittent stream channel to a certain extent, the occurrence of vibration and noise while pump flow, head and efficiency decreased, the pump performance curve is also evident 100RV-SPR under liquid slurry pumps | slurry pumps | liquid pumps (view) Ltd provided by the Shijiazhuang-send pump. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is a professional, "slurry pumps, submersible pumps, sewage pumps, chemical pump, pulp pump, water pump, mud pump, multi-stage," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "Shijiazhuang-faction" brand has a good reputation. We adhere to the "service first, customer first" principle, so Shijiazhuang-pump in the other faction, has won the trust of the public, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!