Self-priming pump work in the pump when the need to fill the water, self-priming pump work in high-speed impeller rotation, the water flow to the volute, which is the result is a vacuum at the pump inlet. Self-priming pump has the advantages of compact structure, convenient operation, stable operation, simple maintenance and high service life. At the same time such products do not need to be installed at the end of the valve at work, as long as the pump to meet the work of the pump on the line. Next, the self-priming pump technical parameters will be analyzed and introduced. Self-priming pump Technical parameters Flow: 5-800m3 / h; Head: 12-60m; Motor power: 2.2-55KW; Speed: 1450-2900r / min; Caliber: φ25-φ300; Medium temperature: ≤100 ℃; : 4.5-6.0m. For example: 50ZW15-30 50-inlet diameter (mm); ZW-self-priming non-clogging sewage pump 15-flow (m3 / h); 30- head (m); P- stainless steel; B- explosion-proof motor. Self-priming pump installed in the rocker-type nozzle, but also the water rushed into the air, scattered into a small rain spray, is a farm, nurseries, orchards, vegetable gardens, a good tool. For water, seawater and acid, alkalinity of the chemical medium liquid and paste with the general paste, and any type, size of the filter press supporting the use of the slurry pressure to the filter press Filter the best matching pump species. Through the above description of the technical parameters of the self-priming pump, we can sum up the self-priming pump flow, head, motor power, speed, diameter, medium temperature, self-priming height and other parameters have their own appropriate use of the range, I believe only to protect these parameters within the normal range, in order to ensure efficient self-priming pump work. Visible self-priming pump technical parameters for the importance of self-priming pump. If users can play the best working condition of each parameter according to the actual situation, I believe the use of self-priming pump will be more effective.