Pfeiffer Pfeiffer vacuum pump repair facility maintenance company Pana photoelectric

Zhongshan Pfeiffer vacuum pump repair, pump repair factory Pfeiffer, the Pana Pana photoelectric photoelectric - Maintenance provides molecular pump supply. Shenzhen Pfeiffer Vacuum Pump Repair | Pana Optoelectronics | Pfeiffer Vacuum pump repair facility in Guangzhou Pana Optoelectronics Technology Co., Ltd. (shop1367601917907.1688.com/)2014年全新升级推出的离心泵型号的确定 ① direct access to the maximum rated flow is generally flow , if not, take 1.1 to 1.15 times the normal flow. Rated head and generally means 1.01-1.1 times the required lift. The viscosity ν & gt; 20cSt or media containing solid particles, you must first rated in terms of flow and head into the water during transport. ② View series type spectrum model to investigate the rated flow and head for the initial selection may be more than one. ③ according to the rated operating point check pump performance curve falls efficient working area of ??the pump; check the pump means NPSH NPSH NPSHr NPSHa- meets the requirements (Same as above 1. ③). 2. mechanical seals, sealing effect, a small amount of leakage, long life, but expensive, higher processing installation and maintenance security requirements applicable to transport petroleum and chemical medium, can be used for a variety of different viscosity, corrosive and containing particles media. 3. dynamic sealing performance, reliable, cheap, easy maintenance, suitable for conveying solid particles contain more media, the disadvantage is the large power loss than the mechanical seal and the pump is stopped after a short-lived operation of power sealed.