Selection of vertical fire pump 1) Ordinary fire pump Working condition 1: At the suction depth of 1m, it shall meet the requirements of rated flow rate (Qn) and rated pressure (Pn), and the working pressure shall not exceed 1.05 times of t……

(1) check and prepare before start hot oil pump : 1) check whether the solid bolts such as the foundation of the unit, the wheelset and the bearing end cover are loose, and whether all the wire blocks are fully fastened. The motor wiring sh……

1. The centrifugal pump head estimating method Hvac centrifugal pump selection: usually choose than revolutions ns in 130 ~ 150 clear centrifugal pump, centrifugal chiller rated flow of centrifugal pump flow rate should be 1.1 ~ 1.2 times (……

Centrifugal pump type and application Centrifugal pump is usually divided into the following kinds: single-suction multi-stage segmental vertical centrifugal pump, open in the single stage double suction centrifugal pump, single-stage singl……

Wells with submersible pump with the high-speed development of science and technology in our country, the competition also received a lot of ascension, such products using site is more special, customers need to pay attention to when product……

Centrifugal pump impeller classification: The impeller according to its mechanical structure, half closed closed impeller impeller and open impeller. 1：closed impeller blade on both sides with the former, HouGaiBan, closed impeller efficiency is h……

Centrifugal pump classification: 1, according to the number of impeller to classification: 1), single pump: namely on the pump shaft is only one impeller;2), multi-stage pump, or on the pump shaft, there are two or more than two impeller at this time……