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An analysis of the method of water intake and exhaust of centrifugal pump

Here are some methods of water filling and exhaust.
1.  At the inlet and outlet valves of water filling. This method is installed in the inlet pipe of a valve, then the water pipe can be filled with water.
2. Hand pressure pump water filling. Some pumps with a hand pump, can also purchase or do small hand pump installation must be installed in the water inlet valve. After the valve is closed, the first small amount of water filled with water for water diversion, and other hand pressure pump water, said the pump has been filled with water, you can start work.

3.  The use of vacuum equipment exhaust water filling. Centrifugal pump and vacuum pump exhaust gas is the same reason, so the use of water ring vacuum pump exhaust to reach the role of water filling. 

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