Pump outlet diameter change
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This post was last edited by foam_ZPTK on 2018-7-27 08:48. The tank outlet is 80, and now since the pump outlet also needs to be 80, I want to add a reducer to the tank outlet to make it 100. Is this method of local diameter change without altering the outlet size of the tank correct?
Is the tank behind the pump? If so, there’s no problem making changes
Let me put it this way: the device outlet has a DN80 diameter, while the pipe tees increase the diameter to DN100 at the pump inlet; the pump outlet has a DN80 diameter； Calculate the pressure drop in the pump inlet pipeline; if it does not meet the minimum net positive suction head requirement, cavitation may occur.
The inlet pipeline of the centrifugal pump should be no smaller than the pump’s inlet dimensions
I’m not quite sure what the statement means. My understanding is: you want the pump inlet to be 100, the pump outlet to be 80, and the diameter of the tank’s outlet pipe is 80; so a reducer is used to change that diameter to 100 in order to connect it to the pump inlet, is that correct?
Is it because I didn’t study Chinese or something? I can’t understand it!
The last edit to this post was made by 3983596_FPPZ on 2019-3-31 at 13:26. Well, my Chinese isn’t very good, so please repeat it in English; I should be able to understand it