I have a question about pumps?

2019-02-12View Original

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This post was last edited by foam_ZPTK on 2019-2-12 at 20:52. What is the difference between a regular Roots pump and one equipped with a bypass valve? What are their respective advantages?

Reply #22019-02-12

This post was last edited by Frozen Desert on 2019-2-12 10:02: https://wenku.baidu.com/view/3677ba2553ea551810a6f524ccbff121dd36c5c4.html

Reply #32019-02-12

Is this asking for advice or being asked for advice; P

Reply #42019-02-12

It should be the first time; I don’t know what’s going on. It seems like they want to give a reward for replying

Reply #52019-02-14

I asked others questions and even created a paid theme. Others can’t see the content you post unless they pay.

Reply #62019-02-14

I have canceled the paid theme you set

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I have a question about pumps?

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