Methods Of Controlling Upstream And Downstream Pressure

[jamesnzx]

Hi,
Can someone kindly suggest me some methods of controlling upstream pressure as well as downstream pressure, whereby the upstream pressure should be keep at about 50 to 60bar (reject from reverse osmosis unit) and downstream pressure at 20bar maximum since the downstream equipment is sensitive to pressure.
Thanks in advance

 

[russ_watters]

Without much more information about what you are trying to do, all I can suggest is a pump and valves.

 

[Jobrag]

Does all of the RO unit waste have to go through the down stream unit?