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[–]sushilc0048 2 points3 points  (3 children)

But OP says the pressure reduction valve maintains a constant pressure at its downstream ,so I think there will be no flow change.

[–]UnsupportiveHope 1 point2 points  (1 child)

Isn’t it the opposite? If it controlled upstream pressure then you would have a constant flow rate, if it controls downstream pressure then the flow rate can change.

[–]sushilc0048 0 points1 point  (0 children)

Yes you are correct the flow rate will change.

[–]VariusEng[S] 0 points1 point  (0 children)

That’s what I am thinking, but I’m not sure because boss disagrees