decreasing needle valve sensitivity by lower low pressure output, do i have it right

Ach1Ll3sH33L

Junior Poster
Dec 12, 2011
30
0
6
So i was playing with my regulator last night, I inject co2 straight into a sump pump, so i dont need high pressure for a diffuser, and i found as i lowered the output pressure, it reduced the sensitivy of the needle valve so i could adjust co2 in smaller increments it seems. Is there any downside to running lower pressure like this? My only thought is maybe this creates some fluctuation as the pressure is lower, any thoughts on this?
 

oldpunk

Guru Class Expert
Dec 1, 2009
427
4
18
With a single stage regulator, running a low working pressure will result in more psi rise when the tank runs out. That's about it though.