Hey Laszlo
I put mine right at the outlet of the “Canister”…before the paint went into the Line..
2) Things…
A) I thought it was better because it would catch the impurities before they traveled all the way through the line.
B) There is a FLOW ARROW on the Filter. You must put the filter in the Line…the way the paint flows. Does that make sense? You’ll see an arrow. Just make sure that’s the way the paint is flowing through it.
Anyhow…I had to place mine at the beginning…because that was the way the Flow Arrow indicated and if I even tried to install it at the Gun End…the nuts and attachments would’ve made the filter backwards. SO…it worked out.
How’s that?
Dan