Jon's 4th build: SSCM-1E

[McCreed]

Also, you can put two regulators in series. I have a moisture trap + regulator in the middle of my airline. So with that arrangement you can set the pressure on the compressor regulator down to say 30psi, which means that the second regulator should have less work to do in controlling to a bit less than 20psi.

That's good idea Simon. I hadn't though about that approach. In part because I didn't think about the regulator placement on Jon's rig.
I also use two reg's but I have my second one (including inline water trap) just before the gun. I run the regulator that's on the compressor wide open and rely on the second one to set my nozzle pressure.

[jonwhitear]

I also use two reg's but I have my second one (including inline water trap) just before the gun. I run the regulator that's on the compressor wide open and rely on the second one to set my nozzle pressure.

I have the same setup. Next time I get the gun out, I'm going to experiment with setting the reg on the compressor. I don't even know how to yet!