<a href=showthread.php?s=&postid=10197530#post10197530 target=_blank>Originally posted</a> by jdieck
The JBJ has a pre-set fixed delivery pressure setting so it will not have means to adjust the output pressure which by the way at 40+ is is about twice what I would prefer assuming the output gauge is still within calibration.
With that high pressure at the outlet you should have very good flow unless the needle valve orifice is plugged (salt creep could do that) or the solenoid valve is damaged.
Close the cylinder valve, unscrew the bubble counter (careful not to break it. Unscrew the needle from the needle valve and inspect the orifice for obstructions or dirt. Without the needle and bubble counter you shall be able to se some light looking into the needle valve seat.
With the solenoid unplugged, you can try using a syringe with RO/DI water to inject trough the needle orifice and make it flow to the bubble counter orifice. Re assemble.
Checking the solenoid without removing it will not be easy, basically you should hear a clear clicking when plugged or unplugged.
See if that help.
Remember to fully test for leaks when putting the regulator back in use using a bit of dishwashing soap in water.