Hey...it's a regulator...and it works fine for me. Appears to be well made. It holds pressure nice and steady when used with spray guns. Only had it for a couple of weeks so can't speak to longevity. Have it plumbed right after a water/oil filter at 150 psi max input pressure. Have it feeding a MotorGuard M-60 filter at around 100 psi. Very happy with its performance so far.