PneumaticPlus PPR2-N02BG-2 Miniature Air Pressure Regulator 1/4" NPT - Gauge, Bracket, Instrument Pressure (3-30 PSI)

I needed an air pressure regulator that would could output 3-5 psi consistently in order to operate a laser cutter that requires extremely low air pressure at times. Initially I had a hard time finding a suitable regulator, but then came across this one. It has worked perfectly. The installation took a few extra minutes, because you have to attach the bracket to the wall, then attach the regulator to the bracket, but the process wasn't too bad. I have a larger regulator / air cleaner upstream that reduces 100 psi to about 30 psi, then it branches into this regulator to output 3-5 psi. Overall working great and I feel confident that my laser cutter is getting the appropriate air pressure.

Is perfect fit for what I use it on and that is to regulate CO2 pressure for a keg. Would buy it again if needed.

Installation and assembly was very easy. Works wonderfully with low PSI applications. Fantastic product for the price

Bought this to improve air control on my airbrushes. Sometimes I need to use very low air pressures. The regulator on my compressor was impossible to adjust below 10psi with any repeatability. I bought the 3 to 30psi version and put it downstream from the air compressor regulator. I located it so it is at hand while I'm painting. It works beautifully at ultra-low pressures with my .2mm detail airbrush. If you are getting one to use for this purpose be advised that you may have a problem finding the correct adapter. I needed to adapt the 1/4" female NPT on the regulator to the 1/8" BSP thread used by Iwata and many other airbrushes. So, I needed a 1/4" NPT male x 1/8" BSP male adapter. After searching the internet for 2 hr. I decided no one makes such an adapter. I ordered some 1/4" BSP male x 1/8" BSP male adapters. The 1/4" BSP threads are close enough you can get about 3 threads engagement into the regulator and maybe get it to seal with a lot of teflon tape. I decided to chase the threads on the adapter with a 1/4" NPT die. I was able to get full thread engagement but it still took several wraps of teflon tape to get a good seal. Installing this in my system was a PITA but well worth the effort.

I bought this to use with my pressure gauge calibration set-up for calibrating the gauges at a brewery. My old regulator "drifted" far too much, making it very hard to calibrate a gauge. This one works quite well and is stable once you get it to a desired pressure. Ports are the right sizes and locations for my use. This is a relieving gauge, so if I overshoot my desired pressure it's just a matter of backing off a bit.In the photo, the digital calibration gauge is to the right, gauge being calibrated left, on the regulator, and air in far left.

Update: I got in touch with Pneumatic Plus support which diagnosed the problem with me and sent a replacement. The replacement is working fine so far, so I’m revising my rating. I’m happy with the product and support.==========Original review:Given the premium price, I bought this thinking it would be a higher-quality part. Two months on and it slowly drains the compressor tank if left on anything other than the highest pressure setting (i.e., the same pressure as in the tank).This was sold by "Amazon.com Services LLC" and the return window closed after 30 days. There's no way to contact Amazon about this, and no information whatsoever on contacting the manufacturer. Really unhappy about being out the money and having to repair this once again.

This regulator is special since it goes to a very low psi . Its exactly what I needed.

I use this downstream of my onboard air to inflate tires to a chosen pressure without having to hold an inflator trigger the whole time, or risk over-inflating when attaching a hose directly between the compressor and tire. I've put a female coupling on the output, so to set it I plug in my inflator (with gauge) and dial in the pressure I want, then remove the inflator and replace it with a T, two hoses, and two Haltec H-5265 chucks to two tires. This lets me air up two tires at a time relatively unattended and make sure they all have the same end pressure after off-roading (15->50psi), plus makes it easy to bring up the pressure further in the rear two tires when needed for heavy towing (50->80psi).I've only used it a handful of times at this point, but it's holding up well so far, including being put loose in a bag with other air-up parts and not handled particularly carefully. Since I'm using a simple onboard air system I don't have an air filter and dryer upstream of this regulator, so I don't know how long it will last before the lack of filtering causes any problems, but no issues yet.