SNS 1/2”NPT Compressed Air Filter Regulator Piggyback Combo, Semi-auto Drain, 5 Micron Brass Filter, Gauge and Bracket, Poly Bowl with Metal Guard AW4000-N04A

I'm impressed with the SNS AR4000-N04 air pressure regulator! It's a great choice for anyone who needs accurate control over air pressure in their projects. Here's what I particularly liked:Easy Adjustment: Setting the desired pressure is a breeze. Just pull up the knob and turn - simple! No complicated instructions or finicky controls.Precise Regulation: This regulator delivers consistent and precise pressure within the 0-150 PSI range. No more guessing or wasted time with imprecise adjustments.Built to Last: The aluminum alloy body feels solid and durable, giving confidence it will withstand regular use in my workshop.Ready to Use: The included bracket and gauge make setup a snap. Everything you need for installation is right in the box.Great Value: This regulator offers excellent performance at a competitive price. It's a smart investment for any workshop or industrial application.Overall, the SNS AR4000-N04 is a dependable air pressure regulator that's easy to use and built to last. Highly recommended!

Works great to regulate my air for my nail gun when building bee boxes. Good design that allows for easy mounting.

works good for me

Worked just fine for me. Some reviews stated a problem with which side was the inlet side, I noticed on one of the photos there was a small arrow in the casting. The one I received had the same arrow and that's what I used for the inlet side. Worked great and easy to set the pressure. Seems well made and packaged very well.

After spending enough on my compressor I didn't feel like spending hundreds on a regulator so I bought this 1//2 inch one for thirty eight bucks. It is working fine maintaining 90 psi with an air grinder while provided with 175 psi on the intake. The plastic bowl is protected by a metal shield that comes off with a push of a lever and a twist. Inside the bowl is a sponge bronze filter that is held on by a plastic nut that you turn to take it off and hold it in place.The bowl itself has an o-ring at the top to prevent leaking. The regulator comes with a 1/4 MPT gauge and a bracket that I didn't use, with screws. I had a problem with leaks at first but I don't think it is the regulator's fault. The 1/2 inch pipe threads are about an inch long and seem to have a taper. The problem I had was with the hex nipples. They do have tapered threads but not consistent and not long enough. I had to select the side with the most taper and screw it into the regulator all the way until it bottomed out in order to stop the leaks. I have used 1/4 inch nipples like these and have had the same problem I don't allow any leaks in my system no matter how small. I included a photo of my hour meter that I set up using a project box that I also bought on Amazon. The meter is wired in parallel with the motor. I am satisfied that the regulator will do the job it is intended to do and have given it five stars.

Yea, this is darn near perfect. Airflow is on the low side, but to be expected of this size regulator. Its build and quality are excellent. I mean perfect. This is OEM replacement quality, in my case better.This went onto a portable Hitachi commercial grade compressor. Space is tight, so I had to remove the new diaphragm and knob, mount it, then re-assemble. Easy stuff, and apart it's build quality is even more apparent. Nice.This can be said to be a 4 port, but it's really a reversable 3 port. That is 1/4" in and out ports (directional), and two opposing 1/8" ports with a plug. Meaning you can orient this either way and just move the gauge. Perfect!I suppose I don't really know how long it will last, but it's built so well I don't expect problems. Easily worth the few extra dollars over the cheap plastic alternatives.Update: I like this so much I just bought another for a different compressor!

Do NOT buy the piggyback unless you want a leak within a week. My five star review is ONLY for the regulator. I tried the piggybacks and they all developed a leak where valve is installed in the bottom of the bowl in less than a week. 0 stars for the piggyback.I tried some cheaper piggybacks/regulators and the gauges are trash, you have to tap them to get the current air pressure, not on this one! This one is very responsive whenever you make any adjustments. I am currently installing one of these or this with the added filter/moisture trap (for only $8.00 more!) at every wall manifold/drop in my garage. (I am leaving the drop on the ceiling unregulated) if I need to use any pneumatic staplers, nailers or blow guns I have the ability to adjust the air pressure to perfectly suit the tool I am using at whichever drop I am at. I used some T-nuts I printed on my 3D printer to mount the regulator to the Gladiator wall panel and used various brass hardware to route the air from the manifold to the regulator for a rock-solid, no-leak, regulated compressed air hookup. The output has a 90 degree elbow and a Milton 5 in 1 1/4” NPT quick coupler.

The regulator seems to work fairly well and was easy to install. The pressure gauge included but not attached will not work on this regulator without substantial leaking. When threading the gauge on to the 1/4" port on the front of the regulator, the housing of the gauge hits the regulator body before the thread can be made tight enough to not leak. A Gauge with a longer thread is required.