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⚡ Keep your compressor in peak form — no leaks, no hassle, just power!
The Hromee Air Compressor Check Valve Kit features a robust brass construction with stainless steel springs and fluoropolymer poppets, designed to prevent backflow and maintain optimal air pressure up to 450 PSI. It includes 4 pieces with 1/2 inch MNPT connections and two versatile unloader fittings, supporting 20 SCFM airflow. Ideal for replacing worn valves on various compressors, this kit ensures reliable, maintenance-friendly performance with easy installation and pressure switch compatibility.






















| ASIN | B07MHGPT63 |
| Best Sellers Rank | #55,774 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #138 in Air-Compressor Accessories |
| Brand | Hromee |
| Brand Name | Hromee |
| Connector Type | Barb, Push to Fit |
| Customer Reviews | 4.5 out of 5 stars 1,117 Reviews |
| Exterior Finish | Brass , Stainless Steel |
| Item Dimensions | 4 x 4.6 x 1 inches |
| Item Weight | 4.64 ounces |
| Item dimensions L x W x H | 4 x 4.6 x 1 inches |
| Manufacturer | Hromee |
| Manufacturer Part Number | HR4011 |
| Material | Brass |
| Material Type | Brass |
| Maximum Operating Pressure | 450 psi |
| Maximum Pressure | 450 psi |
| Model Number | HR4011 |
| Number of Items | 4 |
| Number of Packs | 1 |
| Number of Pieces | 4 |
| Number of Ports | 2 |
| Outlet Connection Type | MNPT |
| Set Name | Kit |
| Size | 1/2 inch |
| Thread Size | 1/2 inch |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Valve Type | Check Valve |
E**S
Was An Exact Replacement for my Compressor
I purchased this to use on my Campbell Hausfeld compressor which I bought used. The one that came with it was not unloading properly causing the compressor to struggle with restarting under pressure. That has been resolved with this valve. I was a bit surprised it did not come with the nut and compression for where the 1/2" line goes into the top of the valve. But it was not in the picture so can't really complain about it. After the installation it was leaking around the top connection since there was no brass compression ring. I had to buy one at the hardware, which was not a huge deal, to stop the leak - which it did. Just something to be aware of if you are planning to pick one of these up. Other than that, it went together smooth and resolved my compressor restart issues as expected. I can totally recommend this valve for others needing to replace one of this size. It's well made and comes with two fittings (minus the top nut and compression ring) and all threads have sealant making the installation pretty straight forward.
V**G
Everything you need. Great price
Worked great. Very solid kit
R**L
as advertised
perfect fit, works as it should
M**Y
Good Replacement For Craftsman Check Valve
I had acquired a Craftsman 25 gallon air compressor several years ago, but never used it, so it basically sat in my shed for years until I recently decided to get it up and running. I knew I needed to put in some fresh oil and check the main parts, including the check valve. When I took the old one out, it was somewhat corroded but still in working order, but I wanted to replace it with a new one just to be safe. Lo and behold, the exact replacement piece was no longer available. That's when I searched around and found this one, Hromee Air Compressor Replacement Components Brass 1/2 Inch MNPT Compressor in Tank Check Valve Kit . While the dimensions were slightly different (this one was slightly longer), it fit the tank perfectly and was a good replacement part. From what I can tell, the compressor is working perfectly and I have a brand new compressor for my shop. I would say just measure carefully and compare the old one to the new one as best as you can before ordering, because I actually had ordered another one first and top compression inlet was the wrong size so I had to send that one back. I would recommend this kit for replacing your check valve.
C**G
Perfect
Fit great no leaks
M**O
Que fue llegar y enroscarlo
Las especificaciones de roscas están bien 1/2 para el tanque 11/16 para el tubo que viene del compresor 1/8 para el tubo que va al interruptor
T**E
fits
fits great right one for my 60 gallon kobalt
C**C
Leaky
My first attempt with this didnt go well, but since there are so many positive reviews, and this one of only a few options I've found for my machine, I. Going to give it another go. This is a jigsaw I threw together to confirm it was bad. If the replacement is any better, I'll come back to update the review. Update: I received the replacement and it's working fine. I'll add 2 stars, 1 for good customer service, and 1 for the 2nd one working properly. 3 total with the decent price. Just gotta get that quality control in check. I'll update again if it starts leaking again.
C**E
in tank check valve
good quality, fit and worked perfectly
A**R
Replacement for old compressor tann
Works as it should. Quick connection connected well and hasn't leaked. Over a year ownership.
G**O
Fit great in Devilbiss Pro 4000 air compressor
Perfect replacement for the Devilbiss Pro 4000 air compressor, although it was slightly longer than original. I have to point out that true measurement would have you looking for a different size, I think I wasted hours looking for 3/4 Inch instead of 1/2 but EVERYTHING said this air compressor original was 1/2 inch so I trusted it and ordered this. After ordering, I googled about size and learned when it comes to these kind of fittings size is never 'actual'. Fancy that, learned something new! Glad I found a manual and a parts list for this particular unit or I never would have known and probably ordered wrong size.
B**R
Good replacement part
Good replacement part for craftsman 2 hp 27 gal. Compressor.
C**S
Worked great
Compressor would stall and trip breaker on 2nd start ,I knew check valve was bad ...for 5 years..lol. All good now.
Trustpilot
2 months ago
2 months ago