








💨 Keep your air crisp, your tools sharp, and your projects flawless!
The LE LEMATEC AI303 Air Compressor Water Separator is a compact, heavy-duty inline moisture trap designed to remove oil and water from compressed air. Featuring 1/4-inch NPT fittings for easy installation, an aluminum body for durability, and a convenient drain valve, it ensures consistent, dry airflow ideal for pneumatic tools, HVLP spray guns, and airbrushes—perfect for professionals demanding reliable, high-quality performance in humid or moisture-prone environments.














| ASIN | B01N4FMOMU |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #42,953 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #88 in Air-Compressor Accessories |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,669) |
| Date First Available | December 19, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5.6 ounces |
| Item model number | AI303 |
| Manufacturer | Ubiquitous |
| Material | Aluminum, Stainless Steel |
| Part Number | AI-303 |
| Product Dimensions | 1.57 x 1.57 x 3.62 inches |
| Size | 1.6" x 1.6" x 3.6" |
| Special Features | air compressor inline filter, inline air filter for air compressor, paint gun filter |
G**Y
Works great and looks to be high quality and solid
I always use upstream oil-water filters but nonetheless I believe this did an awesome job on any that might have formed in the line as I did three panels in Texas humidity and no water issues
P**T
Easy to Use and No Clumps
An online video suggested we purchased this separator when we bought our sandblaster gun, seems that compressed air tends to be moisture rich. I never knew the air was that "moist" we just used it for cleaning vacuum filter housings and the sawdust cyclone in our shop. Using our sandblaster gun, I have to drain this about once an hour. This little device was easy to install, easy to drain and evidently, it works perfectly as we never have media clumping. Definitely glad we got it.
S**E
Good Filter. Great service.
The first filter worked well but there must have been a manufacturing defect because it blew apart after a few weeks. I run a 135 psi mcgraw compressor from harbor freight and the filter is rated to 150 psi. The air is very humid where i live and the filter kept a lot of water out of the line. I contacted the manufacturer and his first question was if anyone was hurt. Luckily no one was near the compressor. He proceeded to refund my money and overnighted a new filter to me. Great service!
J**K
Air filter
Works great
K**Y
Air Compressor Water Seperator
My husband bought this & he says it works for what he wanted it for.
M**E
Air tool water filter
Great company to buy from . Very nice filter for the money
O**E
Update .... One of two units are unusable.
Leak at point between air release button and body of unit. Both ordered at different times. First one appears to be great, installed with ease, no leaks and does a good job eliminating moisture. Second unit leaks to the point that it is unusable. Unfortunately the bad unit sat on my desk for too long, and wasn't returnable. I hope the company makes it right. Only 50% worked. Not satisfactory at all. UPDATE - I was contacted by the seller who will replace the defective unit. Changed from 2 stars to 4 stars due to sellers response. After install will update review if necessary. Exemplary Customer Service. The company was quick to make things right. Cannot say enough for them. Used on two compressors. Both units in a 1800 sq ft shop, 1 upstairs and 1 downstairs. Both work just fine. If your looking to keep your airtools and plasma cutter running smooth, keep your air clean. These do the job Thank You
D**I
Works for a few days
I wanted to give this 5 stars at first. I used it for a week painting a car frame. Fantastic! Kept the water out of the paint. I didn't use it for a couple of weeks and tried to use it again and there is very little air flow. I've taken it apart, cleaned everything and still nothing. If you need it for one use, it's ok. Long term, No. Unfortunately I work for someone who won't invest in quality water mitigation, so I have to come up with my own solutions. This isn't it
た**う
15年前に取り付けたものがエアー漏れするようになったので交換しようと思い検索していたらアマゾンにあった。 安くは無い商品だが、ほかの店には無いし、安心して使えるので◯。
A**.
Macht was es soll. Verarbeitung super
M**D
The product is totally amazing and works even better than described, highly I would recommend for all, a must have industrial product. Made in Taiwan the quality is amazing. Do not miss out on this in line filter from le matec.
G**A
buena relacion valor precio
I**A
Tudo ok.
Trustpilot
1 week ago
2 weeks ago