FIRSTINFO A1638 (3rd Gen) Patented Lightweight Max. Pressure 140psi / 620ml Thickened Aluminum Canister Refillable Aerosol Spray Can | Compressed Air Sprayer | Wide Mist Spray

I like this sprayer, I use it with Wd-40 and Ive never had a problem with leaking or losing pressure. I only pump it up to about 15psi. No need to go more and get at least half the liquid used per pressurizing it.

Awesome refillable bottle. Cheapest way to use wd-40. Buy a gallon and fill this as need.

Great product if it worked. Bought 4 cans. Each worked only once. O-rings are not rated for solvents. They swell and clog the sprayer. Looked great and would be a great product. Need better orings to make it work. Having a hard time finding the tiny sized o rings.

hair line crack in air filler part after 7months , the top needs to be metal too worked great for my WD 40 but wont hold air now. but they were quik to respond to me and sending out a replacement top

Quality built product. I'm now ready to get a few more of these. Extremely happy after ordering an Obvious Chinese knockoff. Buy a couple you won't regret it. You'll need an air source to pressurize . Not all the time, but depending on use, then you may need to recharge along the way

Easy to refill and sturdy. Will recommend to any mechanic.

This is one of the tools you don't think you really need. Turns out it's a real money saver. And works way better than an aerosol can. Use it for Kroil penetrant. This stuff is pretty good. Much better than WD40 but is obscenely priced in aerosol cans. Purchase in gallon container greatly reduces the price. Still expensive, but it helps. This device works perfectly. A little tricky to fill but charges instantly and super easy to use. One quick air blast to charge lasts a long time. Great range for hard-to-reach items. Easy to control for close up items. Update 4/10/2026 Had to replace o rings in valve. Kroil swells them and no longer shuts off. Use Thiokol.

First i would like to say I am satisfied with the overall quality of the product. Sometimes I do have problems getting it aligned and filled right, but I think this is do to the filling device ie my tire inflator and NOT the unit itself. I use this in my machine shop and I am extremely happy. I use it for WD-40 Applications. Mostly to lubricate aluminum parts while machining on the lathe. I previously used to buy the aerosol spray can made by WD-40. No more wasted cans! Also, sometimes the aerosol cans would lose enough pressure that even though I can shake the can and notice that there is still some significant amount of product left over, but nothing would come out...total loss of pressure. I like the fact that I can add pressure to my refillable unit any time I want. This being said so far I have not lost any pressure in this product (meaning it has not leaked yet). If you fill the unit with more liquid than you only have so much you can fill the rest with pressure from the compressed air. or Vice versa, you can have very little liquid and more volume of compressed air. I can see how some people have issues with it not giving enough pressure that they desire. Just try filling less liquid and more volume of pressurized air....it might help. For me I am totally satisfied with unit and recommend it to anyone and who understands the way it works. I do not recommend it for using as a dry air unit (blowing only air and no filler liquid) although i found it to work perfectly okay in this situation just remember its compressed air and not co2 based or something like that.

I used this for spraying ant killer (borax and sugar) into little cracks and it does this well. At full pressure a stream of water will reach 5 metres. So this could be used for self defence purposes by filling with capsicum spray. My wife will use it to spray aphids on fruit trees as it is so much easier just to press a trigger than keep pumping away with alternate sprayers.. One gets the impression that the nozzle mechanism a bit flimsy, but so far (2 days) it has functioned well and it retains its pressure. I am pleased with the can but wish I had bought the larger one as the usable liquid (500ml) gets used quickly. It is very easy to charge with air. I checked the safety mechansim and at 140 psi it works. It was delivered on time by Amazon.

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Ever have a spray can that runs out of juice but is still half full ... not anymore. Put anything you want in it ... spray gas into a carb, yup. WD 40 and no straw, yup ... instantly go from general spray to precise spot spray, yup. Weak spray, lower the trapped air pressure, squirt across the room? yup no problem. handiest can you've got in the garage.

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