VEVOR Vacuum Chamber with Pump, 4CFM 1/3HP Vacuum Pump with High-Capacity 2 Gallon Vacuum Chamber, Vacuum Pump Chamber Kit Vacuum Degassing Chamber Kit

This does just what it's supposed to do. The short version is that It's large, inexpensive, and works. It works great whether you're degassing epoxy for resin pours, or just letting your kids watch what happens to marshmallows in a vacuum chamber! Assembling it is pretty easy, you just screw in the air manifold, and attach the hose with clamps. The instructions on adding the oil are a little weird, but if you just follow the procedure, you'll get there just fine. The pump is a little noisy, but really not bad considering the power behind it. Leakage is minimal, certainly not enough for me to notice without leaving it for extended time. The pump takes mine down to 0.15-0.2 BAR, depending on what I've got inside of it, temperature, etc.. It also works quite quickly, and gets down to that level in around half a minute.

I poured in too much oil. The drain plug performed better than expected, no mess at all. I attached everything. They DID NOT include the instructions about the gasket seal for the steel tub, I am not sure your supposed to use it. I did. I fired it up and after a very quiet few minutes it reached 30 on the gauge. I closed the valve and put the pump away. Twenty four hours later it has dropped to 29 on the gauge. That is more than enough time for anything to cure. It works, as advertised, but for how long? Okay! SO I have had the chamber under vacuum for three days now. The gauge has dropped on one Hg in the first 24 hours and then stopped at 29Hg. I am calling top notch on the chamber. The pump is my concern. It took two thirds of a bottle to fill the pump. I pumped it down to 30Hg and the oil was at low level. That will be covered by the last 1/3 of the bottle. That's a lot of oil if I do 10 draws a week. Update: Day 14 - Chamber is at 28Hg. I am calling it good.

My vacuum pump works fine. A little slow but gets the job done. It does emit a fog of oil from the exhaust of the pump. Just to set the record straight, I have used lots of vacuum pumps, as a mechanic. They all emit a fog of oil from the pumps. Even my $2600 lab pump, does it. Ok, on to the vacuum pot. The pot is fine. The lid is a place of potential fast failure. It seals with a very soft and STICKY silicone gasket. If you don’t keep it clean. It will stop sealing. EVERYTHING sticks to the seal. This belongs in a clean room, not a shop. The lid weighs a good bit, there are not latches or any mechanical means to “tighten” the lid down. It depends on gravity and a very clean seal. Mine works, it does hold a vacuum, I suspect that dirt will eventually end up in the seal, and then it will be useless. Be warned, keep it immaculate.

Easy setup and holding vacuum after 8 hours of test run. Dumped included bottle of oil to fill the pump before turning on, nice and quiet, some misting of oil but quickly disappeared. I was lucky and scored a open box for 2/3s the price,everything was new and unused. I'm going to use this for car oil changes through the district, youtube. Update: beginners mistake, don't open black valve under vacuum, it will suck all the oil out of the pump, clean up on aile six.

Works perfectly and is very powerful and quiet. Pulled a deep test vacuum in the vacuum pot and it has remained at the same vacuum pressure for over a week now. Zero leaks.

Only JUST got the product working, no thanks to the documentation or customer service. I have not directly operated a vacuum pump before, nor ever worked with any kind of small engine other than replacing oil in a WELL DOCUMENTED place - but I have a strong engineering background in other fields. Box supplied 2 bottles of oil and documentation did show where the oil LEVEL was, but didn't tell you that it would need both bottles, nor WHERE TO PUT the oil. The cap labeled "Oil" was not obvious whether it was for adding oil, checking its quality etc. INCREDIBLY sparse documentation wouldn't say. I added a full bottle under the oil cap and the level indicator did not move. I Sent question to seller who wanted pictures (which is to say, didn't even at the question itself), and wanted to upload them through a third party. Web searches were fruitless as well. The closest I got was for a Vevor GAS vacuum pump with approximately the same form factor and seemed to have the oil intake in the same place. I added the second bottle to that place 80% sure it was the right place, and the oil line on the level system did indeed rise to the obvious level. I would certainly be returning the product if that had turned out to be the wrong place. The pictures of how to lay out the piping and valves were not clear, but I guess they provided something. Certainly they were keeping their language translation to a minimum. When I operated the pump for less than 10 seconds, the top of (what I now understand was) the air outtake popped off, along with the underlying air filter. I put the top back on but removed what was presumably a shipping cap and things seemed to work better except the air filter had popped out and I didn't see it. Not only was the air coming out smelly, the pump was overly loud. I saw the filter, put it back in, and it is now reasonably quiet and nowhere near as smelly. But now the inside of the oil indicator is covered with some kind of white particulate or bubbles making it unreadable. I am hoping that just letting the pump sit unused for a few hours will clear that up. I also had to figure out the valves on the piping to actually get a vacuum in the chamber. This was done more by "This must be so you can" and "there must be a way to" than finding useful information in the documentation. Good documentation written once prevents a lot of subsequent labor costs with customer service interaction. Companies should now that by now. If customer service is slow or cumbersome, buyers will be unhappy with the product, even if the product itself is not expensive and (eventually) works perfectly. I have not had enough run-time on it to even know if it works perfectly, as I am sitting here waiting to see if the oil level indicator ever becomes useful.

This vacuum chamber works great for getting rid of bubbles. It's easy to set up and easy to use. I love that it comes with the vacuum pump and the price is very reasonable.

The product came very well packaged. Everything in the box was properly bubble wrapped and all the parts looks like they're of good quality... Except for the cover seals. They're made of silicone and are quite small compared to the washers that came with it. The first thing I did was test the system with the provided seals. The vacuum chamber lost the air immediately. I removed the silicone / rubber seals provided and applied some silicone to the top side and the bottom side of the cover and re-tested the system. Great results. The vacuum stayed and did not drop. The cover is about 7/8 of an inch thick with an orange rubber seal around it. There was also a rubber seal provided for the vacuum chamber. Together, these two work very well. The bond is very strong between them and even if the instructions said to apply come pressure to initially start the vacuum, there was no need to do so with these seals. The pump seems average with regards to the look and feel of the build but it works well and reaches maximum vacuum pressure within a few seconds. The box came with sufficient oil to fill the pump to the maximum oil level. If you're not a technical person and expect to put this together and have it work immediately, then this one is not for you. However with a little brain work, you will find that the solution to getting this device to work is quite easy. I left a picture of the product I used to seal the cover. The link to the product is below. https://amzn.to/3Jn3rNI