Instruction: Answer the given question using the supporting document.

Input:
Question: I'm looking for container with a plunger inside to evacuate the air.  Does this do that?  I
Document: At first I thought a coffee scoop was included, since the latch on the photo appears to be a scoop. It's not, but I'm enjoying my coffee vault regardless. It holds at least two bags of ground coffee or unground beans, stainless steel inside and out and I love the air-tight feature as well as the daily counter on top, which provides a visual reminder of freshness.
This Coffee container comes just as advertised. It simple and work extremely well. I go through a pound of beans a week so it's the perfect size to keep my beans fresh. For the price, I'm not sure you can beat it. The best recommendation I could give it is to say that I would buy it again, if given the choice. It works well and houses your beans in an air tight container. That's all you need to know.
This coffee canister works very well and keeps my (ground) coffee fresh. I'm not a coffee connoisseur, but I do buy freshly ground coffee about every other week. I was looking for a container that would keep my coffee smelling and tasting fresh, and this canister does the job. I recommend it.
Sure they give you some free valves but once you convince yourself they're a necessity, you'll come back to buy some. Incidentally, if the beans do generate CO2, the CO2 will eventually push all of the air out of the container leaving 100% CO2 in the container. This kind of conflicts with their advertising doesn't it? BTW, I'm a retired power plant engineer and very familiar with CO2, filters and valves.
The canister is fairly thin stainless steel bucket, which is not very &#34;vault&#34; - like. There is no thermal barrier, and when it first arrived, I had to scrub the inside vigorously to clean it out and get rid of the machine-oil smell. In short, it's similar to other sealing gasket containers that I  already had, and I'm not convinced the valve device makes that much difference.
The canister itself is very nice looking with a brushed stainless steel finish and a black top. I am very picky about countertop "clutter." I used to keep my coffee inside a cabinet. Now, I often leave this out on the counter, because it is really attractive. While it's a little bit of hyperbole to call this a "vault," It has a rubberized seal around the rim, and it closes very tightly. You can hear a little "whoosh" when you open it.
Great keeps coffee fresh * we buy smaller bags so we just put entire bag inside. keeps counter neat & clean ^ matches our stainless steel appliances so can keep on counter air sealed tight.
I'm sure it handles some CO2 but not in any quantity to make a difference. The downside of this filter is that it does not provide an air-tight seal which is what is most widely recommended. I go through coffee fairly quickly and so I'm not too worried about this. The can does hold 1 pound of coffee beans with some room to spare. So far the latching mechanism works well.
This is a pretty way to store your coffee. I'm sure it vents the C02 as advertised, however, if you open it everyday like I do, then you will take out coffee and add more and more air every time you brew. Unlike a bag of coffee, you can't compress the air out of this unit, so, as a result your coffee will taste stale after 10-14 days.
I hate to rain on anyone's parade BUT I received one of these as a Christmas present and was suspicious the moment I saw the descriptions on the outside of the box. These guys confuse filters and valves. Looking deeper into the information, it appears what they present is the same valve that is on most premium coffee bags. It lets gas (air, including CO2) go out of the bag but not back into the bag. There is no reason this valve should not last a long, long time.
Answer: No plunger. It has a freshness valve in the lid that is replaced approximately every two months. Works perfect for me.