Anyone know what would be a maximum humidity level to fill a pcp rifle without having to use a expensive filter and just a small cotton filter and still not have water collect in the air reservoir? I was thinking of making a small incloser with enough room for a small dehumidifier, rifle and a small compressor just trying to not buy the expensive filter. I know zero would be ideal but just curious?
Acceptable Air humidity percentage for filling pcp
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A small enclosure will not werq well as the compressor requires a lot of cu ft of air. You would be wasting your money trying to do that. If you purge your compressor every <5 minutes and are using the smallish Yong Heng filter or equivalent you can just change the filter out after twenty minutes, let the used one dry out and reuse it several times to keep the expense down. I do these two things and have a Tuxing filter, installed after the Yong Heng filter, it has lasted over a year. So it's not acquiring much in the way of water, with my twenty-thirty minutes a week usage and it is still in good shape. I run the Yong Heng at 60% humidity in my basement.
https://www.aliexpress.com/item/32891898253.html
https://www.aliexpress.com/item/32891898253.html
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You can get things like this that are relatively cheap and work great. A bit of shopping around can find cheaper. Ebay.com from Canada so disregard shipping costs just giving you an idea. Use cotton as stoppers on each end and fill it with the desiccant beads. 1lb will last a decade I bet. Change it out every now and then as needed.
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Makes sense I just got a Hatsan spark clone on ebay for $250 it doesn't have the hookup for car battery connection I also recently got the Hatsan Flashpup wood version .25 cal and want to make sure I take good care of it. I had a cheap Xisco Sentry and had nothing but issues with it just a nightmare with o rings etc.... The flashpup has performed beyond my expectations with power and accuracy right out of the box. I was shooting small apples on a tree about the size of a ping pong ball at about 30 yards away with H&N Crow Magnums and they were just exploding on impact so much fun! Thanks for the info
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Crab apples. Oh my goodness my mother used to pickle crab apples in pint and quart jars. Country boys know. And home canned seckel pears .Taste like honey fruit.
I like shooting the balls off buttonwood trees (sycamore). Puff of fuzz. Shooting off hand.
Does the condensed water even do anything to buddy bottle guns?
I like shooting the balls off buttonwood trees (sycamore). Puff of fuzz. Shooting off hand.
Does the condensed water even do anything to buddy bottle guns?
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A Litle offtopic, but I do not believe the filters are supposed to be positioned horisontaly, like on the picture. Undrained waters would make the filter vet. It has to be positioned vertikal, with the drain at the bottom.
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I would disagree on a dehumidifier, if you reduce the humidity of input air in a room where you have the compressor you will reduce the input water. As far as the large amount of air a 100 cf bottle has a 10ft by 10ft. Area 1ft deep a 10ft by 10ft by 7ft room has 700 cf of air. I don't think I would purchase one but if I already have one I would use it. Then again I would read the specs on the dehumidifier to see how efficient this would be, just might be a better option than one would think.
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I connected a pre-filter (aquarium reactor filled with silica gel beads) and I shot down the compressor when reaches 55C. A small cotton filter only inline to the tank. Worked great over summer time (and in the basement) when the AC was running full blast, will see what else tricks I will use over winter when the humidifier will be on.
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I connected a pre-filter (aquarium reactor filled with silica gel beads) and I shot down the compressor when reaches 55C. A small cotton filter only inline to the tank. Worked great over summer time (and in the basement) when the AC was running full blast, will see what else tricks I will use over winter when the humidifier will be on.
You're only using cotton on the output?
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I agree with lenweber2, what you put in comes out, and it has to be a very small room for the air not be enough.
I run two dehumidifiers in a small room like 10x10 feet, I can get down to 30% in like 1-2 hours, that from 50-60% before.
I also run two in line filters in series before filling my tube or gun.
I run two dehumidifiers in a small room like 10x10 feet, I can get down to 30% in like 1-2 hours, that from 50-60% before.
I also run two in line filters in series before filling my tube or gun.
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@bigHUN, I have also thought of connecting a PRE filter, the problem I think with that compared to a filter on the highpressure side is you will just filter water, the high pressure filters also remove oil and other bad stuff not belonging in a pcp or tank
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Also, no matter how dry the air coming into the compressor is the fact that you're compressing air creates/accumulates moisture. The important side is the output.
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I have 3 Fireman's CF tanks and filling up to 4400 psi each. Last time I checked one bottle (months ago) flipping it downward, even a longer hiss didn't had any moisture-smoke. Again the AC was running a whole day and I was filling the tanks in the basement, I am monitoring closely the temperatures and I never let the compressor heat up to 55C, it is running for a minute I shot it down for 2-3 to cool down...one Temp probe (upper screen) is on the compressor cylinder head and the second (lower screen) is on the output line. The original YH is measuring the manifold temp.
Yes Glem, so far I was using only cotton on output side (you recognize the black filter body) but I am checking and replacing regularly (even during fillup), last time I bought a big bag of those. Looks like the prefilter about a half Liter size is/was working well.
Since my last refill I got one of those (like the yellow one couple posts above) filters from a classifieds (it is about a 3x the length size I had before) but did not try it yet, open it up and some white granules mixed with black=carbon I believe.
Probably this week I will need to top up two of the tanks, I will need to re-arange the fittings to accommodate the "new" larger output filter.
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Compressing air does not make moisture, it's already there(in the air) but you are taking the water in that 100CF and putting it in a couple of CF. Couple of things one can play with, with little or no expense is to put a downward loop in the input or out put hose and ice the bottom of the loop. Water moisture will condense at the bottom of the loop.
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Thats why I said /accumulates, but agreed it doesn't create it haha. More concentrates I suppose. I recommend getting some dessicant there Bighun. Your guns are worth it.
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Glem.Chally is right. You need a water trap/filter on the output side. It impractical to remove enough moisture on the input side to stop condensation on the output side. Here is an example showing why this is so.
Suppose you have a room with a lung scorching 10% RH (relative humidity). Compress that air 10 times, ie to 10 bar, you now have 100% humidity. Now if you are filling a tank to 300 bar, you have 3000% humidity, which is impossible, so all the spare moisture will have condensed into water.
The easiest way to get air at less than 100% RH into your gun is to fill it from a tank. For example if you have a tank at 300bar and 100% RH and you fill your gun to 250 bar;
100 * 250/300 = 83% RH, which means there should be no liquid water in your gun.
Suppose you have a room with a lung scorching 10% RH (relative humidity). Compress that air 10 times, ie to 10 bar, you now have 100% humidity. Now if you are filling a tank to 300 bar, you have 3000% humidity, which is impossible, so all the spare moisture will have condensed into water.
The easiest way to get air at less than 100% RH into your gun is to fill it from a tank. For example if you have a tank at 300bar and 100% RH and you fill your gun to 250 bar;
100 * 250/300 = 83% RH, which means there should be no liquid water in your gun.
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Yes, you are all right about, but at that time I've got all the equipment within a very short period of time (I have to admit all those were not planned for) and it was just a bigger pile of money blown away, I could not afford to buy a couple hundred $ moisture extractor, so I learned working with the compressor very carefully.
When I assembled all the tanks very first time I toke out the little tube from the valve.
so when I am checking/draining the tank upside down if any liquid inside the air will or shall spray it out. So far never saw any mist spray in about 3 hours of compressor running time. Also, I am filling my gun from a tank that is vertical-upright and if any liquid cannot reach to the valve.
I have now a new high pressure filter I will mount it next time working with top ups.
When I assembled all the tanks very first time I toke out the little tube from the valve.
so when I am checking/draining the tank upside down if any liquid inside the air will or shall spray it out. So far never saw any mist spray in about 3 hours of compressor running time. Also, I am filling my gun from a tank that is vertical-upright and if any liquid cannot reach to the valve.
I have now a new high pressure filter I will mount it next time working with top ups.
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Okay winter is coming up. I have access to a garage with indifferent air (random) according to the season. I can also fill up in my trailer(artificially heated and dehumidified). Or I can fill up outside in the cold. Given a filter (or two, or whatever, I have three by now), is any of those an environment recommended/not recommended for filling my tank and/or air rifle? My natural assumption is an indoor setting at usual human temps, but I may not have it.
Would my Yong Heng be toxic indoors, or effectively unusuable outdoors in, say, 50 degrees?
Would my Yong Heng be toxic indoors, or effectively unusuable outdoors in, say, 50 degrees?
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The YH (or any other electrical powered compressor) doesn't create exhaust gasses, only smell you may detect is from any manufacturers oil not cleaned up properly from the exterior body and the warming-up compressor parts start releasing/evaporating that oil. Clean it first as much possible. Even if you buy a new coffee maker and use it first couple times will make you some smell in the room. Second and most important, don't run it long to heat up extremely, shot it off to cool down, I am not letting my YH to heat up 50-55C....takes some time to fill a totally empty tank, but for a top up only is not bad running it for a minute and pause for 2-3 and repeat.
The second part of your question is, a cold air is more dense then a hot air, filling a tank over winter in cold you get more air volume also faster then over summer during hot days (Canada here, the temp is swinging easily 40C (in a shade) in summer and minus 40C over winter).
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It is a very good thing you did removing those small tubes under the valve in your tanks, I dont have them as my tanks are "air gun tanks", this way you can "degass" your tank upside down from any potenial water build up in time. Most importnant is to have your tanks ckecked after a year or two.... A very good insurance, but it seems you have control of the situation, thats good
.....I always put safety first, no matter what, even if it takes time and money..
Recently Ive ckecked 5 or 6 pcp guns, taking apart the airtubes and inspected them visually first then exchanged all orings, feels good after even if sometimes takes time and some frustration
...Tomorrow I will top up my tank its down to 210 bar now,,,
Keep up, safety first..
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