Best Low Cost Water/Oil Filter for Yong Heng Compressors 

Got one of these compressors a filter like this a month ago, and was not sure how to set it all up. THANK YOU for this video. It is very educational and was fun to watch!

Husband and I just bought our Yong Heng . Thanks for helping square us away Sir .

filled mine with rice in the centre and sponges either side I’ve been doing it like this for 2 years now with no issues and have just got my dive bottle back from the testing factory with no issues it’s cheaper and works really well great video keep them coming 👌

Just discovered your videos. I'm an avid airgun enthusiast and recently purchased the same pump. I really appreciate what you're doing and the information you provide. Thank you!

Hello Aaron, thank you for the concise explanation. I recently decided to make the "plunge" into PCP's and decided on the Yong Heng compressor based on other reviews and maintenance information I found elsewhere. I just subscribed to your channel because you're easy to understand and you've obviously done your homework which saves people like me, time. It's not obvious to some that these high pressure air systems can be very hazardous if not properly utilized and maintained and these systems deserve lots of care and respect ! Keep up the great work and thank you for sharing your knowledge and experience.

Excellent thank you so much. I just bought my compressor two days ago and I have been looking for a video on this very subject. Very well explained and demonstrated. Blessings!

Hello Aaron, great video. Most large scale desiccant & molecular sieve dryer systems in industry have 2 vessels with pre and after chamber Flo filters. Most all have inlet water & oil separaters that somewhat limit dessicant bed contamination. The oil/water flows to a timed drain tank.They use dry air from the drying chamber to reverse flow the saturated vessel moisture to atmosphere to dry out the bed for the next cycle.. Of course this occurs at a much lower psi ie 100-120. I will order one of these dryers as you suggest and remove the dess and mol sieve and dry it out in the oven. Your the first RU-vidr to explain that if the drying chamber isn't allowed to dry, it is useless.

Love your American ingenuity , the way you make things you have around your house work for different situations do us all proud ! Thanks again Aaron .

I'm so thrilled to run across your channel. My target air rifle is the Hatsan Bullmaster in .22 caliber and want to get all the accessories and costs lined up before I invest. Currently using a break barrel rifle and really want semi action upgrade. This filter looks very useful and you sold me on the Yong Heng compressor. Thanks for all you do and still watching your vids. Homework always to come.

I saw this comment on Amazon from a guy using a similar filtering oil/water separator: "1 Year update: This is still working great. I have not had any issues and I'm still using the original media and cotton filter. In all honesty 95 to 99% of the moisture is trapped by the compressors mini cotton filter. I recently tore my Hatsan's tanks down to install regulators and while working on them I checked for moisture and there was ZERO. I even ran a tissue down the tube a few times and it came back perfectly dry." Also, you can remove the beads and desiccant and sun dry or oven dry them if they get damp, then re-use it.

I know I’m late to the party. Lol you made this three years ago I just want you to know you are very well spoken I’m about your age and us OG’s know how present ourselves.

These are great pumps ..Had mine for almost 2 years now . Not any problems.. Aaron if anyone is complaining about these pumps it is because they have some kind of interest in the American made 1200 dollar pumps. Believe it or not.. this Yong Heng pump is twice as fast at filling my tank than the 1200 dollar american made pump. I paid 303 dollars for my pump and just like yours has the two tubes going to a separator and mine also has automatic shut off I can set .. I do just like you do...set my pump to stop at 4200 or 4300 instead of the max 4500 I agree with your advice .. really good. THanks and YES these are great pumps.....

I have 2 of the chinese branded compressors as well as the air venturi model. As part of my filling routine i always purge my hoses for 10 to 20 seconds to allow any moisture or oil to be released prior to filling. Also i baby the compressors only allowing them to run for so many minutes and then giving them a decent amount of cool down time,especially with my small back up tank...and the large scuba tanks..well they get filled at the scuba shop(no point in making my smaller compressors work extra hard on larger volumes of air)....great video man!

Very nice review on that monocular sieve tube , that will keep your fill station air dry and your pcp airguns free of moisture and oil , my yong heng compressor has a moisture beading valve on the left side and the main pressure bleed valve on right , when filling your tank you can blead moisture as your compressor is running every 3 minutes , AWESOME VIDEO'S

As always another great review. I like your no BS reviews. Keep em comin.👍

I was unsure which compressor to buy because so many of them are ridiculously priced. Because of your videos I purchased this compressor. Thank you.

Thanks for your Help and all your advice

Thank you Sir Just purchased one and great information and explanation

I used a handpump for over 5 years with no water filter. I opened the gun today and no rust, water or dirt. I dont see why the compressor will have the problem.

Aaron I find what you cover to be extremely helpful and have not seen any one covering how to make PCP guns more affordable. Thanks for your help.

I have two in series. I left the factory inline cotton filter in place. Next I installed a moisture removal stage. It works by allowing moisture and oil to fall out of the air stream (gravity). It I installed before the dessicant stage. So before the compressed air even gets to the desiccated stage, most of the oil/water issue is resolved. Makes the desiccant stage last forever,

Thank you for your time and knowledge👍.

You're a good man!! 👍👍✌🇺🇸

Excellent video Aaron! With your presentation and content you have taken your videos to another level. Great job!

Great series on the compressor Aaron !! I'm gonna use your trick with the wet clothes on the tubing on my pump

Old video, but I see youare still active. I recently bought a molecular sieve, but I will be returning it. I have a condensation tower inline, that almost did it. The finishing touch was to add cooling to the vertical line going from the second stage head to the leaving line. I run a piece of 3/8 copper along the line, wrapped it with bare copper wire, and hooked it to my water loop. Just did my first test, the black filter like you have leaving my condensation tower was completely dry. I also use diester oil. The same thing they use for scuba tank compressors. Its expensive, but doesn't smell or carbon up the high side piston.

Thank you for your information about the Yong Heng Compressor.... I purchased one and added the additional molecular sieve protection as you suggested. Everything works great.... Again thank you

The Yong Heng can be bought on Amazon for $310.00 Thanks for an excellent review.

One of my favorite youtubers... just so straight forward and transparent. I literally feel like if I made a video it would be very similar. I'm not saying it would be the best but it's honest, no marketing BS, just how much can you get for your dollar, I LOVE IT! With that said, thank you again Aaron and I have the exact set up, just got this pump and filter, only have one PCP (heavily tuned) and currently shooting .22cal pellets one on top of another at 50fpe. no bs, I would love to show video, trow hammer tunes a kral real nice - it's not my credit - I've spent quite a few hours tuning and analyzing. anyway, off topic. thank you Aaron, love all your videos and I feel you on how much love this sport. I hope we can meet up and shoot someday. Stay with it my man, I'm always excited to see your videos come up

Hi Mr Aaron. You mentioned your urban in this video and I have one too love it. Love to see some more videos with you shooting yours. Thanks for your dedication to our sport.

I love you air compressors videos. I bought this to play paintball with others on private land. I’m not into PCP yet but I do enjoy your other videos and it has me interested in it

I use the same unit, one for air venturi compressor and one for my yong heng compressor. Works awesome!

just bought a dual stage filter I think its way over kill for air guns but I just bought some scuba gear with a "hand pump" included and a 1 liter bottle the scuba review guy said the air quality was bad so I already have a young hang compressor and a 6.8L carbon tank. thanks for the review if my air is bad Ill add another carbon filter BTW my guns that I have taken apart had not a drop of water or oil in the air tanks with just the little stock young hang filter. Thank you very good info

Nice video. YOU ARE ON THE RIGHT TRACK. I do have to mention however you need to do a little more homework. Molecular Sieve and Silica Gel are both in the Desiccant family. They both take water out of the air however they do it at different rates at different humidity levels. At 10% RH molecular sieve desiccant can adsorb 15% of it's own mass in moisture. At 10% RH silica gel only has the capacity to adsorb about 5% of its own mass in moisture. So you would need 3 times as much silica gel to adsorb the same amount of moisture as molecular sieve! At 70% RH silica gel has almost 50% more capacity than molecular sieve desiccant. Also at 40% RH both desiccants behave the same. So in short depending on what your starting RH is will determine which desiccant is better to use. My suggestion is since you do not plane to use the Activated Charcoal the add equal amounts of each. Check this site out it was very very helpful for me when I was learning the differences. I copy pasted a lot of the numbers. It was easier than typing. www.flowdry.com/news/2015/10/silica-gel-desiccant-versus-molecular-sieve-adsorbent-which-desiccant-is-best.ht ***** PS, I use the same system without the Activated Charcoal myself. It is fabulous. *****

It won’t produce enough water to spray out the barrel but just a pin drop of water or oil. Under high pressure is enough to blow out your seals. It can rip right through them.

Good info Aaron. i have the same thing and my Yong Heng is running Great. thank you for the video.

Great video, and I applaud you for looking into things as opposed to dismissing them. This is a real concern. Whether or not it ever manifests itself into a problem depends on a few things, but any time you are using compressed air for sensitive applications, filtering and moisture removal are almost always required. The best systems use air dryers that cool the air below the dew point to seperate te water from the air after any oil and contaminants have been removed by a micron filter. Carbon is also not a bad idea. Especially if you have chlorine tablets in your garage or something like that. High pressure in these metal tanks.

Fantastic video it’s taught me everything I needed to know,Thank you.

Thinking about a purchase of this unit. Thank you for the informative video. .

I repair air compressors for a leaving , and yes absolutley , a small amount of oil and water is in the tanks by nature ! But it wont hurt if the right measures are tooken !!!

Very good info dude, love watching your videos from over here in the UK

Use a silica ozone generator filter (Amazon $26.99) on the intake negative pressure side in conjunction with the tuxing filter on the pressurized side. It's tubular with blue pellets in it. Screw the screen filter on the intake side of that and it works great. Catches the moisture before it cycles through the pump.

Great video and very helpful I appreciate them , Keep up all of the great work I am glad to see you look into the deals and give an honest opinion on everything from the airguns to the accessories also .

Forget the expensive trash the filter supplied is ample to perform the task of soaking up any oil from the compressor. the air should be cleaned and dehumidified before it goes into the compressor.

Many people still use a hand pump to fill their guns, and most of those have no filtration at all (some do - but even my expensive FX 4-stage pump doesn't by default). Of course there's little chance of getting much oil in the system with a hand pump but water is always a concern. So using a Yong Heng (type) electric compressor together with a filter system has to be a better system than a hand pump for your guns and nobody is suggesting using a hand pump is a bad idea. Also, some sort of drying system on the input would help a great deal, it can be a large volume container of desiccant (it's not under pressure so easy to DIY a solution) and maybe a few Kg of self-indicating Silica Gel in a large plastic bag would do the job. Use large diameter (say. 1" ID) plastic tubing to connect to the input so there is little added resistance. It's something I'm going to investigate anyway, even if only half the water is removed that is still a significant reduction in the amount of water entering the machine in the first place. Lastly, first service you do on the machine just replace all the O-rings you can access with decent Viton seals, the supplied ones are rubbish, they will disintegrate and bits will be spread throughout the plumbing. Don't wait until that happens!

You are a very genuine man.

My Gun dealer told me to make sure that I put moisture trap with it not to ruin my gun he has seen guns rusted due to the moisture in the air from these compressive

Thats a good common sense point. If these really cause measurable amounts of water into he gun system, then you would see the results coming out the barrel.

Good info, very well explained

New to the PCP air guns thanks for the information it was really helpful

Deckent? You mean "Desiccant"?

Thank you for sharing that,very informative.

Nice video, you have explain things well good job. You mentioned a drain valve but didnt show that, hopefully you show that in another video

This is so helpful, Thank You So Much!

Many thanks Aaron, I appreciate your video’s a lot, very helpful, Matthijs

I have pretty much the same sieve, the only question I still have is a valve for the top with perhaps a gauge so that you know the sieve is up to pressure before you start filling your gun or tank. The urban is back on Amazon for 199 . Ordering mine now.

Very helpful video

PS The moisture removal unit inaopke of looks just like the desiccant stage on th outside. The inside is strictly mechanical in nature. Cost about $150.

NOW YOU'VE GOT IT! Looking at your earlier video, I can see we've both learned from others the importance to have a properly positioned multi-stage molecular sieve to help keep water and oil out of our tank and marker/gun. Go get 'em!

Thank You for the info and be Blessed!

Aaron thanks.....what do you think about the NEW double bucket standing filter......I would love for you to make a video review, thank you

Great job Aaron like I said in your other video you could also make a diy desiccant intake filter. I went a little over bored on my output side I bought a commercial grade filter from AOA the ones that the Daystate compressors use lol. I just don't want to gave the possibility to ruin my $2000 + air rifles.

Great informative video - thanks

The oil my compressor uses is silicon, I don't think it is flameble or explosive. Still, it may cause issues long term if it gets in the airgun.

Nice video! Which direction should the air flow? Charcoal 1st or last?

Ordered the same filter from AliExpress, I'll be using Activated Alumina as a desiccant as t seems like the best option.

Darn, I want to buy this, but can't find it. Joe doesn't sell it anymore?

Put one of the air filter/dryer that comes with the Yong Heng in line between carbon fiber tank and the gun also

I have had mine for 2 years not one problems

Thanks, I see theres a new seperator that has a bleed valve on the bottom

I have that machine. I have three sate filter like the one you have in box.. can you install another filter before the pump, to keep the water out of pump? Also great video.

Thank you for sharing this video.

Nice vid! It answered many questions. That system looks great. Hope you will show the final mounting on the Christmas tree stand. What a great solution. --- Also, do you see a need to place a similar water/moisture filter on the INLET side of the pump? I would think that stopping the moisture BEFORE it gets compressed may have added benefits...?? Would like to know what you think. Thanks again for the great vids.

Great vid, just one point, your inner from your vid is upside down. You show the carbon sitting against the foster end of the tube! That is the pump entry, should the pump entry not be against the cotton and the carbon last out? Thanks.

Nice vid!

You gotta keep adding to the compress it might do better just to buy A better compressor

i have been using my yong heng for 3 yrs,i had to send my pcp in for a leak i asked the airsmith about the air tube he said it had no evidence of moisture!

never used water separator . tank ball bearing valve and spring rusted out thus causing leaking on my tank (ninja)

What weight oil dose your unit run on? Synthetic? This was a great veiw thanks for all your efforts in capturing this for us all to see!🏁🙂✌

Curious question it's been around 5 years since you made this video after all that how do you feel about it now

Hi, good job with the video. I got one of this for me and some one asked me a very good question. How often do you have to change the "molecular sieve" and "dessicant" from the filter ? And under what conditions it must be changed ? Ty

Nice filter

I noticed that when he was talking about the activated charcoal, he used the term " Skin Diving ". He should have said scuba diving instead. Skin diving is also known as Free diving. It means you Dive while holding your breath. Scuba Diving, is when divers carry breathing air with them. With this being said. This apparatus is made to eliminate water or moisture/ and also to purify the air for Diving purposes. Drying and purifying this air before enters the Tank. So the Skin Diving term, used on this video was wrong. He can verify what i just wrote online. And see the difference from the two. ( scuba Diving and skin diving ). We are humans, so we learn something new everyday

thanks aaron great information!

Great info thanks for sharing.

great research . good advice .

Arron, Can you tell me if you had to replace the female foster fittings that came on the hose with the Yong Heng or also the one that came on the hose with the oil water diving filter? The female foster fittings will not fit on any of my air gun's male foster fittings or my fill station hoses. the female fitting will fit over the male, but the ring will not lock on. I tried replacing the fitting on both hoses with a new female foster, but the threads are a different size and I have no clue what size they might be. It's frustrating because I bought the compressor, gold filter, desiccant and everything else recommended, but now I can't fill anything because of these odd-ball foster fittings. I just figured I would ask in case you ran into the same issue. Thank you Aaron and thanks for all your videos.

Aaron, I watched this and got to wondering why no one has done a dessicant pre-filter on the intake air to the compressor. I went out and looked at my Harbor Freight regulator (which does a great job of removing moisture) and scratched my head. I haven't taken the cover off the compressor (haven't even run it yet), so I don't know what to expect inside. I'd like to hear your thoughts on this. I can see advantages to this such as not adding more high pressure connections as well as keeping the moisture out of the compressor and therefore the air bottle. Thank you.

about being vertical, wouldn't the water vapor be pushed out (up) by the sheer pressure? by using cotton type, I found that the inlet side is way wetter than the outlet side. I wonder if the sieves could make them dryer, maybe I'll use two types of those tuxing filters

Fill it with rice it works and it cheap good video

Charcoal absorbs oil

Great video,I’ve purchased this can you tell me does this have to build up pressure before it fills my rifle I have the nomad2 will it take a while until it starts to put out pressure? Thank you.

QUESTION on the order of filter stages: My air hose out of Yong Heng is always the first stage of filtration. Should I put in filters that remove the OIL first or do a mixture of OIL and WATER? My second stage is also a small 5" filter tube. I assume I should put this full of cotton and desiccant to go after the WATER. My third stage is a long black tube from Amazon with only cotton in it. I will replace that with half cotton and half coconut charcoal to go after WATER and ODOR. Would you suggest any other order for the 3 filters? I am also doing an input filter of desiccant to remove WATER before the pump begins compression. This is for a 0.5 L SPARE AIR tank for shallow diving. tjcooper

Thank you, excellent video Aaron, I have a similar system although it uses only fiber filter, my problem is that every time I use the compressor the filter cover tightens too much because of the high pressure that goes through the tube. Does the same thing happen to you?

Thank you. Be blessed.

Can you help me with a problem with my compressor? The high pressure relief disk burst at about 3000 psi and the rubber plug in the side of the pressure gauge blew away ( now lost somewhere in my garage). I replaced the burst disc but the pressure want go above 3000 psi and air is blowing out of the hole in the side of pressure gauge. Any thoughts/ suggestions?

great Video Thanks YOU said skin diving but you mean Scuba diving ?

thanks for the info

Aaron that's the exact same sieve that I am going to order for my F10 Shoebox, I plan on using mine with only the disiccant beads though because the air is already oil free.

Does all this carry over to hand pumping as well ? Because if you need all this for pumping up your PCP with a compressor without getting fluids in the pcp how are we supposed to use handpumps without having the same moisture worries? or are the moisture properties different with the smaller hand pumping style of filling your pcp?