Yong Heng compressor?

Here is my standard post to all things Yong Heng hope it is helpful.

The Yong Heng "Simple" version least expensive does not have a water separator you need one.

The "Auto Stop" version shuts off near 3000psi. Probly not a good thing for most people.

So you likely want the "Hardcover" or "Set Pressure" versions your choice on the 110V or 220V.

https://www.aliexpress.com/item/32824234795.html?spm=a2g0o.store_home.productList_13760454.subject_2

Keep them cool, the oil topped off, with ISO 46 or equivalent, to the red circle in the sight glass, and don't fill past their spec which I think is 4350psi, a little less is better than the max, and the Yong Heng should last for years unless you get a bad one. I did my first oil change at about an hour, it was very dark colored, far longer, between changes, after that.

I have two YH compressors. Bought the second as a backup for the first as I fergot to turn on the coolant pump several times and overheated it until it smoked. It did not like it but it still runs fine. Still I did not trust it after that. I added a switched outlet, to the system, so it turns the pump on before the compressor will power up to keep me from doing that from now on.

The second one, my back up unit, died in about two months bad QC from the factory. Cost me a $12, for a new second stage piston, and an hour to repair it. Then to add insult to injury I fergot to put the oil in, the latest unit, after I put it back together and ran it for a couple of minutes without any oil. Somehow it still runs fine. The #1 unit that I was worried about, cuz I overheated it so many times, just kept on filling my guns and tanks till I got #2 repaired and retired it.

I do not fill past 4200psi as when I do, all too often, I blow a burst disc. This does not happen on the first or second fill but soon thereafter.

The temperature sensor only measures head temperature so running it much over 20-30 minutes can overheat the motor and other parts even if ice is used in the coolant. Ice or a container of it, in the coolant, is a good idea especially if you are like me and do not use the full five gallons of water as suggested in the manual.

Keep your water supply level with the compressor to be kind to the pump and assure a good supply of coolant goes through the compressor.

I recently started using this Red Line water treatment after I noticed algae growth in my 2.5 gallon water bucket every few months. It seems to have stopped the algae growth problem.

https://www.autozone.com/antifreeze-radiator-additives-and-windshield-wash-fluid/coolant-water-wetter-additive/red-line-water-wetter-super-coolant-12oz/486218_0_0

Keep your moisture filters, guns and tanks being filled above the compressor to help keep the moisture out.

Purge the system of moisture, using the screw valves on both sides of the compressor, for a couple of seconds every five minutes while in use.

Change out your small YH filter every twenty minutes and set the old one out to dry and use later.

Add a better filter if needed to be sure more moisture and any oil smell is removed from the system. Many of us use this Tuxing three media filter although, if you feel the need, you can change media types at any time.

https://www.aliexpress.com/item/32891898253.html

A smaller one will probly do for many.

https://www.aliexpress.com/item/4000960926898.html?spm=a2g0s.9042311.0.0.2a034c4dL0nrJU.

Bleed the pressure before you turn the unit off and let it run a few seconds to get the better part of the moisture out of the system. I have found that I blow less burst discs if I bleed before shutting down so I do this religiously.

Let the coolant pump run for a few minutes after shutdown to cool things off.



Here is a video on how to fill a SCBA tank.



https://www.youtube.com/watch?time_continue=157&v=_grx5p_R8D4&feature=emb_title




 
Thinking about getting a compressor. Walmart has the Yong Heng for $269 and a 4 year warranty for $45. Is this a decent price for this compressor?

?I don’t see it as getting a ton of use and wonder if the extended warranty is worth the extra money. Also what oil and add on air filter is recommended or has worked for you? 

This topic was modified 1 week ago by Alderman 

Get the warranty. Just today I had to deal with Walmart. My brand new yong heng failed after four hours of babied run time. To make a long story short, Walmart is refunding my money and told me to keep the Yong Heng which I can repair for 22.00.
 
I am new to the PCP air rifles and i am wondering what is the best shut off temp on the Yong Heng. I hate the C temp gauge but if I know when to shut down for a cool off when filling my bottle, I can live with it.

Keep in in the low 50's and you`you all be fine. Just add a frozen gallon milk jug in your water bucket and keep run time to about 15 minutes. Keep your arms away from the silver air tubes when turning on and off the bleed valves. My arms have burn stripes, these get scorching hot in just a few seconds.
 
I am new to the PCP air rifles and i am wondering what is the best shut off temp on the Yong Heng. I hate the C temp gauge but if I know when to shut down for a cool off when filling my bottle, I can live with it.

Keep in in the low 50's and you`you all be fine. Just add a frozen gallon milk jug in your water bucket and keep run time to about 15 minutes. Keep your arms away from the silver air tubes when turning on and off the bleed valves. My arms have burn stripes, these get scorching hot in just a few seconds.

And that is why an external fan blowing across those tubes helps temperature a lot. A good ducted fan blowing across the heads will lower operating temp noticeably. I use such a fan in addition to crushed ice in my water, which I have found to cool better than larger blocks. More trouble with crushed but not much-I drain off water and add more ice as needed.