Orion Motor Tech AC Manifold Gauge Set for R12 R22 R502 R134a Refrigerant, 3 Way Automotive AC Gauge Set with Antishock Gauges Hoses Couplers & Adapter, Puncturing Can Tap Freon Recharge Kit for HVAC

I am not an A/C expert or even experienced in A/C systems diagnosis and recharging. The gauges were easy to assemble and use. The gauges are in Celsius as others have commented. The gauges come with everything needed for R-134a systems except the can tap, and the kit included an adapter to go from gauge set to the can tap that I purchased seperately (I purchased my R-134a can tap locally, but it is similar to the taps offered on Amazon by WINOMO or the Interdynamics DV-134). The gauge hose fit to the low side of an R-12 system with the R-134a quick coupler removed, but would require an adapter for the high side which I did not need or look into as I was only using it to fill one can into an old truck. I bought a Robinair 10102 side can tap for the R-12 can which worked well and had two different sized fittings, one of which was sized tor the gauges yellow hose which just screwed on and the other fitting on the Robinair side can tap accepts the adapter included in this kit if you wanted to do that for no reason and then screw the yellow hose to the adapter. So for R-12 system the gauges hose connections for the yellow and blue hoses screwed directly on the can tap fitting and the low side fitting in the vehicle. For the R-134a system the provided quick couplers in the kit fit on the high and low connections at the vehicle and the provided adapter in the kit fit to the can tap. The gauges worked properly for the two vehicles that I worked on today and altogether the quality appears to be average or acceptable. With this OrionMotorTech gauge set you can accurately see what is going on for an R-134a system (not for R-12 without the additional purchase of a high side adapter). These gauges are MUCH better for filling R-134a system than the R-134a refrigerant can with a one piece cheap gauge and short hose that is sold to fill systems. Those have always been frustratingly inaccurate in my experience and I think that they are worthless. As far as knowing what you are doing for the diagnosis and fill, accurate information on checking/filling and gauge pressure readings on the internet is not easily found, but this helped me: vehicleairconservices /page/gauge_readings . Start with the vehicle on and A/C off and use the associated pressure chart, I believe that this checks the system overall fill pressure and if it is low overall, probably needs a recharge. Then turn A/C on max with windows down and run vehicle to normal operating temp and use the A/C on chart. There is also some basic diagnosis info included. Use all of this information at your own risk. I’m not an expert as already stated, very much a novice on A/C systems, but I am a graduate level backyard mechanic. Good value for the money in my opinion.

My evaporator core sprung a leak and after getting a couple of quotes, I decided a DIY fix was in order. This manifold gauge set wasn't my first choice, the other was sold out, but in hindsight this set has 1 ft longer hoses which made the AC work much easier. I had no trouble putting it together or hooking it up, the high side slid right on without any struggle. Seals were all good and I was able to successfully vacuum test my work for 12 hours without any leakage in the system or the gauges/hoses. Recharging the system was a breeze with the can tap adapter (not included!) and I felt much better doing the recharge with the gauges versus the prior work I've done with a single low side can tap and gauge. The high side connector did indeed stick after running the system for 30 minutes while I recharged the system and the root cause is very clearly thermal expansion. If I hook up the system when the system and car are cool, it pops right off without issue. Once the car and the system heat up, the connector and hoses heat up and then it becomes more difficult. In my case, I waited 5 minutes and the quick connect released without much fuss. I'm sure there is an engineering solution to this problem, but for the price I'm ok with waiting a few minutes. It gave me an excuse to have a beer and celebrate a successful AC repair!

Trying to determine AC cooling issues without one of these hoses is nearly impossible. I noticed the mixed reviews but I took a chance. The hoses worked as intended and Confirmed that my ac is low on refrigerant. I was worried about the high pressure quick connector getting stuck. When I tried to get it off, using one hand it was very difficult. The trick is use both hands - one to pull down on the red collar but the second hand grabbing below the collar and push the hose upwards. This pull and push action will give you leverage and the collar will come off. The reason that it gets stuck is due to the high pressure. It is not a defective hose. The instructions were basic with no real details on how to connect the hoses. I wish they included that. I had to look up some how to videos and figured it out myself. I also wish they charged a bit more and included the adapter for the yellow hose. They did mention not included in the description though. I was able to charge my ac using another old low pressure hose that I had connected to a r134 can already. Overall, these hoses are a cheap investment and they served its purpose. I am a diy not a pro mechanic. So I do not plan on using these all the time.

Used these gauges to recharge my HVAC unit with R-22 Freon refrigerant. Everything was in kit and no issues encountered. The needle for the low side blue gauge was just a tiny bit off from idle atmospheric reading not at 0 but not a big deal as you can adjust by taking the clear face cover off and gently turning the flathead adjuster. I didn’t try and just made note of it. Nice for a DIY and not as a professional.

As a mechanical engineer in the HVAC field I figured for the price why not put these to the test and see how they hold up. I can tell you I ran these things hard all day, and on more than just r22 and 134a. I tested with a tee and my testo manifold, the gauges are accurate but *** in Celsius*** when I ordered these I was high and wasn't paying attention. Regardless the gauges themselves are all that withstood a month of service in an actual HVAC field. I'll begin with the hoses... At first for cheap as dirt they performed well even operating over 300psi. but after a week or so the gaskets which are rubber not sure why.... Were destroyed. Not able to pull a vacuum at all. The manifold is okay but the sight glass got foggy after a few uses and I was never able to get it completely clean. I'd find myself laughing as the low and high side handles repeatedly broke off in my hand. Super long story short for $20, you'll get a few uses then you can simply trash them. So if you want a disposable set I'd suggest these since they're so cheap if you simply are a diyer that wants to charge your cars ac, and won't mind them breaking after a use or two. If you're a future HVAC tech and you're looking for a starter set, do yourself a favor and buy a testo, field piece, or yellow jacket that's proven to withstand the test of time.

Back many moons ago I did residential A/C and used Yellow Jacket gauges. I gave them to my son for his work and have not needed gauges until now, to work on my old car's a/c. This set of manifold gauges are just as good for a lot less money. Granted, I will use them only occasionally, not everyday. I have always hated short hoses, and this set comes with 5 foot hoses, just what I like. There is no problem with leakage, they seal fine. The high side adapter is difficult to remove unless I shut off car and wait for the pressures to equalize, which means I am fighting less pressure on the high side. My high side port is not easy to get hold of because of its location and by waiting for the pressure to decrease I can push down on the fitting enough to lift the collar. That is an adapter thing, not the gauges, which work great. Yes I would recommend these gauges to a friend.

Moisture causes an AC system to leak. You pull a vacuum on the system to remove any moisture possibly in the unit. Then, the correct way to add Freon is to connect your refrigerant to use your yellow hose and through a port connected to your gauges, evacuate any air remaining in the hose until coolant starts to spray out assuring there's no moisture in the line. These gauges do not contain that valve making them unusable for refilling coolant in the state they're boxed up in. I had to go buy a $10 adapted to put between the two schrader valves at the top on the yellow to insure i did the job correctly. These will work great for diagnosing and pulling a vacuum, just not actually adding the coolant... which is the whole point. If you're looking for a complete set of usable upon opening gauges, these are not the ones. Also, the in depth guide they mention in the description only tells you there are 3 hoses to screw on the gauges, and then proceeds to explain how to check your ac system. There is not an explanation on what each adapter is and used for, there's not detailed parts list, there is not a company phone number, or even a company name. The front of the box says "brass manifold gauges' and leaves it at that. These are very cheap gauges that are only good for diagnostic purposes.

Like others have stated the adapter that's provided does not work for the T-can fittings you buy in the store. The threads do not lineup. Youre dead in your tracks. So they need to be more clear that the adapter provided Will not work. The second surprise was the gauges are in Celsius and not Fahrenheit, not a showstopper but a surprise nonetheless. Perhaps I did not realize it when I ordered it so make sure you order the right type you need. Mfg contacted me regarding my two complaints: I needed the Celsius version was my fault as it is stated in the product description- just be sure you see it. As for the adapter to fit a T-fitting on gas can, it does not come with the product rather the product is configured as std 134a threading. T-fittings for those 12 ounce gas cans commonly sold in automotive stores are different For this inconvenience, the mfg gave me a partial refund without asking for it. This company stands behind their product and customer. Additionally, I've been using the gauges for several days now under constant pressure and very happy with the product. Unlike other gauges I purchased in the past from HarborFreight (junk that leaked), these are performing perfecting. Changing my rating from 3 to 5

Sirve para su proposito pero lo tuve que adaptar para uso doméstico. En general bien

Fantastic

Hola, el manofold es genial, aun no lo he usado pero, fué una excelente elección, precio-calidad, excelente producto,lo recomiendo

Works well but would prefer manifold with knobs for the LP and HP plug

Wasn't sure what to expect as I don't normally buy low-cost tools. This one should be used so rarely that I didn't want to spend too much. I did not use the provided quick-couplings as I had already purchased a set of high/low quick couplings that have valve knobs on them. The unit worked perfectly the first time and have used it a number of times since. The valves hold pressure for weeks (I just disconnected it from my nitrogen bottle for storage and it had residual pressure from a month ago) and gauges are accurate enough for my needs. Hoses provided seem to be of decent quality. If you do A/C for a living... spend more on your tools! If you need one of these occasionally... this will do just fine!