R12 R410 Refrigerant Charging Valve R12 R22-1/4“ Male to 1/4” Female

This valve does exactly what it needs to do, prevents the loss of liquid refrigerant when disconnecting the high side line from the service port. This also prevents the issue with what is known as freeze burn where that liquid refrigerant is spraying on your hand while trying to disconnect a stubborn line from the high side fitting and freezing your skin also known as frostbite. This kit comes with 2 different sized valves which are color coded with a red and a blue cap on the valve. The blue one is a 1/4 inch valve and the red one is 5/16. This can cause some confusion and has led to some bad reviews on this kit. In the HVAC world, these colors have a very different meaning. Red is for the high pressure or liquid line and the red manifold hose is connected to the port with the smaller line. Blue is the low pressure or vapor side and the blue manifold hose is connected to the port with the larger line. On most US split systems, both service ports are 1/4 inch and this is where some have issues. Since this set comes with both a red and a blue valve, it seems to make sense that the red one would be connected to the high side and the blue to the low just like the gauge set does but with this set that's not what the colors mean. If you attempt to connect the red valve to the high side, it's not going to fit as the red valve is a 5/16 and is too large to fit on the standard 1/4 service port and while the blue one is a 1/4 valve and will fit on the low side, you really don't need one on the low pressure side. Since you don't need this type of valve on the low pressure side, just use the blue one on the high pressure side and leave the other valve in the bag. If you do any work on a mini-split system where just about all of them use 5/16 valves, then the red one will come in handy because it will fit those systems and can even be used as an adapter from the systems 5/16 fitting to your manifolds 1/4 inch hose end fittings. Using the valve is pretty easy. Make sure that the valve is fully closed (knob turned counter clockwise until it stops). Screw the valve down onto the high side service fitting firmly finger tight just like with any other hose end fitting or valve. then while watching the gauge, begin turning the knob clockwise until the gauge begins reading pressure and then add one more full turn. If you feel any added resistance to turning the knob after the gauge starts reading, stop there or you could wind up damaging the service port which could cause a leak that is not easy to repair. When done and ready to disconnect, just turn the knob counter clockwise until it stops and it will both release the schrader valve and seal the manifold line, making it a low loss fitting as well. Then you can disconnect the valve from the service port with no real loss or chance of freeze burn. Just remember that the high pressure manifold hose is still containing liquid refrigerant and needs to be recovered or returned to the system thru the manifold set to the low pressure side before removing the valve from the manifold hose. The set does come with a spare set of seals in the bag and are in my case a different color that the ones already in the valves and even though they are both the same color, like the valves, are different sizes so look closely before replacing them when needed.

These are similar to valves used on automotive AC systems. They give you the ability to connect service lines without the loss of refrigerant. Start by screwing this on the fitting near the compressor, attach the hose from the gauges. Then turn the knob to open the system for service. Without this valve, you have to attach the gauge lines directly to the high or low pressure line fittings. If you've done this, you'll know quite a bit of refrigerant sprays out before the line is fully connected or fully removed which may result in frostbit fingers. Using this valve prevents this from occurring. Don't let the colors fool you. The blue one is for R22 systems (fits 1/4" low or high side fittings) and the red one is for R410a systems (fits 5/16" low or high side fittings). Buy two of these sets so you'll have both low and high side fittings for R22 and R410a systems. Don't service AC systems without these!

Could use better gaskets but for the price and just adding refrigerant with my job link probes works great.

I used it once and it will not seal, it is all good idea but terrible execution. I put the valve on hand tight and it leaked when the valve core is pressed in, I even tried to slowly tighten it with pliers and it still leaked. Do not waste your money.

When I first started purchasing some HVAC Tools, I didn't know what to expect in terms of quality. With this brand 'gohantee', it isn't a well known brand in the HVAC community, but I decided to take the chance and give them a shot. The first thing to note, the color red and blue do NOT indicate it goes on the high / low side port as you may think. Instead, it's either a 1/4 or 5/16 port. I ended up purchasing two kits because I was working on a mini-split that had 2x 5/16 ports. I store 1/4 and 5/16 valves and pieces in different kits so I know which one to use easily. The only downside I've found so far is that it takes a little more effort to make it seat and not leak. I feel this is due to cheaper seals in the unit, which can be replaced. Don't over-tighten the connection too much or this can deform the seal and make it leak worse. You should only ever go hand-tight with it. It you need to use pliers or anything else, you're doing it too hard and could break it. Overall, I'm satisfied with the purchase because of the price, but for working on a system, my go-to will be my other Appion tools. These are great to have in the kit just in case or if I need to use both at the same time (Since Appion is 5x more expensive for just a single valve tool).

1 worked 1 leaked. Used the 1/4" one with great success a while ago. Needed to use the 5/16 today and leaked. Changed to the supplied green gasket still leaked. I think it was leaking from fitti g not gasket area. Threw that one in scrap pile. The safety and ease of the 1/4" one was great. Now looking for a new 5/16" one. Don't purchase these.

Great set of back-seat valve core depressors which make attaching and removing hoses and gauges a breeze, really minimizes refrigerant loss on disconnect especially. You get one with a 1/4 fitting for use with most residential split HVAC systems and one 5/16 for use with mini splits (so if you want to use on both high and low sides of your home system at once, you will need two sets). Read in the reviews here that the while plastic seals inserted in these on arrival are not very good - which is maybe why these are now being provided with a pair of green rubber seals. I picked out the white plastic ones and inserted the green ones straight away - and they seal perfectly.

Bought this on a whim, so glad I did. Much better than valves on ends of hoses with a core depressor added when necessary. Description does not say but these are precision core depressors that back seat, making it a fingertip control service valve on the end of your hose. Don't let the low price fool you, I have used these for weeks now every day under all conditions and can't find any fault. I assume that the seals will eventually wear out, but they send an extra set with the valves so even that is covered. I am tough on tools, and these have already lasted longer than some brand name core depressors, and no O-rings to shoot out when you least expect it. Larger valve is a joy to use on mini-splits. In every situation, no more accidental Freon or oil spills with a customer looking over your shoulder.

What I like about these..These valves I wish I knew existed when I started 6 months ago in my career. Every single time I take my service hoses off the service valves high and low side, I had refrigerant loss due to the shraeder core being depressed. That included putting on my service hoses. I can now put this valve on and zero refrigerant loss. I also used them on pulling a vacuum. The only issue I saw was that the connection to the service valves is very finicky as it relates to keeping a tight seal. Make sure that they are good and tight then add your service hoses. One negative and it needs to be said, they are 1/4 inch female so in order to service non-horizontal units, you need to buy double. That gives you a pair of 1/4 inch valves and valves that will fit your horizontal units. Best money that you will ever spend for sure. My trainers service valves were covered in refrigerant after he removed his hoses. Mine were spotless! Spend the money and buy these.

Adatte ai climatizzatori di nuova generazione per via dell'attacco di 5/16

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Bonjour produit défectueux non étanche la molette ne ferme pas totalement la vanne

good quality