Orion Motor Tech R134a Self Sealing Can Tap, Self-Sealing Can Opener for R134a Refrigerant Self-Sealing Cans, with Tank Adapter for 1/4" and 1/2" AC Charging Hoses for Refilling Automotive AC Systems

I purchased this in conjunction with a popular R12 refill / gauge and puncture type can fitting setup to use with a self sealing can of R134a to refill a fridge that was low on charge. I also purchased one of those blue screw on adapters, thinking that if that one worked, I would return this one unused. Well, come to find out, blue screw on didnt work, and everyone is complaining that the sealing washer in it is too thick, and some even cut the washer by 1/2 thickness or more before it worked. I returned the blue piece of non-working plastic, and attached this valve to the hose fitting for the can, screwed the can onto this one, and lo and behold it worked fine! You do have to figure out what depth to turn the plunger down to though ,too far and it restricts freon, and too little and it doesn't open the seal on the can, but it's a much more confidence inspiring device than the plastic adapter, and works perfectly, IMO.

Works fine. Good seal.

Works perfect and a good value.

Llega

This is a nicely made brass valve, and I have no complaints about it. There were no burrs or defects. BUT, the manufacturers of the refrigerant cans are now making the cans so you can take off the valve without all the remaining refrigerant coming out. There is a little silicone flap seal in the can, and the valve has to push that inward for the refrigerant to flow. THIS ONE DOES NOT WORK ON SELF-SEALING CANS. That's not the seller or manufacturer's fault, because they make it clear that this is for puncture-type cans. But they do not work on the self-sealing cans. For the self-sealing cans you need a valve that opens the seal with a FLAT tip, not a pointed one. If you use this on a self-sealing can no refrigerant will flow. The valves for self-sealing cans look almost exactly like this one, but with a flat plunger, not a pointed one. They're available here as well for the same price.