Orion Motor Tech R134a Quick Coupler Adapters, R134a Manifold Gauge Adapters and Hose Fittings HP and LP Connectors for R134a Car AC System, 1/4" Flares, 2pcs

These Quick Coupler Adapters are normally used as hose ends on a R134A Manifold Gauge for testing, removing and installing refrigerant. I had a high-pressure service port which was occasionally leaking and needed a Schrader valve replacement. These adapters have a manually closed and opened valve so when I installed them to replace caps on the two (Hi & Lo) service ports they prevented the service port valve from leaking. Worked perfectly and both can be left on the service ports while using the mobile air conditioner. The quick couplers prevented an expensive A/C servicing and parts replacement job. They fit perfectly and are correctly color coded for Hi & Lo pressure service ports.

acopladores usados que estan desgastados y dejan pasar el gaz....no los recomiendo

Fit well, no leaks, good addition to the tool bag for sure.

Great product works as advertised

Purchased to replace existing non-valved quick connects. This will allow much easier and controllable purging of the hoses.As mentioned by others, the stickers on the knobs have their arrows reversed, assuming the text means what it says. These work by pressing on the center of the a/c service port schrader valves (like the ones on your tires) to "open" them, allowing pressure readings, vacuum evacuation, etc. When the knobs on these adapters are turned ccw, their pins rise, closing the service port. When the knobs are turned cw, the pins descend, opening the port.The graphic arrows, at least on mine, point exactly the opposite of this action.Regardless, they are good quality. I used the o-rings from their included 1/2" adapters as the ones on my (admittedly cheap) gauge set fittings were too large diameter. I haven't tried these yet, so I'll have to see if o-rings are enough to seal the connections - the fitting flares do not bottom out when assembled but this may be normal.