Automotive Air Conditioning Information Forum

hi all, i would like to test and then recalibrate my POA valve for R134 using the procedure outlined in the link below. getting shop air to the red/high side hose and attaching the blue/low side hose to the valve is no problem. however, connecting the yellow hose to the inlet on the valve is. are there any off the shelf fittings i could use for this? thanks.
https://redirect.viglink.com/?format=go ... id%3D16311

Try contacting Cold Hose in Ocala, Florida. They might be able to fix you up with a suitable fitting.

1/4 turn counterclockwise from the R12 position gets you real close

john thanks for the info and doug thanks for the suggestion. a friend over at the corvette forum has graciously volunteered to send me his fitting kit just for doing the test and calibration on poa valves. i got lucky.

Good deal. Let us know how it goes.

1/4 turn should get you to 26psi

after the adjustment tools get here i'll have a go at it and post back. should be interesting.

Thanks, we don't get enough follow-up posts

Tried to test the poa valve today. i set up the test rig as per the paper that has been referenced and posted here many times. the shop air is run through a drier and regulated to 75psi. as soon as i crack the high side valve on the manifold i can here air bleeding through the poa valve, there is no "pop". what am i missing. thanks.

I'm not the POA guy. I would think any sound of leaking air is just that. If air leaks, I would refrigerant would also.