ZR-1 Net Registry Forums - View Single Post - Air Conditioning Pro's & Con's of Converting to 134

32valvesftw · 02-23-2017

Something I ran into when doing a r134 conversion is that the system I was installing said to not to add any dye to the system, this is because the system used a thermostatic expansion valve rather than a pito tube and the dye will trash the valve. And yes it is true it will. I know from experience.
Now for a straight up ZR-1 conversion this may not be an issue as I have no idea if the ZR1 uses a TEV or a PT.

02-23-2017	#11
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 529	Re: Air Conditioning Pro's & Con's of Converting to 134 Something I ran into when doing a r134 conversion is that the system I was installing said to not to add any dye to the system, this is because the system used a thermostatic expansion valve rather than a pito tube and the dye will trash the valve. And yes it is true it will. I know from experience. Now for a straight up ZR-1 conversion this may not be an issue as I have no idea if the ZR1 uses a TEV or a PT.