[cwl1979]

John,

I am confused about what you are asking. If you are going to utilize all the existing plumbing up to the compressor connection, then the outlet on the side of the compressor as Carl has indicated is where you will marry the systems. You will disconnect the three wires inside the pressure switch, white black and green. Then you will simply swap one compressor for the other.

You will not utilize the line going to the pressure switch.

One thing to look out for the connections on the compressor may be metric or BSPP. McMaster Carr is your friend when transitioning from metric to NPT.


I am trying to figure out why there are two lines to the pressure switch. The one looks like it has some metal filter. I dont wnat to plug it off without knowing why the manufacturer went to the trouble of having two lines to the switch when normally there is only the one at the bottom from the reservoir tank.  Thanks for pointing out possibility of BSPP. I ran into that with a chinese UV water purifier. They had many bad reviews for leakage and was not aware that although spt is similar to BSPP, they dont seal.

can you get us a better picture of your pump controller? I only see one line in from the air compressor and a pressure relief valve in the 2 pics you posted earlier.