Quote Originally Posted by Barry Wolk View Post
Yes, the tube can be copper. I believe that 1/2" electrical conduit is about the same size. Yes, you should be able to adapt the vacuum-controlled water valves to any kind of conduit. Do you have a Mark II parts book? The drawings for the system are quite good.
Hey Barry...Recieved my Mark II parts book...no diagrams on the vacuum controlled water valves, heater cores etc. I got the same book you showed me...maybe I' missing something?