Birth of the Blue Missile

I spent part of today converting one of Vintage Air's normally closed solenoid heater valves into a normally open version. All this took was to fabricate a new intermediate connecting plate. I have ordered a second which will be installed in the normal fashion.Then use the NO valve to divert hot water being pulled from the back of the heads to the heater core. Ill wire the second one in parallel so the signal from the unit will close one and open the other.
Andrew