You need the self sealing fittings. We've linked to them here before. They're pricey, so you might consider a cheap valve and standard fittings.
As for transfering the heat to the chilled water, why don't you run the coolant through it directly? Otherwise, a radiator (heatercore) is fine. There are slightly more efficient ways, but expensive. Google: "heat exchanger" : either way you'll learn something.
|