Reply to "Filling a completely dry coolant system"

comp2Member

quote:
Originally posted by rbarkley671:
Seems to me the best way to fill a cooling system or purge a "full" one would be to pull a vacuum. All the air would expand out leaving only water. Never tried it or seen it mentioned. Turns out Sears (and many others I'm sure) sell a kit for just that:
http://www.sears.com/u-view-ai...ockNo=3&blockType=G3
Anybody tried using a vacuum?

Funny you mention that. I had my tank and vacuum pumped doing that very thing last weekend. I have a float vent used on heated floor systems and a one way valve. I pulled off the hose and hooked the vacuum directly to the heated floor float vent. These are designed to let air out but they have a float which closes when the air is out:

4/29/1412:53 PM

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