So... I'd like to get a pump, but being constitutionally opposed to spending more than necessary, I've held off buying a steelhead. I was in Harbor Freight yesterday, and ran across a 12V marine utlility pump with a SS pump head on sale for $35. The manual says it's not designed for liquids over 140F; but that makes me wonder why it would be that limited. I bought one and disassembled the pump housing and saw the impeller and impeller blades are made of a hard plastic that resembles Teflon, but I can't be sure. So I decided to test the entire pump assembly by placing it in boiling water on the stove for 5 minutes.
(It actually boiled for about 15 mins because I was watching the Hawks fight a never-ending battle against the Ducks and forgot about it.)
Anyway, after cooling everything under cold water, I could see no apparent change in size, hardness or durability of any of the impeller parts, gaskets, o-rings, etc.
Now the pump is rated at 300 gph, so I'm guessing it should transfer a 5 or 10 gallon batch in about 5 or 10 minutes, so my little boil test should be a realistic scenario.
Question: What do you guys think? Is there something I'm not thinking about, or is this worth a try?