Originally Posted by pickles
Any updates on this? I'm curious how you pumped the glycol?
Yes, actually I have several updates for it! I've just been really busy lately (haven't even brewed since new years
for the glycol pump I'm using a 1 gpm 12v diaphragm pump. This pump has an internal pressure switch that kicks it off around 40-50psi. When the controller needs glycol, it opens a solenoid that allows glycol to flow through the chiller coils. the drop in pressure makes the pump kick on.
here's the pump i'm using: http://www.northerntool.com/shop/tools/product_357081_357081
they are also used in rv's for the water supply