I have been trying to locate some valves for the ballast system that could flow more water than the factory ones. The ones on the newer boats are much larger than the ones in my 02 LSV. Anyway, I have found the ones below, but have been hesitant in ordering them. I would still like to find a gate valve of some sort that is not sprinkler related. Has anyone tried these or even heard of them? They have a straight through design instead of the traditional up and over.

http://www.irritrol.com/pdf/sellsheet_700.pdf
http://www.irritrol.com/valves/valves_700s.html

Let me know what you guys think.