Hello I am in the process of building a Cheap MLT out of a 5 gallon Igloo cooler( got it for free) I was going to put a valve in it with a stainless braid for batch sparging. I am trying to build it without spending any money. My grandfather is a retired plumber and has boxes of new all brass gate valves and buckets of brass fittings, as well as hoses with the stainless braid on it. But does not have any ball valves. Any reason why all the setups I see here use ball valves?Is it just a cost factor since the ball valves are half the price of the gate valves? Can I use the gate valve? Also is 12" long enough for the stainless braid? Thanks