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(The answer was farmtek.com.) Great ideas! I had looked at nipple watering systems and they were very pricey but I guess when you use a water tank you don't need an expensive pressure regulator. If this is true it seems those pressure regulators are completely ridiculous. Perhaps all you would need to hook up to the main line is a water tank that is big enough for a float valve (such as those used by a toilet or swamp cooler). Or does the tank need to be bigger/higher to get enough pressure?
Idon't think I need a regulator. There isn't hardly any presure. I think they work fine. This is not a presurized system. I'll screw a presure gauge in the end of the drinking pipe and post the presure. When you hit the nipple a slow dribble comes out it's not like a river.
Float valves are a good idea with water storage The way a float valve works is on water level. A water float raise up and down that operates the valve open-close. I think it would work great with a troth system.
I thought the pressure regulator was needed for a nipple watering system if it is hooked into a high-pressure house water line, basically to reduce the pressure. A float valve and tank could instead be used to reduce the water pressure, so water doesn't squirt out of the nipples.
Troughs will get dirty but since ducks prefer water to wash their beaks, I am considering a trough with a float and a flushing system (like a toilet). The input water sprays in a thin stream and the drain stays open long enough to wash junk out of the trough. A timer could be used to flush it automatically every day. This would be in the run because ducks will make a mess. Nipple waters would be great for the coop. These were recomened to me by a duck expert.
