Hello, is there anyone that is aware of an automatic drain valve? What I'm trying to accomplish is having a bowl of water get filled off a float valve and drained from the bottom of the bowl multiply times a day automatically. I have an inline sprinkler control valve but that does not work unless under pressure. The bowl would be suspended well off the ground and would only be drained off of gravity. The automatic drain valve for sprinkler systems won't work because it needs to drained straight down and into a pipe. The draining needs to be timer operated. Is anyone aware of a way to do this.