I have an issue with my urinal sloan flush valve, it is fed with raw water from a well that has too much sediment and creates issues where it leaks into the urinal and won't completely shut off. So I am thinking of using an old style valve that I saw years ago but do not know if they still make it or what it is called. The valve had a round knob that when turned it would let water flow and when you let go of the knob it would spring back and shut off the flow. Does anyone know if they still make this valve and what it is called thank you