Gate valves are the most common type of valves that are used in domestic potable water supply systems. They are meant to operate in either an open position or a closed position, not for regulating fluid flow. Brass gate valves work very well in applications where corrosion is a concern. We have handpicked a couple of durable gate valves manufactured by the well-known brand: Profec. They can be bought in more than ten sizes ranging from 1/4" to 6".