Curb stop valves are generally installed between the road (curb) and a building or sprinkler system. High quality and reliability are crucial components to the curb stop valve. Once installed, curb stop valves are usually very difficult to service. Curb stop valves are often buried several feet in the ground; this is why they are constructed of high quality, long lasting, tough materials. These water stop valves differ from stop and waste valves in that they don't drain the water out of the non-pressurized side of the line once turned off. We have selected the highest quality brass stop valves in order to insure they will last for many years.