US Patent 8967200 Fluid control valve

In order to provide a fluid control valve that can flow a large amount of fluid with a compact arrangement, ring-shaped bottom formed grooves that are in communication with an upstream side flow channel through a valve inner flow channel and ring-shaped bottom formed grooves that are in communication with a downstream side flow channel through a valve inner flow channel are arranged alternatively and plurally between a seating surface and a valve seat surface, and a communication bore, which is an opening in communication with the bottom formed groove of the valve inner flow channel, is formed at least on the side surface of the bottom formed groove.