Brass made 3 way switch way, installed on hydraulic valve for AUTO-OPEN-CLOSE This brass ... , normally it marks AUTO-OPEN-CLOSE. The main port is 1/4" (male) as inlet, which can pass water ... /8" female to connect command tubes. When the switch arrow points to different outlets, the flow will pass ... the inlet to outlet.Max.pressure is 10 bar.Basically, this valve is for hydraulic valve to select functions ...