TORO CO M/R IRRIGATION L2034 Automatic Valve Adapter, 3/4-Inch 3/4" Inch Automatic Valve Adapter Used To Convert Richdel, And Lawn Genie Manual Valves To Automatic Works With Any Low Voltage Sprinkler Timer Adjustable Water Flow Bleed Screw For Manual On-off Operation For Plastic Valves Manual flow control makes it possible to control the amount of water pressure going to the zone