Abstract: A control valve assembly for spray guns comprises a flexible valve having a water-sealing portion defined by a support surface and an abutment surface conjoined to a pivoting rod via a water-stop surface disposed there-between. A water-pressure adjusting valve includes a pressure-relief section having a flow orifice to mount to a valve shaft of a pressure valve and match to the pivoting rod and the abutment surface of the flexible valve thereby. The pressure-relief section, precisely situated between a stop seat of a spray gun body and a valve seat, has a watertight ring fixed at one side to closely abut against the stop seat. A support section, extending at the other side of the water-pressure adjusting valve, has a pivoting hole defining the end portion opposite to the flow orifice thereof. Besides, the pressure valve has a positioning ring mounted to the predetermined position of the valve shaft thereon.

Abstract: A water spray gun includes a body mounted with a socket and a stopper cap and a water outlet fitting to support a water control valve, a nozzle head affixed to the water outlet passage of the body, a lever for operation by the user to rotate the water control valve and to further control the flowrate of water entering the nozzle head, a buffer member mounted in the nozzle head to buffer water pressure, a spray cap capped on the nozzle head, and a spray pattern dial mounted in the nozzle head behind the spray cap and having an adjustment plate pivotally supported between a first spray pattern plate and a second spray pattern plate with a finger rod extending out of a sliding groove of the buffer member and a sliding slot of the nozzle head for operation by the user to change the spray pattern.