The 3381-0013 adjustable spray pattern gun is ideal for chemical spraying, wash down and other applications where adjusting between stream and cone spray patterns up to 700 PSI and 19 GPM is needed. Adjustable pattern spray guns, from stream to cone pattern Max PSI: 700 PSI Max GPM: 19 GPM Barrel Size: 7" Nozzle Size: 3mm Inlet: 1/2" MNPT