The Kincrome Sprayer Regulator lets you precisely control pressure from 0 to 100 PSI (6.9 BAR)* when broadcast or spot spraying. A 51mm pressure gauge makes it easy to monitor system pressure. Designed to work with all Kincrome 12V Sprayers. The unit contains three working ports: 19mm (3/4") quick-connect and two 6.4mm (1/4") FNPT for use with spray guns, broadcast booms and pressure gauge. The 19mm (3/4") quick-connect bypass port returns fluid to tank for chemical agitation. Kincrome Sprayers are all compatible with Roundup agricultural herbicide.