Pressure Wash Gun Assembly Inlet Fitting:3/8-inch MPT Plug The black nozzle is always

The black nozzle is always a 6540

I use them mostly for cleaning brick and lower portions of vertical walls

The Topaz Compact valve features Jobe's quick-connect Detach system

and you use a standard chemical injector (like this one here)

Do not use 1/2" hose

Pressure Wash Gun Assembly Inlet Fitting:3/8-inch MPT Plug The black nozzle is alwaysThis Pressure Washer Gun Assembly comes complete with the Suttner ST 2305 Safety Orange Easy Pull Trigger Gun, a 1 4 inch Mosmatic Gun Swivel, a 12 inch Suttner Star Shaped Grip Wand, a 1 4 inch FPT quick coupler, and a 3 8 inch MPT quick coupler. This is the gun set up I use for soft washing via downstreaming for house and building washing. I love this gun because it is very easy to use and the trigger is very easy to hold open. Suttner ST 2305