Foam guns contain more parts than cannons, such as a spray nozzle with trigger and control knob near it that can adjust bead size (1/8 to 3 inches). Furthermore, two-finger triggers make operation ...

Closed cell spray foam is made by mixing two chemicals. Each chemicaltravelsdown a separate hose and are mixed together as they are sprayed out of a gun at about1100-1200 psi. The chemicals need ...