High-volume foam spray gun

A spray gun assembly comprising:

• a main body;
• a mixing section coupled with the main body, the mixing section comprising:
• a chamber bore, and
• a mixing chamber movingly disposed within the chamber bore, the mixing chamber further comprising:
• a first lateral orifice, a second lateral orifice, a central mixing bore, central mixing bore outlet, and a mixing chamber end;
• a trigger;
• a coupler having a first coupler end engaged onto the mixing chamber end, the coupler having an inner coupler diameter in a coupler diameter range of at least 0.4 inches to no more than 0.8 inches;
• a nipple coupled between the coupler and the spray tip cap;
• a spray tip disposed through the spray tip cap, and extending outward therefrom in a spray tip range of at least 3 inches to no more than 3 feet;
• wherein an inside bore of the spray tip is configured with a helical groove;
• a first fluid inlet section proximately associated with the mixing section, the first fluid inlet section comprising a first fluid inlet, a first fluid outlet, and a first fluid flowpath therebetween;
• a second fluid inlet section proximately associated with the mixing section, the second fluid inlet section comprising a second fluid inlet, a second fluid outlet, and a second fluid flowpath therebetween;
• an air inlet section proximately associated with the mixing section;
• wherein the first lateral orifice has a first lateral orifice diameter in an orifice size range of at least greater than 0.1 inches and no more than 0.2 inches, wherein the second lateral orifice has a second lateral orifice diameter in a second orifice size range of at least greater than 0.1 inches and no more than 0.2 inches,
• wherein the spray gun assembly is operable to spray a foam product out of the spray tip at a rate of in a spray range of at least 10 lbs/min to no more than 100 lbs/min, and wherein the sprayed foam product is used in the support of piping;
• wherein the spray gun assembly is configured to spray the foam product at a distance range of at least 40 feet and no more than 60 feet;
• wherein the spray gun assembly is coupled with a first fluid feed source comprising a resin component, wherein the spray gun assembly is coupled with a second fluid feed source comprising an isocyanate component, wherein the resin component and the isocyanate component are each characterized as being able to mix together to form a closed-cell foam, and wherein the sprayed foam product is characterized as being an open-cell foam.