PMC-Polymac has a long history of manufacturing affordable and dependable equipment for the spray foam industry, and the proportioners available at SPF Depot are no different. Browse our large selection of air driven and hydraulic proportioners, ideal for small residential or demanding commercial jobs. A PMC proportioner or spray foam reactor is a vital piece of spray foam insulation equipment that maintains the proper temperature of the chemicals and pumps them through the hose to the applicator. The spray foam insulation machine, like the proportioners found here, produce consistent results time after time. Check out each spray foam reactor page for technical specifications. The PMC Proportioner rigs can also be used in a range of spray on coating applications like roofing, spray-on truck bed liners and more.