SPRAY GUN FOR AGGREGATES

摘要

A spray gun (10) for spraying fluent materials having a high concentration of particulate matter. The spray gun (10) is connected to a source of pressurized air and a source of spray materials. The air and spray materials mix in a nozzle (50), atomizing the fluid in the spray materials before the mixture is discharged from the spray gun (10). A valve (31) is provided to control the flow of the spray materials. A conduit (33) passes through the valve (31) to provide a secondary source of air to atomize the fluid in the spray materials. The valve (31) is also configured to ensure that no spray materials can enter the chamber (40) of the valve (31) when the valve is then closed.