B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
32/59
B05B 7/04 (2006.01) B05B 7/12 (2006.01) B05B 15/02 (2006.01) B29B 7/74 (2006.01)
Patent
CA 1039495
Abstract of Disclosure A spray gun especially adapted for dispensing foam type plastics or other coating materials which is characterized by two feed lines for the coating materials which are encased in return lines with valves which are selectively positioned to control the flow of the material so as to provide, selective- ly, for spray operation or for continuous return flow to the supply source without passage through the discharge control valves of the gun. The discharge control valve assemblies are readily removable as complete units for cleaning and repair. A solvent flush valve is arranged relative to the discharge control valves to enable the valves, the mixing chamber and passageways in the head to be flushed out with solvent while the valves are in place and while the coating material is recirculated through the supply lines.
227914
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