Patent ID: 7059545

Claim:
A coating material dispensing apparatus including a connection to a source of coating material to be dispensed, a nozzle through which the coating material is dispensed, a first valve including a first valve component between the connection and the nozzle, the orientation of the first valve component controlling the flow of coating material from the nozzle, a mechanism for changing the orientation of the first valve component, the mechanism and first valve component being removable from the dispensing device as a unit, a connection to a source of compressed gas or mixture of gases for dispensing with the coating material, and a second valve for controlling the dispensing of compressed gas or mixture of gases with the coating material, the second valve including a component coupled to the mechanism, the condition of the second valve being controlled by the mechanism, the mechanism including a piston and a cylinder in which the piston is reciprocable to move the first valve component to control the flow of coating material from the nozzle, the cylinder closed by a closure, the second valve component mounted to the piston from a closure side of the piston for movement with the piston, permitting removal of the second valve component by removing the closure and removing the second valve component without removing the piston from the cylinder.