Spray applicator for spraying reaction mixture, e.g. polyurethane mixtures of polyol and isocyanate to interior trim assemblies of vehicles, comprises dispensing head, valve plate having channels, and rotatable valve elements

A spray applicator comprises a dispensing head having a mixing chamber and an outlet, a valve plate having channels, and rotatable valve elements. A spray applicator (10) comprises a dispensing head in fluid flow communication with material sources that each contain a material to be dispensed and having a control fluid circuit, the dispensing head having a mixing chamber and an outlet; a valve plate disposed in the dispensing head, the valve plate having channels, where each of the material sources is in fluid flow communication with a supply channel, each of the supply channels having a valve seat; rotatable valve elements, where one of the valve elements is disposed in each of the valve seats, a first group of the valve elements having a material dispensing port that has a dispensing position in which material is dispensed into the mixing chamber and a recirculating position in which material is recirculated, at least one of a second group of the valve elements having a dispensing position in which material is dispensed into the mixing chamber and a shutoff position, and that is operatively connected to the control fluid circuit at a first port and a second port, and where the control fluid circuit is connected to actuators (76), where each of the valve elements has one actuator port and a second port, the control fluid circuit selectively pressurizes either the first port or the second port to arcuately shift the first valve elements between the dispensing position and the recirculating position and to arcuately shift the second group between the dispensing position and the shutoff position, where when the valve elements are in their dispensing position the material in the one material source to which its associated supply channel is connected is provided to the mixing chamber and then to the outlet. Eine Spritzauftragsvorrichtung zur Abgabe einer Reaktandenmischung aus mehreren Bestandteilen und zur Abgabe von Spülmaterialien. Die Auftragsvorrichtung weist eine Ventilplatte mit mehreren Ventilsitzen für zylindrische Ventilelemente auf, die bogenförmig durch eine Steuerluftschaltung verschoben werden.