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Abstract

A high-pressure mixing head for at least two fluid components to be mixed together. The mixing head comprises a movable mixing chamber, defined by a cylindrical hole whose longitudinal axis is parallel to the axis of an outlet duct; the mixing chamber is provided in a slider movable in a guide channel at right angles to and crossing the outlet duct for the mixture. The slider is movable from a first operative position in which the chamber is disposed on one side of the outlet duct, in correspondence with the nozzles for injecting the components to be mixed, and in which the outlet aperture of the mixing chamber communicates with the outlet duct, to a second position in which the injectors communicate with component recycling ducts, and in which the mixing chamber is axially aligned with the outlet duct and with a sliding cleaning member.

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First Claim