Control valve arrangement for dental equipment

A control valve arrangement for dental equipment, wherein at least two modular type control valve assemblies having at least three functional zones are combined into a control group disposed between end closure elements and arranged to be clamped to form an entity, wherein aid modules are clamped together in one direction by longitudinal tie rods and have channels for control and supply media made up of channel sections having ports which are joined together, said channels arranged to extend in said one direction of said modules, further wherein said modules comprise substantially identical bodies having at least two sides with said ports disposed in said sides, which are arranged to be clamped together with each said module having said ports arranged symmetrically to a normal central plane (ZX) which extends in said one direction of clamping, each said module further being provided with a cross chamber terminating in a valve seat, said cross chamber having a geometrical axis (Y) which extends perpendicular to said one direction of clamping of said modules and is intersected at an intersection point at right angles by a central geometrical vertical axis (x) of said module, said module including a third geometrical axis (z) passing through said intersection point and extending at right angles to said geometrical axis (y) and said vertical axis (x), and that in the interior of each module there are provided further channel sections which extend between the ports disposed in said sides.