| abstract |
In its housing (10), an H-shaped mixing fitting has horizontal and vertical dividing walls (20, 20', 22, 22') with which a rotary slide valve (32) interacts. Bypass bores (42, 42') are arranged in the horizontal dividing walls (20, 20'). In a first rotary position, plugs (36, 36') inserted on both sides into the housing (10) connect the bypass bores (42, 42') to the boiler feed (12) and the boiler return (18) respectively with a transversely axial bore (38, 38') while simultaneously shutting off the mixing chamber (24, 30). In a second position of the plugs (36, 36') turned through 90 DEG , the connecting passage from the boiler feed (12) and from the boiler return (18) to the mixing chamber (24, 30) is produced via a milled portion (40, 40') on the plugs, while the bypass bores (42, 42') are closed at the same time (Fig. 1). <IMAGE> |