CONTROL VALVE UNIT

摘要

A control valve unit (10) has a central axis and comprises a plurality of modules (24, 25, 26, 27, 28, 29) each provided with coupling means (47, 48) for coupling one module to another in a leak-tight fashion, the modules (24, 25, 26, 27, 28, 29) being detachably coupled together in a linear arrangement along the central axis and each being independently rotatable about the central axis. The modules (24, 25, 26, 27, 28, 29) are formed of a plastics material, and comprise valves and other fluid control devices (36, 38, 44, 46, 84) for the control of fluid flow from a fluid circuit (12) through the control valve unit (10) to a terminal load (14), such as a fan coil unit. The coupling means (47, 48) comprise interengaging annular flanges (50, 52, 56, 58, 60, 112) and annular recesses (64, 114) which are locked together by means of a clip (70) to form leak-tight joints between the modules (24, 25, 26, 27, 28, 29).