| 摘要 |
The present invention relates to a thermostatic expansion valve (12) comprising a body (30), an inlet (22), an outlet (24) and a replaceable cartridge (50), the body (30) defining a route between inlet and outlet for a substance to be regulated by the valve, the cartridge (50) being configured and positioned such that the substance must flow through at least a portion of the cartridge, the valve (12) having a valve port (60) and a valve element (70) enageable therewith to regulate flow of the substance, the element (70) being resiliently biassed either open or shut, modulating means (40) associated with the valve (12) serving to act against the resilient bias to control flow of the substance, and wherein the cartridge (50) is positioned in the body (30) of the valve (12), thereby allowing the cartridge to be replaced without disconnecting feeds connected to either the inlet (22) or the outlet (24). <IMAGE> |
