| 摘要 |
<p>In an expansion valve (1) the pressure vessel (13) of which is constituted by a reduced number of parts and which does not require seal members a valve unit (10) is surrounded by first and second half shells (11,12) which in turn are surrounded by a pressure vessel (13) formed as a one-piece body by moulding resin by an insert moulding process. Since the resin constituting the resin moulded one-piece pressure vessel (13) simultaneously form internal sealing member structures no additional seal members are required to be positioned and mounted. The first and second half shells (11,12) are shaped such that the necessary refrigerant passages for the valve unit (10) are defined in communication with connection holes (2,3,4,5) of the pressure vessel (13). <IMAGE></p> |
