| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the seal performance of a joined part between a power element and a body in an expansion valve.SOLUTION: The expansion valve according to one aspect includes: a power element 3 which has housings 26, 27 made of metal different from a body 2, and a drive part provided in the housings 26, 27 and generating driving force for opening and closing a valve element, the housings 26, 27 being fixed to seal an opening end of the body 2; a metal seal part 60 provided between the body 2 and the housing 27 and sealing the inside and outside by deformation of a metal; and an elastic seal part 62 sealing the inside and outside by interposing an O-ring 30 between the body 2 and the housing 27 so as to enclose the outside of the metal seal part 60.</p> |
