| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To satisfy position precision of a valve body and an end cover, and to improve even welding precision between the two in regard to a four-way selector valve used in a refrigerating cycle, particularly, an end cover to be combined with a valve body of a main valve of a four-way selector valve, a four-way selector valve using the end cover, and a method of assembling the same. <P>SOLUTION: The end cover has a larger diameter section and a smaller diameter section sequentially provided in an axial direction, wherein an outer periphery of the larger diameter section of the end cover is adapted to be tightly connected with the valve body, and an end portion of the smaller diameter section of the end cover is adapted to be fitted with a piston of the main valve, so as to define an operating position of the piston, characterized in that the larger diameter section of the end cover has a frustum shape with a larger outer end and smaller inner end, or an end portion of the larger diameter section of the end cover has radially projected flange for abutting against and fitting with an end surface of the valve body. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
