SEAT BLOCK AND VALVE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a seat block for easily and reliably maintaining the close contact of a seat part without being influenced by working conditions. SOLUTION: A seat part forming body 43 is provided in a housing 67 in which a valve passage 66 is formed so that a piston 28 is seated thereon to open/close the valve passage 66. A spring member 23 imparts elastic force to the seat part forming body 43 to hold the seat part forming body 43 in cooperation with the housing 67. COPYRIGHT: (C)2009,JPO&INPIT