| 摘要 |
PURPOSE:To facilitate the attachment of a separate plate to a control valve body by integrally connecting a resilient material to the separate plate so as to improve the strength of the layered planar structure. CONSTITUTION:A resilient material 1 such as elastomer-like rubber or plastic, or rubber asbestos or rubber organic fiber, etc. is coated or glued on one side of a core material 2 of a separate plate B to obtain an integral layered planar structure. As the separate plate B with the integral resilient material 1 has a strength to fully maintain its shape because of the layered structure, there is no need to make a fine adjustment of positioning at the time when the separate plate B is attached to a control valve body, and so, the attachment is significantly facilitated. |
