| 摘要 |
PURPOSE:To prevent a valve body from deflecting, by installing an outward flange in an inner end of a retained, while inserting an incompressible spacer into space between a port of a valve box and the outward flange. CONSTITUTION:An outward flange 2 is formed in an inner end of a retainer 1 so as to take the specified interval between inner end surface of a port 52 of a valve box 51 and the said inner end of the retainer 1. An annular spacer made up of rounding a incompressible wiry body composed of, for example, copper or a lead alloy, etc., is inserted into space between the outward flange 2 and the inner end face of the port 52, whereby the retainer 1 is prevented from moving to the sideward. Even if a valve body 56 receives large pressure to the outward as well as if energizing force for a plate spring 62 becomes unbalanced, the valve body is no case deflected. |
