| 摘要 |
PURPOSE:To operate a valve mechanism in a valve housing positively by simple constitution, and to increase the speed of valve assembly by supporting the rear end section of a valve stem with a valve body by the front end section of a valve seat, bringing the rear end section of the valve stem and the front end section of the valve seat into contact so as not to be shifted mutually between a plurality of small projecting sections of the peripheral side face section of the valve seat and the inner circumferential wall surface of the valve housing and forming a clearance so that a fluid can be passed through the contacting sections. CONSTITUTION:The front end section of a valve seat is inserted into the link of the valve seat section, a recessed section having a circular horizontal cross section and being formed by the valve fitting throttling-up section of the central section of a mountain cap in a housing member, toward a lower section. The front end section of the valve seat is inserted until it is brought into contact with the top face of a stem rubber 6, an inner circumferential edge section of which is brought into contact with a valve stem 3 previously disposed to the recessed section and a fluid conducting port section formed to the intermediate drum section of the valve stem 3, at that time, a plurality of small projecting sections 7 formed in the longitudinal direction to the peripheral side face section of the large diametral section of the link of the valve seat section in the inserting process is guided, and comparatively narrow clearances are shaped among these projecting sections 7. |
