| 摘要 |
PURPOSE:To prevent to generate the stagnation of liquid in the valve itself by a method wherein a protruding seal section, contacted with the seal seats of two dams closely, and a large corner side section, encircled by a part of circular seal section, are recessed with respect to a bottom surface. CONSTITUTION:The circular seal section 13j is formed at the lower surface of a seal member 13c and the protruded seal sections 13f, 13g, extending radially from the center section toward the circular seal section radially and having substantially a V-shape, are formed. The large corner section, encircled by the circular seal section 13ja and the V-shaped seal sections 13f, 13g, is recessed with respect to the bottom surface of a valve body to form a gate section 13d. The gate section 13d rides on the dam 1f-II between the ports A, C with a sufficient distance, therefore, liquid flows from the first port A into third pipe 1c through the third port C when the liquid is introduced from the side of the first pipe 1a. |
