| 摘要 |
<p>PURPOSE:To perform direct adhesion of a seal surface by a method wherein a seal mechanism comprises an annualar gasket space formed between the annular coupling surfaces of two members and an annular gasket, the gasket space is formed in the shape of a wedge in cross section, and the gasket is formed in a shape in which the side of a wedge shape is swollen. CONSTITUTION:A valve body 10 is disassembled into a body part 11 and a flange part 12, and the flange part 12 is securely fastened against the body part 11 through a bolt 13 and a nut 14. An annular coupling surface 16 of the flange part 12 is adhered to an annular coupling surface 15 of the body part 11, a wedge-shaped gasket space 17 in a right angles triangle in cross section is formed between the annular coupling surfaces, and a gasket 18 is arranged. The gasket space 17 is formed in the shape of a wedge in cross section when the annular coupling surface 16 is adhered thereto. The gasket 18 is formed in a shape wherein the side of a wedge shape is swollen, and an expandable 19 is mounted externally of an outer peripheral surface. As a result, the sizes in a fastening direction of the two members are always kept at a specified value.</p> |
