| 摘要 |
<p>PURPOSE: To obtain a cock acting surface of which has high reliability by releasing or shutting off the fluid flow with a one-way valve while rotating a shutoff means having a bore with a control means, and connecting the inlet with the outlet or shutting the inlet from the outlet. CONSTITUTION: A cock 1 has an inlet coupling pipe 2, an outlet coupling pipe 3 and a shutoff means 4 arranged between them. The shutoff means 4 is surrounded by inlet flange 6, flange 7 and housing 5 formed with a cylindrical pipe 8. And, a cylindrical part 10 axis of which is perpendicular to the axis of the cylindrical pipe 8 is arranged in the shutoff means 4. A bore 11 perpendicularly extending to the axis is provided in the cylindrical part 10. A valve 25 is arranged in the inlet coupling pipe 2 abutting to inlet side of the shutoff means 4. On the other hand, a driving unit 54 is arranged in a control unit 38. By this constitution, the cylindrical pipe 8 is rotated to connect the inlet with the outlet or shutting off the inlet from the outlet.</p> |
