| 摘要 |
A ball cock has a body, two branch pipes connected to it, in each of those a fixed seat is placed, with sealing surface, a ball shutoff device axis of continuous flow opening of which is normal to the axis of rotation, two seats with sealing surface placed in reborings provided on the ball shutoff device at its both sides at one axis. Additionally the cock has support stoppers fixed in the body or in the parts connected to it. |
