| 摘要 |
The present invention relates to a cock valve, of which a valve body is made of a metal material, and in state where a seat portion is made of a metal material, because the valve body moves in a linear direction by a double acting cylinder and presses the seat portion. Therefore, even when the valve body is in an open position and foreign substances, contained in a fluid flowing in from a fluid path, adhere to the valve body or the seat portion and become solidified, the valve body maintains the proper opened or closed position as the solidified foreign substances are crushed by the forcible pressure of the valve body and the double acting cylinder as the valve body converts into a close position. |
