| 摘要 |
A single-seat globe control valve having a disk positioned firmly in an inlet-chest of a valve body so as to face an opening in a dividing wall and an inverted bottle-shaped floating cylinder that has a seat portion at its lower end against which the disk comes into airtight contact. The floating cylinder is airtightly fitted in the opening in the dividing wall for being moved up and down and has many small openings in its peripheral wall which connect its inside with an outlet-chest, and further, has a valve stem connected at its upper end. A fluid from the inlet chest which is regulated between the disk and the seat portion of the floating cylinder, enters an empty space inside the latter. The fluid flowing through the small holes into the outlet-chest has thus been controlled to the desired pressure or flow rate. This control valve does not leak when it is closed, and can be opened and closed with a small amount of force.
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