Freedom Semi-float-type steam trap, only one and a half barrels of the ball-type float for the activity components, opening down, the ball barrels that are sluicegate pieces, but also seals.

• 自由半浮球式疏水阀只有一个半浮球式的球桶为活动部件，开口朝下，球桶即是启闭件，又是密封件。