| 摘要 |
A venting valve assembly for a waterbed having a water compartment is provided. The assembly includes an exhaust port for the water compartment which includes a stem portion, an upper cover threadedly coupled to that stem portion, and a lower cover also coupled to the stem portion. Defined within the stem portion is a valve chamber with which a vent hole through an upper wall of the stem portion and a plurality of through holes in the lower cover are in open communication. The assembly also includes a pontoon disposed within the valve chamber for buoyant displacement responsive to entry of water into that valve chamber. The pontoon is formed with a substantially hollow body to which a resilient plug cover is coupled, and on which a plurality of outwardly protruding strips are formed. As water from the waterbed's water compartment enters the valve chamber, the pontoon is displaced buoyantly upward until the resilient plug cover engages the vent hole. As water exits the valve chamber, the pontoon descends to disengage the vent hole, so as to enable release of gas therethrough.
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