초록 ▼

An overfill valve apparatus for use in a liquid storage container having a fill pipe includes an upper fill tube and a lower drop tube. A closure valve is positioned intermediate the fill tube and the drop tube. The valve includes a valve head moveable between a first open position and a second clos

An overfill valve apparatus for use in a liquid storage container having a fill pipe includes an upper fill tube and a lower drop tube. A closure valve is positioned intermediate the fill tube and the drop tube. The valve includes a valve head moveable between a first open position and a second closed position. A float is attached to the valve head and is moveable from a first position when the container liquid level is less than a predetermined level and a second position when the container fills with fluid to a predetermined level. Movement of the float towards its second position produces movement of the valve head toward its closed position. The float also is moveable within an envelope corresponding to a diameter less than the diameter of the fill pipe to facilitate apparatus installation and removal. The valve head is mounted internally of a hollow shell. The shell includes in at least a portion which is inwardly flexible to form a pocket accommodating the float during apparatus installation and removal, and outwardly flexible during fluid flow so as to conform to a side wall of the shell to present a uniform, non-flow restrictive shell diameter during such flow.

대표청구항 ▼

An overflow valve apparatus for use in a liquid storage container having a fluid inlet, comprising: an enclosure defining an envelope for insertion in said fluid inlet, said enclosure including a fill pipe; valve means moveably mounted in the fill pipe, said valve means including a valve head moveab

An overflow valve apparatus for use in a liquid storage container having a fluid inlet, comprising: an enclosure defining an envelope for insertion in said fluid inlet, said enclosure including a fill pipe; valve means moveably mounted in the fill pipe, said valve means including a valve head moveable between at least a first open pipe position and a second, closed pipe position; float means attached to the said valve head and movable from a first position when the container is empty to a second position as the container fills with liquid, movement of the float means toward its second position producing movement of the valve head toward its second position, the float means also being movable within the envelope defined by said enclosure, said envelope having a diameter which is less than the diameter of said fluid inlet to permit installation and removal of said valve apparatus; and, closure means defining at least a portion of the enclosure for said valve, said closure means being inwardly flexible to accommodate the float means during pipe installation and removal, and outwardly flexible during fluid flow to conform to a predetermined configuration of said enclosure so as to present a substantially uniform, non-flow restrictive path for such flow.