Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Patent
1999-01-04
2000-01-25
Walton, George L.
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
52132, 137338, 137433, F16T 120
Patent
active
060168285
ABSTRACT:
A vault suitable for underground burial, having a vent capable of passing air into and out of the vault and excluding rising external water from entering the vault through the vent, and a valve assembly for accomplishing this exclusion. The vault has walls enclosing an open interior storage space. The vent has a conduit communicating between the interior space and the outside atmosphere. The valve assembly is located at the free end of the conduit. The valve assembly comprises a vertical, cylindrical chamber having a lower opening open to the atmosphere and an upper opening connected to the conduit. Two spherical floats of unequal diameter are occupy the chamber, with the smaller float located above the larger float. The upper float is a valve cooperating closely with a valve seat located at the upper opening. A grate or screen retains the floats in the chamber. When rising waters threaten to flood the vault, the floats rise, the upper float seating in the seat and closing the upper opening. The lower float increases buoyant force acting on the upper float.
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Siemens Terrance L.
Walton George L.
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