Hydraulic and earth engineering – Fluid control – treatment – or containment
Patent
1993-07-27
1994-03-22
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
1372361, 141 86, 285192, 405154, 405128, B65G 500, B65B 306
Patent
active
052957608
ABSTRACT:
A leak testable bulkhead around a pipe penetrating through a wall, comprising a cylindrical hollow insert for partial passage through a hole in the wall, and through which the pipe passes. The insert has a perpendicular abutment flange preventing complete passage through the hole. Also provided are two rubbery gaskets for sealing, placed on each side of the hole against the wall with the flange abutting one gasket, and a wide-lipped washer against the other gasket. A nut threadably engaged on the insert and placed against the washer secures the insert, gaskets and washer tightly in place. Also included are two flexible reducer boots, a smaller of which is sealingly affixed over an un-threaded end of the insert adjacent the nut and reduces downward and sealingly affixes around the pipe passing through the insert. A larger of the reducers sealingly affixes onto the washer, and reduces downward and sealingly affixes over the pipe slightly beyond the smaller reducer so as to encase the nut and smaller reducer. Connected air passages and chambers are defined in communication with the inner sides of each sealed area. An air input valve on the larger exposed reducer boot allows pressurizing of the passages and chambers so that the ability of the sealed points to retain air pressure may be tested and monitored with a pressure gage.
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