E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 29/14 (2006.01)
Patent
CA 2189316
A gate valve box adaptor structure, the present invention provides a permanent support for the key box bonnet that is unaffected by the surrounding environment. The adaptor is supported on the gate valve to a positive location for the key box bonnet at a level which prevents infiltration of soil and moisture into the bonnet. The adaptor is provided with a resilient gasket of a unique design to provide a cushion and to create a seal for the bonnet on the gate valve. A plurality of liquid infiltration prevention structures for preventing liquid infiltration into manhole assemblies.
Gagas Michael
Gagas Michael
Goudreau Gage Dubuc
LandOfFree
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