siamese connection

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Noun1.siamese connection - an inlet with two or more couplings to which a hose can be attached so that fire engines can pump water into the sprinkler system of a building
inlet, intake - an opening through which fluid is admitted to a tube or container
sprinkler system - a system for extinguishing fires; water from a network of overhead pipes is released through nozzles that open automatically with the rise in temperature
References in periodicals archive ?
The siamese connection and temporary standpipe and egress would have to be maintained along with required signage.