Inventors:
Yee Kwong Cheung - San jose CA, US
Joel P. Melito - Wilmington NC, US
International Classification:
G21C 15/18
Abstract:
A passive check valve system according to the present disclosure includes a vacuum breaker operatively connecting a wetwell and a drywell. A discharge pool of water may be provided in the drywell. A housing structure is provided in the drywell to enclose the vacuum breaker. The housing structure may have one or more discharge pipes extending into the discharge pool, and the volume of the discharge pool may be greater than an interior volume of the one or more discharge pipes.