发明授权
US08474476B2 Sanitary hydrant 有权
卫生消防栓

Sanitary hydrant
摘要:
A freeze resistant sanitary hydrant is provided that employs a reservoir for storage of fluid under the frost line or in an area not prone to freezing. To evacuate this reservoir, a venturi is provided that is able to function in hydrant systems that employ a vacuum breaker.
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