Flow controlling hydrant structure

Details Flow controlling hydrant structure Flow controlling hydrant structure

2005-08-30

2005-08-30

Michalsky, Gerald A. (Department: 3753)

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

C137S360000, C137S606000

Reexamination Certificate

active

06935358

ABSTRACT:
A dual hydrant includes two spaced apart tubular bodies to receive in-flow of fluids A and B, a fluid mixing zone to receive fluids A and B from the bodies, manually operable flow control valves in the two tubular bodies, primary and secondary check valves in the respective bodies to pass forward fluid flow toward the mixing zone, and to block reverse flow, an outlet from the mixing zone.

REFERENCES:
patent: 2569857 (1951-10-01), Jaegle et al.
patent: 3828815 (1974-08-01), Botnick
patent: 4976279 (1990-12-01), King, Sr. et al.
patent: 5228471 (1993-07-01), Hoeptner, III
patent: 5752542 (1998-05-01), Hoeptner, III
patent: 6206039 (2001-03-01), Shuler et al.
patent: 6386223 (2002-05-01), Hoeptner, III

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