Non-educting back flow prevention device

Details Non-educting back flow prevention device Non-educting back flow prevention device

1997-05-06

2000-08-08

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137861, F16K 2404, E03C 110

Patent

active

060986514

ABSTRACT:
Disclosed is a non-educting device (10) for preventing back flow of contaminated water into a potable water system. The device (10) includes first and second nozzles (33, 35) in series flow relationship to one another, an air gap (49) between the first and second nozzles (33, 35) and a water inlet (27). In the improvement, the inlet (27) is the sole liquid inlet of the device (10) and the first nozzle (33) is between the air gap (49) and the inlet (27). Such nozzle (33) includes a tapered portion having an axial length (AL) and a circular discharge opening (59). The ratio of the axial length (AL) to the diameter of the opening (59) is in the range of 0.7 to 1.1. Other features involve a unique containment bowl (21) and a secondary air gap (19) in liquid flow relationship to the containment bowl (21).

REFERENCES:
patent: 1961795 (1934-06-01), Sheridan
patent: 2056357 (1936-10-01), Luff
patent: 2056807 (1936-10-01), Shanley
patent: 5176165 (1993-01-01), Traylor
patent: 5240029 (1993-08-01), Ludewig
patent: 5305778 (1994-04-01), Traylor
patent: 5678592 (1997-10-01), Boticki et al.

Affiliated with

Also associated with

Rating

Non-educting back flow prevention device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-educting back flow prevention device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-educting back flow prevention device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1140673