Chemical eductor with integral elongated air gap

Details Chemical eductor with integral elongated air gap Chemical eductor with integral elongated air gap

1995-06-26

1996-06-04

Nilson, Robert G.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137888, B01F 504

Patent

active

055224199

ABSTRACT:
An improved venturi eductor for proportional dispensing of chemicals into flowing water includes a large anti-siphoning air gap section. The air gap section includes an outer wall and an inner wall with a gap between the walls. Both walls include offset vents or windows that provide an indirect path from the center of the air gap to the exterior of the eductor. The eductor is made from several molded parts that may be assembled without requiring machining. Further, eductor has a unique spray shield design that more effectively controls water splash in the eductor section and simplifies assembly.

REFERENCES:
patent: 4697610 (1987-10-01), Bricker
patent: 5159958 (1992-11-01), Sand
patent: 5253677 (1993-10-01), Sand

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