Air gap eductor

Details Air gap eductor Air gap eductor

1997-02-20

1999-01-26

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137888, E03C 110

Patent

active

058628290

ABSTRACT:
A three-piece air gap eductor includes a molded body having air gap, discharge and venturi sections, a nozzle and a spray shield extending about the venturi section entry to constrain turbulence and reduce backsplash and spray exiting the air gap chamber. A water stream engaging the outer-driven venturi is smoothly divided into respective venturi and bypass streams, with the frustoconical shield capturing turbulent water outside the venturi in a water sheet moving toward a discharge. An improved shield is frustoconically shaped, has an internal reflection shoulder and external moister collecting bars to enhance mist and spray reduction in the air gap section. A V-shaped recess in the shield facilitates its emplacement about the venturi section. The molded body is stiffened to avoid functional misalignment of the water stream between the nozzle and the venturi.

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