Suction fitting with pump control device

Baths – closets – sinks – and spittoons – Tubs – Means for agitating or circulating water in a tub

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4509, E04H 412

Patent

active

051670410

ABSTRACT:
A suction fitting for use in a water circulation system in which operation of a circulating pump is controlled to prevent damage to equipment and property and also to minimize the possibility of serious personal injury or death. The suction fitting includes a suction line connected to the pump, for circulating water in the tub or spa back through jets in the tub or spa, a pressure sensor line connecting the water in the tub or spa to a water level sensor, and one or more slots for water communication between the pressure sensor line and the suction line. When flow into the suction fitting is blocked, water is drawn out of the pressure sensor line and through the slots to the suction line, to permit detection of the blockage in the level sensor. The combination of the suction fitting, the pump and the water level sensor turn off the pump when the suction fitting is blocked or when the water level in the tub or spa is too high or too low.

REFERENCES:
patent: 3759286 (1973-09-01), Page
patent: 4169293 (1979-10-01), Weaver
patent: 4265598 (1981-05-01), Brand
patent: 4402094 (1983-09-01), Sanders
patent: 4602391 (1986-07-01), Shepherd
patent: 4620835 (1986-11-01), Bell
patent: 4742456 (1988-05-01), Kamena
patent: 4817217 (1989-04-01), Lively
patent: 4901962 (1990-02-01), Klotzbach

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