Sewer check valve and cleanout apparatus

Details Sewer check valve and cleanout apparatus Sewer check valve and cleanout apparatus

1992-11-16

1993-08-10

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

137315, 137527, 1375278, F16K 1503, F16K 4300

Patent

active

052340180

ABSTRACT:
Sewer check valve and cleanout apparatus including a valve body, substantially inverted-T in shape, said valve body provided with a horizontal conduit and an upright external riser; an internal riser receivable within the external riser; and a flapper. The horizontal conduit of the valve body is provided with opposing end hubs for attachment to existing sewer and drainage lines and is provided, on its upstream portion with an annular valve seat about the conduit. The flapper is pivotally attached to the lowermost end of the internal riser to sealingly engage the valve seat. The internal riser, with flapper, are readily accessible for maintenance or replacement by a simple retraction of the internal riser from the external riser. The internal riser is provided with a curved bore, cooperating with a curved bore in the external riser for directing cleanout cables downstream and away from the flapper valve.

REFERENCES:
patent: 174857 (1876-03-01), Rodermond
patent: 1103043 (1914-07-01), Grueninger
patent: 1553940 (1925-09-01), Kangieser
patent: 1577637 (1926-03-01), Hess
patent: 1710410 (1929-04-01), Defenbaugh
patent: 1722891 (1929-07-01), Boosey
patent: 2390108 (1945-12-01), Langdon
patent: 2578076 (1951-12-01), Kirby
patent: 4054153 (1977-10-01), Guyton
patent: 4508139 (1985-04-01), Teumer
patent: 5004010 (1991-04-01), Huet

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