Catch flow restrictor with opening calibrated to flow and head c

Details Catch flow restrictor with opening calibrated to flow and head c Catch flow restrictor with opening calibrated to flow and head c

1990-02-05

1991-07-16

Dawson, Robert A.

Liquid purification or separation

Structural installation

Grated inlet surface drain

138 45, 210164, 404 4, 405127, F15D 100

Patent

active

050322648

ABSTRACT:
A catch flow restrictor plate to control surcharging of water in a sewer system. The restrictor plate is to be placed in a catch basin and consists of a tray, which comprises an upper edge, downwardly sloping walls descending from the upper edge, the walls merging into a central portion. The central portion has a plurality of concentric calibration lines formed therein enabling to form an opening of a selected size by removing part of the central portion along a selected calibration line. A plurality of vertical fins are provided that radially extend from the central portion to the upper edge. The upper edge is arranged to hold the tray within a frame of the catch basin.

REFERENCES:
patent: 1363792 (1920-12-01), Johnston
patent: 2432082 (1947-12-01), Bilyeu
patent: 3469698 (1969-09-01), Blendermann
patent: 3666104 (1972-05-01), Aprill, Jr. et al.
patent: 4522533 (1985-06-01), Campbell et al.

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