G - Physics – 01 – F
Patent
G - Physics
01
F
73/136
G01F 7/00 (2006.01)
Patent
CA 1175256
Abstract of the Disclosure A compound liquid flow meter comprises a casing which is open along one side and has at one end an inlet adapted for connection to a supply conduit and at its opposite end an out- let adapted for connection to a discharge conduit, A cover closes the open side of the casing and a main flow path is provided through the casing including a turbine meter supported by the cover and having a characteristic of accuracy over a first range of flow rates greater than a predetermined rate and of rapid acceleration in response to increasing flow; and a main valve controlling the flow through the turbine meter; an auxiliary flow path extends from the inlet to the outlet and includes a low flow measuring meter supported by the cover and having a characteristic of accuracy over a second range of flow rates lower than and overlapping said first range of flow rates; an auxiliary valve supported by the cover and controlling the flow through said low flow meter; wherein the improvement comprises a transverse wall in the casing between the inlet and the outlet, said wall having an aperture therein; spring means biasing the main valve to closed position; means supporting said main valve and said spring means on the down- stream side of the wall so that the main valve controls the flow through the aperture, a transverse wall in the cover abutting the transverse wall in the casing, said cover trans- verse wall having an aperture therethrough forming part of said auxiliary flow path; and means sealing the downstream end of the turbine meter to the upstream side of the wall at the periphery of the aperture.
395687
Harris Rodney G.
Karjalainen William G.
Kullmann Donald J.
G. Ronald Bell & Associates
Neptune Water Meter Company
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