Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1973-12-12
1976-01-06
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
B01D 1700
Patent
active
039309991
ABSTRACT:
Sewage sludge of a uniformly high solids content is pumped from a primary settling tank to a digester or thickener by an air operated spring assisted diaphragm pump.
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patent: 2932552 (1960-04-01), Weiss et al.
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patent: 3600305 (1971-08-01), Edgerton
patent: 3785969 (1974-01-01), Molls et al.
patent: 3816034 (1974-06-01), Rosenquest, Jr.
Calvetti F. F.
Dorr-Oliver Incorporated
Hart Charles N.
Jablon Theodore M.
Kearns Burtsell J.
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