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Chemical feeder for water softeners

  • US 4,003,710 A
  • Filed: 01/17/1975
  • Issued: 01/18/1977
  • Est. Priority Date: 02/01/1974
  • Status: Expired due to Term
First Claim
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1. A regenerative chemical system including a substantially vertical closed container, a substantially horizontal perforated wall member dividing said container into an upper first chamber adapted to contain a solid regenerative chemical and a lower second chamber adapted to contain a liquid solution of said chemical and to allow liquid communication between said first and second chambers, said second chamber defining a bottom wall therein, said bottom wall including a vent in communication with the atmosphere;

  • flexible diaphragm disposed in said second chamber between said bottom wall and said perforated wall member, said diaphragm and said perforated wall member cooperating to define a variable effective storage volume therebetween;

    liquid inlet-outlet in said container in communication with said effective storage volume and adapted to be connected to a source of inlet liquid and adapted for removal of said liquid solution whereby said flexible diaphragm is adapted to flex in response to addition or withdrawal of said liquid solution from said container to vary the variable effective storage volume of said container.

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