Dual stage filter cartridge for a reverse osmosis purification s

Details Dual stage filter cartridge for a reverse osmosis purification s Dual stage filter cartridge for a reverse osmosis purification s

1989-10-13

1991-08-06

Silverman, Stanley

Liquid purification or separation

With repair or assembling means

2102572, 210266, 210282, 210314, 210317, C02F 144, B01D 6108

Patent

active

050375474

ABSTRACT:
A dual stage filter cartridge is provided for use in a reverse osmosis water purification system or the like. The filter cartridge includes a first stage having a filter medium for removing selected contaminants from incoming feed water, and a second stage including a reverse osmosis membrane for converting a portion of the filtered feed water to a relatively purified water supply. The filter media in the first state is particularly selected to remove contaminants which are otherwise potentially harmful to the reverse osmosis membrane. The dual stage cartridge is configured as a single unit adapted for simple drop-in installation into an open-ended cartridge housing.

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