Chlorination module for cartridge filter unit

An integrated liquid filter and chemical dispenser comprising:

• a filter housing having a liquid inlet thereto and a liquid outlet;
• a cylindrical, axially hollow, radial flow filter assembly in the housing;
• flow directing means for defining a liquid flow path in the housing from the inlet to the outlet, the flow path comprising first and second flow passages arranged in parallel flow relation, the first passage being radially through the filter and the second passage being into the filter interior other than through the filter;
• and
• a chemical dispenser disposed along the second passage essentially wholly within the axial extent of the interior of the filter and having liquid ingress and egress means to and from a chamber therein in which a chemical to be dispensed can be placed for addition to a liquid flowing into and out of the chamber.

A water filter assembly for use with spas and the like having a molded deck defining a well therein, the assembly comprising:

• a cylindrical housing having an open upper end and inlet and outlet water flow openings at its lower end in association with means for directing at least a portion of water entering the inlet opening to the outer portions of a filter chamber within the housing and for routing water from a central part of the filter chamber to the outlet opening;
• means in the chamber for supporting in a selected position an elongate, axially hollow filter cartirdge for flow of water therethrough from the outer portions of the filter chamber to the central part thereof;
• means defined by and cooperable with an outer portion of the housing proximate its upper end for mounting the housing in an opening in a spa deck well;
• a housing closure member removably and sealably coupleable to the upper end of the housing;
• the housing, filter cartridge and closure member being cooperatively defined for flow of some water from the outer portions of the filter chamber to a cavity defined in a chlorinator assembly carried by the closure member to be disposed in the axial hollow of the cartridge upon coupling of the closure member to the housing and including water flow means for directing water to the cartridge axial hollow via a chlorination chamber in the chlorination assembly in which a quantity of soluble chlorination ion source material can be placed.