Abstract: A cartridge dispenser having a rotatable sleeve for alerting a person as to when a cartridge dispenser should be replaced based on when the cartridge dispenser is placed in a body of water with the cartridge replacement date carried forward on the cartridge dispenser.

Abstract: A floating dispenser having an external float or an internal float for supporting a cartridge or cartridges for floatingly delivering a dispersant or dispersants to a body of water with the floating dispenser having cartridges rotationally positionable with respect to one another to control the rate of dispensing while the dispenser floats in an upright condition with the floating dispenser changing its flotation orientation in response to consumption of the dispersant or dispersants in the a cartridge to thereby provide a visual alert to replace a spent cartridge with a fresh cartridge. In addition the inventions described herein permit changing the dispensing nature of the system from a multiple dispensing system to a single dispensing system without changing the floating characteristics of the floating dispensers through replacement of a dispersant in one of the cartridges with an inert or ballast material that has no effect on the water characteristics.

Abstract: A method and dispenser for maintaining a body of water in a swimming pool free of algae with the dispenser water mateable to a surface within a pool pump basket to deliver at least one dispersant to the pool water flowing through the pool pump basket.

Abstract: A method of maintaining a safe free chlorine level in a body of water for recreational use where the free chlorine level at a harmful level comprises determining if the free chlorine level in the body of water is above a safe level and adding sufficient DMH to the body of water to bring the free chlorine down to a safe level.

Abstract: A cartridge dispenser having a rotatable sleeve for alerting a person as to when a cartridge dispenser should be replaced based on when the cartridge dispenser is placed in a body of water with the cartridge replacement date carried forward on the cartridge dispenser.

Abstract: A dispenser securable in a hostile environment of a body of recreational water with the dispenser having a dispersant chamber with a dispersant therein isolated from the hostile water environment proximate the dispenser to enable dispenser placement in various locations within the body of recreational water without adversely affecting a dispenser dispersant rate.

Abstract: An inline filterwell system with a floating weir that delivers a dispersant into the water in an inline filterwell where a cartridge dispenser dispersant rate of a cartridge dispenser located in a cartridge jacket of the weir is isolated from changes in the velocity of water flowing through an open body of the weir.

Abstract: A filterwell cartridge having ports for dispensing a dispersant directly into a filterwell of a hot tub, spa or the like with the filterwell cartridge peripherally and postionally supportable in a quick release mode through facial engagement of compound surfaces located on opposite sides of the filterwell cartridge.

Abstract: A method of maintaining a safe free chlorine level in a body of water for recreational use where the free chlorine level at a harmful level comprises determining if the free chlorine level in the body of water is above a safe level and adding sufficient DMH to the body of water to bring the free chlorine down to a safe level.

Abstract: A dispensing system comprising a housing supporting a first cartridge and a second dispensing cartridge where the first cartridge is positionable in a first compartment of the housing but not in a second compartment of the housing to prevent a change in an axial position of the first cartridge and the second dispensing when a cartridge is replaced in the housing.

Abstract: An inline dispensing system having a collar engageable with an inline well to support an inline cap thereon and for directing a cartridge carrier into a sealing relation therewith as a cartridge carrier is inserted into an inline well in a container of a body of recreational water.

Abstract: A floating dispenser holder having a platform supporting a dispensing cartridge in a dispensing condition and a canopy extending over the dispensing cartridge located on the platform.

Abstract: A method of maintaining a safe free chlorine level in a body of water for recreational use where the free chlorine level at a harmful level comprises determining if the free chlorine level in the body of water is above a safe level and adding sufficient DMH to the body of water to bring the free chlorine down to a safe level.

Abstract: A multi-stage floatation dispenser for carrying a ballast, which may be a non-water consumable dispersant and at least one water consumable dispersant wherein the weight of the water consumable dispersant decreases as the water consumable dispersant is consumed with the weight of water consumable dispersant and the non-water consumable coordinated with the flotation capacity of a flotation dispenser to provide for either a two stage or a three stage dispensing mode.

Abstract: A method and dispenser for maintaining a body of water in a swimming pool free of algae with the dispenser water mateable to a surface within a pool pump basket to deliver at least one dispersant to the pool water flowing through the pool pump basket

Abstract: A filter well mountable dispenser holder securable within a hot tub filter well with the dispenser holder supporting replaceable dispersant containing dispensing cartridges positionable within a circulating flow of water through the filter well to thereby release dispersants therefrom without preventing the circulating flow of water from passing through the filter media proximate the dispensing cartridges.

Abstract: An inline dispersal valve that can be used with or without a base. One embodiment includes a rotatable member that is rotatable from a fluid stream obstructing condition to an out-of-the-way condition to prevent fluid diversion into the dispersal valve. Another embodiment includes a lever handle for quickly setting the amount of fluid being diverted into the inline dispersal valve. Another embodiment includes an indicator that can be viewed from a position above the inline dispersal valve. Another embodiment includes a cap that can be secured or removed without the aid of tools. Another embodiment includes a clip that allows one to disassemble the inline dispersal valve for servicing. Another embodiment includes a dispensing valve that can be reversed and still properly divert fluid into a dispersant chamber. Another embodiment includes an inline dispersal valve with a bleed valve positioned to allow one to bring the air volume in the dispersant chamber to the proper level.

Abstract: A system for limiting the flow from a dispensing valve when a dispensing cartridge is replaced with the system including a dispenser cartridge with a cam and a water socket with a flow limiter therein that is activeable in response to the position of the dispenser cartridge in the dispensing valve and operable in response to an upstream fluid pressure in the dispensing valve.