Abstract: The cover or cap of a conventional pressure type flush valve is removed and a container is screwed onto the flush valve whereupon the cover or cap is then screwed onto the upper end of the container. A fine screen at the base of the container retains a granular or power type disinfectant, preferably in a bag, and a small tube is secured to the by-pass valve of the flush valve diaphragm and extends upwardly through the screen to adjacent the upper end of the container. The existing adjusting screw is removed and a longer screw screw-threadably engages the cover and extends downwardly through the container to control the action of the valve diaphragm. Each time the valve is actuated, the container evacuates carrying with it dissolved disinfectant which mixes with the water under pressure passing into the toilet or urinal.

Abstract: A container is detachably secured to the overflow pipe in a toilet tank and holds soluble disinfectant. A tube connected to the water inlet valve branch normally connected to the overflow pipe of the tank with the inlet valve and the outlet of the tube being controlled by the float valve. This tube includes a T-fitting, one leg of which extends downwardly through the cover of the container to adjacent the base. The other leg extends to the overflow pipe for restoring the water seal in the bowl after flushing. A venturi in the T-fitting extracts water containing dissolved disinfectant from the container, when a toilet is flushed, thus adding disinfectant to the bowl and to the water seal. A further T-fitting is provided in the tube upstream of the first T-fitting and is situated above the water level in the tank in order firstly, to act as a siphon breaker and secondly, to divert some of the water flowing to the overflow after flushing and during filling of the tank when the water inlet is open.

Abstract: Dispensers for chemicals usually have ball check valves and other moving parts which often corrode due to the action of the chemical. Other types may eliminate the moving parts, but have to be re-charged each time they are used. This device consists of a container having a water inlet and a water outlet at the under end. A U-shaped tube depends within the container and is secured to the inlet and outlet means is provided with a plurality of small holes to allow some of the water to enter a container. An outlet branch is secured within the container, to the outlet means and water is picked up from the container by the outlet branch and joins the mainstream of water passing through the U-shaped tube. Chemical in a fabric bag is placed in the container and dissolves in the water in the container and is picked by the outlet tube.