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| Number | Title | Issue Date |
| 7568501 | Bypass valve with flapper valve elements for a water treatment apparatus A bypass valve has a body with an inlet for receiving untreated water, an untreated water outlet for connection to a water treatment apparatus, a treated water inlet and an outlet through which treated water flows. The body includes a first valve seat between the in... | 08/04/2009 |
| 7261127 | Modified push-pull valve for filter systems and method A valve assembly is constructed for use in a filtering system including a pump and a filter with an inlet and an outlet, for example those systems used in conjunction with swimming pools. The assembly includes a valve body with a pump inlet, a filtered output, a was... | 08/28/2007 |
| 7121293 | Tri valve backflow preventer A tri valve backflow preventer having parts and materials preferably consisting of steel nuts and bolts, ductile iron operating nuts, nitrile rubber O-rings, nitrile rubber gaskets, manganese bronze valve adjusting stems, valve wedge gates made of ductile iron encap... | 10/17/2006 |
| 6680026 | Fluid flow diverters and diversion methods and water purification equipment including such diverters "Plug-in" fluid flow diverters are disclosed. Additionally disclosed is water purification equipment adapted to communicate with the diverters. Such equipment is especially (although not solely) useful in connection with circulating streams of water prese... | 01/20/2004 |
| 6357477 | Bypass assembly incorporating double street t-fitting and method of making the same A bypass assembly is provided for bypassing a water softener. The bypass assembly includes a bypass valve, a shut off valve at the input to the water softener, and a shut off valve at the output of the water softener. The shut off valves are positioned be... | 03/19/2002 |
| 6347644 | Bypass valve for water treatment system A water treatment system bypass valve assembly that includes a unique multi-functional auxiliary port. The auxiliary port may be fitted with a check valve that relieves vacuum drawn on the water treatment system to which the bypass assembly is connected, ... | 02/19/2002 |
| 6293298 | Water softener valve A water softener valve for controlling water flow to and from a water softener is disclosed that includes a cylindrical shaft extending from said inner surface of a piston chamber that fits into a pressure relief port when the piston is in the service pos... | 09/25/2001 |
| 5628899 | Control mechanism for controlling regeneration of two water treatment tanks A control mechanism for a liquid treatment system including a first tank having an inlet and an outlet and a second tank having an inlet and an outlet. The control mechanism includes an inlet passage for receiving liquid to be treated and an outlet passag... | 05/13/1997 |
| 5341834 | Multiport valve for fluid transfer systems A multiport valve for a water transfer system passes water, drawn by a pump, through a plurality of collectors. A programmable controller controls operation of the pump and a stepper motor which positions the multiport valve in a time series sequence acco... | 08/30/1994 |
| 5273070 | Water treatment apparatus Water treatment apparatus having a raw water inlet and a treated water outlet and at least a first and second water treatment tank plus conduit means for passing water from the inlet to the outlet through the first and second tanks in parallel flow relati... | 12/28/1993 |
| 5174337 | Water conditioner rotary valve A water conditioner rotary valve for use in a water conditioning system includes a valve body constructed of an upper section, a lower section and a middle section, to facilitate ease in assembly of the body. The valve rotor member of the conditioner valv... | 12/29/1992 |
| 5045187 | Regeneration system for water conditioners such as water softeners A regenerating control system for liquid conditioners includes ball valves positioned and sized so that they do not cause any flow restriction during the normal operation of the conditioner. The valves are operated by low voltage D.C. motors which require... | 09/03/1991 |
| 4921598 | Selector valve, especially a central control valve for a water treatment device A central control valve arrangement for a water treatment system. The central control valve arrangement includes two independently positionable four-way ball valves and at least one of the balls of the ball valve serving as valve body includes with two L-... | 05/01/1990 |
| 4290451 | Water conditioning system controls This invention relates to the controls for a water conditioning system with an operating valve having a simplified drive mechanism and a brine valve made from plastic materials and readily assembled for adaptability to softener systems of various sizes an... | 09/22/1981 |
| 4210533 | Remote control valve for reverse osmosis water purifier A remote control valve which regulates a reverse osmosis water purifier with only fluid connections between the control valve and the water purifier, no mechanical, electrical, or other such connections, being necessary. The control valve includes: a valv... | 07/01/1980 |
| 3951802 | Water softener A water softener has a salt container with an inlet duct which can be connected to a source of water to be softened, through a valve unit, and at least two outlet ducts each one of which is connected to the inlet duct of one of the softener containers thr... | 04/20/1976 |
