Control valve for a fluid treatment system
First Claim
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1. A control valve assembly for a fluid treatment system comprising:
- a valve housing defining a plurality of compartments;
a piston assembly associated with each of said compartments, each of said piston assemblies configured to be independently movable in each of said compartments; and
a gearbox associated with said housing and including a plurality of cams driven by a motor, each of said cams being configured to drive a corresponding one of said piston assemblies.
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Abstract
A control valve assembly for a fluid treatment system including a valve housing defining a plurality of compartments and a piston assembly associated with each of the compartments. Each of the piston assemblies is configured to be independently movable in each of the compartments. The control valve assembly also includes a gearbox that is associated with the housing and includes a plurality of cams driven by a motor, where each of the cams is configured to drive a corresponding one of the piston assemblies.
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Citations
20 Claims
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1. A control valve assembly for a fluid treatment system comprising:
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a valve housing defining a plurality of compartments; a piston assembly associated with each of said compartments, each of said piston assemblies configured to be independently movable in each of said compartments; and a gearbox associated with said housing and including a plurality of cams driven by a motor, each of said cams being configured to drive a corresponding one of said piston assemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A control valve assembly for a fluid treatment system comprising:
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a valve housing having a plurality of piston assemblies, each of said piston assemblies including a piston, at least one sealing member engaging said piston, and a biasing member; a motor having a drive shaft; a gearbox including a plurality of cams and at least one position feedback gear driven by said drive shaft, each of said cams being constructed and arranged for driving a corresponding one of said pistons, said gearbox further including a sensor configured for optically interacting with said position feedback gear to communicate a status of the fluid treatment system to a controller. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A control valve assembly for a fluid treatment system comprising:
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a valve housing having a plurality of piston assemblies, each of said piston assemblies including a piston and a nodule extending from a top edge of said piston; and a gearbox including a plurality of cams each having an upper peripheral edge, the cams being driven by a motor, each of said nodules constructed and arranged for travel along a corresponding one of said peripheral edges for opening and closing a respective flow path within said valve housing. - View Dependent Claims (19, 20)
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Specification