Bypass valve with flapper valve elements for a water treatment apparatus
First Claim
1. A bypass valve for a water treatment system comprising:
- a body having a primary inlet for receiving untreated water, an untreated water outlet for connection to the water treatment system, a treated water inlet for connection to the water treatment system, and a primary outlet through which treated water flows, the body including a first valve seat between the primary inlet and the untreated water outlet, a second valve seat between the treated water inlet and the primary outlet, and a third valve seat in a flow path between the primary inlet and the primary outlet, wherein the first valve seat, the second valve seat, and the third valve seat respectively surround a first aperture, a second aperture, and a third aperture extending through at least one wall of the body, wherein the first and second valve seats are located in a first plane, and the third valve seat is in a second plane spaced from and parallel to the first plane;
a first flapper valve element movable with respect to the body to selectively engage and disengage the first valve seat;
a second flapper valve element movable with respect to the body to selectively engage and disengage the second valve seat; and
a third flapper valve element movable with respect to the body to selectively engage and disengage the third valve seat;
wherein the bypass valve has a first state in which the first flapper valve element engages the first valve seat, the second flapper valve element engages the second valve seat, and the third flapper valve element is disengaged from the third valve seat, which first state blocks all fluid flow from the primary inlet into the water treatment system, and has a second state in which the first flapper valve element is disengaged from the first valve seat, the second flapper valve element is disengaged from the second valve seat, and the third flapper valve element engages the third valve seat.
3 Assignments
0 Petitions
Accused Products
Abstract
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 inlet and the outlet, a second valve seat between the treated water inlet and the outlet, and a third valve seat in a flow path between the inlet and the outlet. A set of first, second and third flapper valve elements selectively engage and disengage the first, second and third valve seats respectively. The three flapper valve elements are preferably connected to a common manually operable actuator which can be latched to hold the valve elements in different functional positions.
17 Citations
20 Claims
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1. A bypass valve for a water treatment system comprising:
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a body having a primary inlet for receiving untreated water, an untreated water outlet for connection to the water treatment system, a treated water inlet for connection to the water treatment system, and a primary outlet through which treated water flows, the body including a first valve seat between the primary inlet and the untreated water outlet, a second valve seat between the treated water inlet and the primary outlet, and a third valve seat in a flow path between the primary inlet and the primary outlet, wherein the first valve seat, the second valve seat, and the third valve seat respectively surround a first aperture, a second aperture, and a third aperture extending through at least one wall of the body, wherein the first and second valve seats are located in a first plane, and the third valve seat is in a second plane spaced from and parallel to the first plane; a first flapper valve element movable with respect to the body to selectively engage and disengage the first valve seat; a second flapper valve element movable with respect to the body to selectively engage and disengage the second valve seat; and a third flapper valve element movable with respect to the body to selectively engage and disengage the third valve seat; wherein the bypass valve has a first state in which the first flapper valve element engages the first valve seat, the second flapper valve element engages the second valve seat, and the third flapper valve element is disengaged from the third valve seat, which first state blocks all fluid flow from the primary inlet into the water treatment system, and has a second state in which the first flapper valve element is disengaged from the first valve seat, the second flapper valve element is disengaged from the second valve seat, and the third flapper valve element engages the third valve seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. A bypass valve for a water treatment system comprising:
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a body having a primary inlet for receiving untreated water, an untreated water outlet, a treated water inlet and a primary outlet through which treated water flows, the body including a first valve seat between the primary inlet and the primary outlet, a second valve seat between the treated water inlet and the primary outlet, and a third valve seat in a flow path between the primary inlet and the primary outlet, the body further having aligned first, second, and third valve openings, wherein the first valve seat, the second valve seat, and the third valve seat respectively surround a first aperture, a second aperture, and a third aperture extending through at least one wall of the body; a first flapper valve element pivotally received with in the first valve opening and selectively engaging and disengaging the first valve seat; a second flapper valve element pivotally received with in the second valve opening and selectively engaging and disengaging the second valve seat; and a third flapper valve element pivotally received with in the third valve opening and selectively engaging and disengaging the third valve seat; wherein each of the first, second and third flapper valve elements comprises a plate, a resilient valve seal attached to a section of the plate for selectively engaging and disengaging a respective one of the first, second and third valve seats, and a flange of resilient material projecting outwardly from the plate and abutting the body. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
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Specification