Bypass valve with flapper valve elements for a water treatment apparatus

• US 20070181194A1
• Filed: 02/08/2006
• Published: 08/09/2007
• Est. Priority Date: 02/08/2006
• Status: Active Grant

• Current Assignee: Pentair Residential Filtration LLC (Pentair Plc (Ireland))
• Original Assignee: Pentair Residential Filtration LLC (Pentair Plc (Ireland))
• Inventors: Honzelka, Thomas, Sieth, Ken
• Granted Patent: US 7,568,501 B2
• Time in Patent Office: Days
• US Class Current: 137/597
• CPC Class Codes: F16K 1/18 with pivoted discs or flaps
• CPC Class Codes: F16K 11/052 with pivoted closure members, e.g. butterfly valves
• CPC Class Codes: F16K 35/14 interlocking two or more valves
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet
• CPC Class Codes: Y10T 137/8737 Water treatment feature
• CPC Class Codes: Y10T 137/8745 Including rigid plate with flexible or resilient seal

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.

Claims

1. A bypass valve for a water treatment system comprising:

a body having an inlet for receiving untreated water, an untreated water outlet, a treated water inlet and an outlet through which treated water flows, the body including a first valve seat between the inlet and the untreated water 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 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.

2. The bypass valve as recited in claim 1 further comprising an actuator connected to and simultaneously moving the first, second, and third flapper valve elements.

3. The bypass valve as recited in claim 2 wherein the actuator has a first position 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;

and has a second position 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.

4. The bypass valve as recited in claim 1 further comprising a latch assembly that selectively holds the first, second, and third flapper valve elements in at least one of engagement and disengagement with a respective one of the first, second, and third valve seats.

5. The bypass valve as recited in claim 1 wherein the body further comprises a drain inlet for receiving waste water produced in a water treatment apparatus and a drain outlet in fluid communication with the drain inlet.

6. The bypass valve as recited in claim 1 wherein the body comprises:

a manifold having an open side and containing the inlet, the outlet, the untreated water outlet, and the treated water inlet; and

a base attached to the manifold and closing the open side.

7. The bypass valve as recited in claim 6 wherein the manifold further includes the first, second, and third valve seats.

8. The bypass valve as recited in claim 6 wherein the first, second, and third flapper valve elements are pivotally mounted to the manifold.

9. The bypass valve as recited in claim 1 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, and a flange of resilient material projecting outwardly from the plate.

10. The bypass valve as recited in claim 1 wherein the first and second valve seats are located in a common plane, and the third valve seat is spaced from that common plane.

11. A bypass valve for a water treatment system comprising:

a body having an inlet for receiving untreated water, an untreated water outlet, a treated water inlet and an outlet through which treated water flows, the body including 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, the body further having aligned first, second, and third valve openings;

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.

12. The bypass valve as recited in claim 11 further comprising a manually operated actuator connected to and simultaneously pivoting the first, second, and third flapper valve elements.

13. The bypass valve as recited in claim 12 wherein the actuator has a first position 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 disengages the third valve seat;

and has a second position in which the first flapper valve element disengages the first valve seat, the second flapper valve element disengages the second valve seat, and the third flapper valve element engages the third valve seat.

14. The bypass valve as recited in claim 13 further comprising a latch that selectively holds the actuator in the first and second positions.

15. The bypass valve as recited in claim 14 wherein the latch is a C-shaped rod having ends that engage the body.

16. The bypass valve as recited in claim 14 wherein:

the actuator has a first groove and a second groove; and

the latch engages the first groove in the first position and engages the second groove in the second position.

17. The bypass valve as recited in claim 11 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, and a flange of resilient material projecting outwardly from the plate.

18. The bypass valve as recited in claim 17 further comprising a valve retainer attached to the body and holding the flanges of the first, second, and third flapper valve elements, respectively, in the first, second, and third valve openings.

19. The bypass valve as recited in claim 11 wherein the body comprises:

a manifold have an open side, and containing the inlet, the outlet, the untreated water outlet, the treated water inlet; and

a base attached to the manifold and closing the open side.

20. The bypass valve as recited in claim 19 wherein the manifold further includes the first, second, and third valve seats.