Electronic flush valve system for tankless water fixtures

1. An electronic flush valve system for tankless water fixtures, comprising:

a valve housing; and

a replaceable flush valve module removably secured within the valve housing;

the flush valve module is comprised of an independent, self-contained flush valve configured as a replaceable flush valve cartridge;

an inlet member associated with the valve housing that has a gate that controls flow of upstream water into the flush valve cartridge;

an enclosure mechanism that moves from an open to closed position to engage with the gate to close-shut the gate to shut-off upstream water flow into the flush valve cartridge, and moves from the closed position to the open position to disengage from the gate to enable gate to open to allow upstream water flow into the flush valve cartridge;

the enclosure mechanism is moved from the open to the closed position as the flush valve cartridge is removed, and is moved from the closed to the open position as the flush valve cartridge is secured within the valve housing.

2. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

an upper outer surface of valve housing includes a set, of indexing flanges that indicate the final, proper resting position of the flush valve cartridge inside the main body.

3. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

the upper outer surface of valve housing, near receiver opening further includes lateral openings for fasteners to secure a cover onto main body of valve housing.

4. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

an upper interior surface of valve housing, near receiver opening has an inner diameter that is threaded for securing a retainer-adapter.

5. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

a plurality of distinct flanges with different lengths projecting from an interior wall of valve housing, generally perpendicular a central longitudinal axis of the valve housing, forming plurality of ledges that provide a seat for the closure mechanism.

6. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

integral with an interior of valve body is a latch housing for a latch mechanism.

7. The electronic flush valve system for tankless water fixtures as set forth in claim 6 , wherein:

the latch mechanism latches the closure mechanism in both closed and open positions of the closure mechanism.

8. The electronic flush valve system for tankless water fixtures as set forth in claim 6 , wherein:

the latch mechanism is comprised, of a biasing mechanism and an engagement member actuated by the biasing mechanism to engage closure mechanism at both closed and open positions of the closure mechanism.

9. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

the combined main body and flush valve cartridge define a control chamber, a hold chamber, a solenoid chamber, an upper discharge chamber, a lower discharge chamber, and an outlet.

10. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

the inlet member has an egress opening that includes the gate that is biased closed, but opens when a force of upstream water flowing into inlet member is greater than a biasing force that maintains, the gate closed.

11. The electronic flush valve system for tankless water fixtures as set forth in claim 1 , wherein:

the closure mechanism is comprised of:

an engagement portion that engages the gate, maintaining the gate at the biased closed position to thereby maintain closed the egress opening.

12. The electronic flush valve system for tankless water fixtures as set forth in claim 11 , wherein

the engagement portion of the closure mechanism disengages the gate when the removable flush valve cartridge is fully inserted into valve housing, with upstream water pressure pushing gate from closed to open position.

13. The electronic flush valve system for tankless water fixtures as set forth in claim 12 , wherein

the closure mechanism further includes a first relief-opening for engagement with the latch mechanism to maintain the closure mechanism at an open position, and a second relief-opening for engagement with the latch mechanism to maintain the closure mechanism at a closed position.