Testing device and system for a backflow preventer

1. A testing device for a backflow preventer assembly comprising:

a plurality of automated valves, wherein each automated valve is coupled to a corresponding test valve of the backflow preventer assembly;

a high side diverter array coupled to at least one of the plurality of automated valves;

a low side diverter array coupled to at least one of the plurality of automated valves;

a vent side diverter array coupled to at least one of the plurality of automated valves;

a pressure differential transmitter coupled to the high side diverter array and the low side diverter array;

a high side bleed solenoid coupled to a high side of the pressure differential transmitter;

a low side bleed solenoid coupled to a low side of the pressure differential transmitter;

a vent side bleed solenoid coupled to a vent side diverter array;

a plurality of bypass solenoids coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid; and

a first sensor coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid.

2. The testing device for a backflow preventer assembly in accordance With claim 1 , comprising a second sensor coupled to the backflow preventer assembly.

3. The testing device for a backflow preventer assembly in accordance with claim 1 , comprising a high side pressure transmitter coupled to the high side of the pressure differential transmitter.

4. The testing device for a backflow preventer assembly in accordance with claim 1 , comprising a controller controlling operation of the testing device.

5. The testing device for a backflow preventer assembly in accordance with claim 1 , wherein the plurality of automated valves comprises:

a first automated valve coupled to a first test valve of the backflow preventer assembly;

a second automated valve coupled to a second test valve of the backflow preventer assembly;

a third automated valve coupled to a third test valve of the backflow preventer assembly; and

a fourth automated valve coupled to a fourth test valve of the backflow prevent assembly.

6. The testing device for a backflow preventer assembly in accordance with claim 1 , wherein the high side diverter array comprises a pair of high side diverter valves.

7. The testing device for a backflow preventer assembly in accordance with claim 5 , wherein the high side diverter array comprises:

a first high side diverter coupled to the second automated valve; and

a second high side diverter coupled to the third automated valve.

8. The testing device for a backflow preventer assembly in accordance with claim 5 , wherein the low side diverter array comprises:

a first low side diverter coupled to the second automated valve; and

a second low side diverter coupled to the third automated valve.

9. The testing device for a backflow preventer assembly in accordance with claim 5 , wherein the vent side diverter array comprises:

a first vent side diverter coupled to the first automated valve; and

a second vent side diverter coupled to the fourth automated valve.

10. The testing device for a backflow preventer assembly in accordance with claim 1 , wherein the plurality of bypass solenoids comprises:

a first bypass solenoid coupled to the high side of the pressure differential transmitter;

a second bypass solenoid the low side of the pressure differential transmitter; and

a third bypass solenoid coupled to the first bypass solenoid, the second bypass solenoid and the vent side bleed solenoid.

11. A testing device for a backflow preventer assembly comprising:

a plurality of automated valves, wherein each automated valve is coupled to a corresponding test valve of the backflow preventer assembly;

a high side diverter array coupled to at least one of the plurality of automated valves;

a low side diverter array coupled to at least one of the plurality of automated valves;

a vent side diverter array coupled to at least one of the plurality of automated valves;

a pressure differential transmitter coupled to the high side diverter array and the low side diverter array;

a high side bleed solenoid coupled to a high side of the pressure differential transmitter;

a low side bleed solenoid coupled to a low side of the pressure differential transmitter;

a vent side bleed solenoid coupled to a vent side diverter array;

a plurality of bypass solenoids coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid;

a first sensor coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid;

a second sensor coupled to the backflow preventer assembly; and

a controller controlling operation of the testing device.

12. The testing device for a backflow preventer assembly in accordance with claim 11 , comprising a high side pressure transmitter coupled to the high side of the pressure differential transmitter.

13. The testing device for a backflow preventer assembly in accordance with claim 11 , wherein the plurality of automated valves comprises:

a first automated valve coupled to a first test valve of the backflow preventer assembly;

a second automated valve coupled to a second test valve of the backflow preventer assembly;

a third automated valve coupled to a third test valve of the backflow preventer assembly; and

a fourth automated valve coupled to a fourth test valve of the backflow preventer assembly.

14. The testing device for a backflow preventer assembly in accordance with claim 13 , wherein the high side diverter array comprises:

a first high side diverter coupled to the second automated valve; and

a second high side diverter coupled to the third automated valve.

15. The testing device for a backflow preventer assembly in accordance with claim 13 , wherein the low side diverter array comprises:

a first low side diverter coupled to the second automated valve; and

a second low side diverter coupled to the third automated valve.

16. The testing device for a backflow preventer assembly in accordance with claim 13 , wherein the vent side diverter array comprises:

a first vent side diverter coupled to the first automated valve; and

a second vent side diverter coupled to the fourth automated valve.

17. The testing device for a backflow preventer assembly in accordance with claim 11 , wherein the plurality of bypass solenoids comprises:

a first bypass solenoid coupled to the high side of the pressure differential transmitter;

a second bypass solenoid the low side of the pressure differential transmitter; and

a third bypass solenoid coupled to the first bypass solenoid, the second bypass solenoid and the vent side bleed solenoid.

18. A testing device for a backflow preventer assembly comprising:

a first automated valve coupled to a first test valve of the backflow preventer assembly;

a second automated valve coupled to a second test valve of the backflow preventer assembly;

a third automated valve coupled to a third test valve of the backflow preventer assembly;

a fourth automated valve coupled to a fourth test valve of the backflow preventer assembly;

a first high side diverter coupled to the second automated valve;

a second high side diverter coupled to the third automated valve;

a first low side diverter coupled to the second automated valve;

a second low side diverter coupled to the third automated valve,

a first vent side diverter coupled to the first automated valve;

a second vent side diverter coupled to the fourth automated valve

a pressure differential transmitter coupled to the first and second high side diverters and the first and second low side diverters;

a high side pressure transmitter coupled to a high side of the pressure differential transmitter;

a high side bleed solenoid coupled to the high side of the pressure differential transmitter;

a low side bleed solenoid coupled to a low side of the pressure differential transmitter;

a vent side bleed solenoid coupled to a vent side diverter array;

a first bypass solenoid coupled to the high side of the pressure differential transmitter;

a second bypass solenoid coupled to the low side of the pressure differential transmitter;

a third bypass solenoid coupled to the first bypass solenoid, the second bypass solenoid and the vent side bleed solenoid;

a first sensor coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid;

a second sensor coupled to the backflow preventer assembly; and

a controller controlling operation of the testing device, the controller comprising:

a processor; and

a memory coupled to the processor, the memory storing program instructions that when executed by the processor, causes the processor to:

open the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid;

monitor the pressure differential transmitter, the high side pressure transmitter and the bleed valves array sensor until all reads zero “0”;

report if the bleed valves array sensor does not read zero “0”;

open the first high side diverter and close the second high side diverter if bleed valves array sensor reads zero “0”;

close the first low side diverter and open the second low side diverter;

open the first vent side diverter valve and close the second vent side diverter valve;

close a second shut-off valve of the backflow preventer;

open the second test valve and the third test valve;

bled air out through the high side bleed solenoid and the low side bleed solenoid until the bleed valves array sensor senses that the air is expelled;

close the high side bleed solenoid and the low side bleed solenoid;

open the first bypass solenoid and the third bypass solenoid until the bleed valves array sensor senses that all the air is expelled;

close the first bypass solenoid and open the second bypass solenoid until the bleed valves array sensor senses that the air is expelled;

close the second bypass solenoid and the third bypass solenoid;

open the first bypass solenoid and the third bypass solenoid;

open the fourth test valve;

monitor the bleed valves array sensor until the air is expelled;

close the vent side bleed solenoid;

monitor the pressure differential transmitter until the pressure stabilizes;

mark as “FAILED” if the pressure does not stabilize within a predetermined time frame;

mark as “PASSED” if the pressure stabilizes within the predetermined time frame; and

close the fourth test valve.

19. The testing device for a backflow preventer assembly in accordance with claim 18 , wherein the memory storing program instructions executed by the processor, causes the processor to:

test a first valve of the backflow preventer for tightness and to record a pressure drop across the first valve by closing the bypass solenoid, wherein the test of the first valve comprises:

closing the fourth test valve;

opening the vent side bleed solenoid;

opening the second bypass solenoid and the third bypass solenoid until the bleed valves array sensor senses that air is expelled; and

close the second bypass solenoid.

20. The testing, device for a backflow preventer assembly in accordance with claim 18 , wherein the memory storing program instructions executed by the processor, causes the processor to:

test operation of a relief valve of the backflow preventer, wherein the test of operation of the relief valve comprises:

dose the third bypass solenoid;

open the first bypass solenoid;

open the second bypass solenoid until a reading on the pressure differential transmitter begins to drop;

record a state of the pressure differential transmitter when the vent discharge sensor detects a change in moisture;

record a reading on the pressure differential transmitter as a “Opening Differential Pressure of the Relief Valve”;

close the second shutoff valve;

open the vent side bleed solenoid for a predetermined timeframe and then closed; and

read a high side pressure on the pressure differential transmitter.