IP Library Granted Patent US 12,584,298
Granted Patent B2
US 12,584,298 · App. 18/407,136 · Granted Mar 24, 2026

Backflow alert system

Inventors: Joseph Michael Burke (Deerfield, NH); Ian David Baynes (Merrimac, MA); Steven Castrigno (Chester, NH)
Assignee: WATTS REGULATOR CO.
E03B7/077E03B7/071G08B25/006E03B7/072E03C1/102E03C1/106G01F1/64G01F15/005G01F23/268G01M3/184G01M3/2876
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Quick Facts
Patent No.
US 12,584,298
App. No.
18/407,136
Granted
Mar 24, 2026
Kind
B2
Abstract

A sprinkler backflow alert system includes a sprinkler system, a building fire panel, a backflow preventor including at least one shut-off valve, a fluid detection system, and a tamper switch. The backflow preventor may be fluidly coupled upstream of the sprinkler system. The fluid detection system is configured to detect a discharge of water from the backflow preventor and generate a water discharge signal corresponding to the backflow discharge. The tamper switch is configured to detect a change in a position of the at least one shut-off valve and generate a tamper signal in the event the at least one shut-off valve is closed or partially closed. When a backflow discharge event occurs, a signal is sent to the fire panel triggering the building fire alarm as well as sending an alert to the local fire department and facility owner.

Claims (27)

1 . A backflow alert system comprising:

a backflow preventor including at least one shut-off valve;

a fluid detection system configured to detect a discharge of water from the backflow preventor and generate a water discharge signal corresponding to the backflow discharge; and

a tamper switch configured to detect a change in a position of the at least one shut-off valve and generate a tamper signal in the event the at least one shut-off valve is closed or partially closed.

2 . The backflow alert system of claim 1 , wherein the tamper signal is configured to trigger a building fire alarm.

3 . The backflow alert system of claim 2 , wherein the tamper signal is configured to cause an alert to be transmitted to at least one of a fire department or a facility owner.

4 . The backflow alert system of claim 2 , wherein the tamper signal is transmitted wireless to the building fire alarm.

5 . The backflow alert system of claim 2 , wherein the tamper switch is coupled via a wired connection to the building fire alarm.

6 . The backflow alert system of claim 1 , wherein the water discharge signal is transmitted to a building fire panel in response to the fluid detection system detecting the discharge of water from the backflow preventor.

7 . The backflow alert system of claim 6 , wherein the water discharge signal is transmitted to tamper switch and is transmitted from the tamper switch to the building fire panel.

8 . The backflow alert system of claim 1 , wherein the tamper switch is coupled to the at least one shut-off valve.

9 . The backflow alert system of claim 1 , wherein the fluid detection system includes at least one sensor configured to detect the discharge of water from the backflow preventor using capacitance.

10 . A sprinkler backflow alert system comprising:

a sprinkler system;

a building fire panel;

a backflow preventor including at least one shut-off valve, the backflow preventor fluidly coupled upstream of the sprinkler system;

a fluid detection system configured to detect a discharge of water from the backflow preventor and generate a water discharge signal corresponding to the backflow discharge; and

a tamper switch configured to detect a change in a position of the at least one shut-off valve and generate a tamper signal in the event the at least one shut-off valve is closed or partially closed.

11 . The sprinkler backflow alert system of claim 10 , wherein the tamper signal is configured to trigger a building fire alarm.

12 . The sprinkler backflow alert system of claim 11 , wherein the tamper signal is configured to cause an alert to be transmitted to at least one of a fire department or a facility owner.

13 . The sprinkler backflow alert system of claim 11 , wherein the tamper signal is transmitted wireless to the building fire alarm.

14 . The sprinkler backflow alert system of claim 11 , wherein the tamper switch is coupled via a wired connection to the building fire alarm.

15 . The sprinkler backflow alert system of claim 10 , wherein the water discharge signal is transmitted to the building fire panel in response to the fluid detection system detecting the discharge of water from the backflow preventor.

16 . The sprinkler backflow alert system of claim 15 , wherein the building fire panel is configured to trigger a building fire alarm in response to receipt of the water discharge signal.

17 . The sprinkler backflow alert system of claim 15 , wherein the water discharge signal is transmitted to tamper switch and is transmitted from the tamper switch to the building fire panel.

18 . The sprinkler backflow alert system of claim 10 , wherein the tamper switch is coupled to the at least one shut-off valve.

19 . The sprinkler backflow alert system of claim 10 , wherein the fluid detection system includes at least one sensor configured to detect the discharge of water from the backflow preventor using capacitance.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2026
From: BURKE, JOSEPH MICHAEL; BAYNES, IAN DAVID; CASTRIGNO, STEVEN
To: WATTS REGULATOR CO.
Reel/Frame 074974/0551 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 25, 2024
From: BURKE, JOSEPH MICHAEL; BAYNES, IAN DAVID
To: WATTS REGULATOR CO.
Reel/Frame 066245/0834 →
Continuity (4)
Continuation In Part PCTUS2021062336 · Dec 8, 2021
Continuation In Part 17115682 · Dec 8, 2020
Provisional Application 63438763 · Jan 12, 2023
Related Publication 20240200313A1 · Jun 20, 2024
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