FloodStop Systems
FS 3/4 H90
FloodStop For The Washing Machine |

5 Minute Installation!
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FloodStop 3/4" H90 Components:
- Motorized Ball Valves (Two valves, 3/4 inch Hose Threaded with union)
- Control Unit (with Battery Backup 4 X C Size)
- Water/Leak Sensor (1.25” X 7.5”)
- AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
- Output Contact Wires (2)
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How FloodStop FS 3/4-H90 Works:
- Each valve is screwed onto the hot and cold water hose bibs
- Water/leak sensor is placed on the floor behind Washing Machine
- Valves stay open until water loss is detected
- Water on sensor immediately closes valves and sounds alarm
- Valves stay closed until problem is attended to and system is reset
- Controller may optionally be connected to Alarm, HA System, or Auto-Dialer
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Prevent flooding from failed Washing Machines and hoses:
Washing Machines are one of the most damaging appliances within the home. Washing Machine related flooding can happen at any time, from hoses with ruptures or cracked fittings, to internal failures from clamps, valves, pumps, drains and failed switches. Whether at home, at work, or on vacation these flooding events go undetected for hours or even days.
FloodStop 3/4-H90 automatically shuts off the water supply to the Washing Machine and sounds an alarm, leaving all other household fixtures and appliances operational. Easily installed in ten minutes. 5-Year Manufacturer’s Warranty.
Without FloodStop, Flooding Will Continue:
Unexpected appliance failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.
With FloodStop, Property Damage is Avoided:
Water loss from unexpected appliance failures and hose ruptures are detected by FloodStop’s water/leak sensor, and the water supply is automatically and immediately shut off.
Brochure (PDF)
Instruction Manual (PDF)
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FS 3/4-NPT
FloodStop For The Water Heater |

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FloodStop 3/4 NPT Components:
- Motorized Full-Port Ball Valve (3/4 inch NPT pipe threaded)
- Control Unit (with Battery Backup 4 X C Size)
- Water/Leak Sensor (1.25” X 7.5”)
- AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
- Output Contact Wires (2)
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How FloodStop System II Works:
- The valve is installed between the Water Heater and its shutoff valve.
- Water/leak sensor is placed at the base of the Water Heater
- Valve stays open until water loss is detected
- Water on sensor closes ball valve and sounds alarm
- Valve stays closed until problem is attended to and system is reset
- Controller may optionally be connected to Alarm, HA System, or Auto-Dialer
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Prevent Water Heaters from flooding your property:
Water Heaters have a limited life, then leak after years of corrosion. Water Heaters are generally considered a maintenance-free appliance, but they are also one of the single most damaging appliances in the home. Because Water Heaters are continually under pressure, even small pressurized leaks can quickly flood and devastate a home. Whether at home, at work, or on vacation these flooding events can go undetected for hours or even days.
FloodStop 3/4-NPT automatically shuts off the water supply to the Water Heater and sounds an alarm, leaving all other household fixtures and appliances operational. Easily installed in ten minutes. 5-Year Manufacturer’s Warranty.
Without FloodStop, Flooding Will Continue:
Unexpected appliance failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.
With FloodStop, Property Damage is Avoided:
Water loss from unexpected appliance failures and hose ruptures are detected by FloodStop’s water/leak sensor, and the water supply is automatically and immediately shut off.
Brochure (PDF)
Instruction Manual (PDF)
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FS 3/4-C
FloodStop For The Water Heater |
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FloodStop 3/4 C Components:
- Motorized Full-Port Ball Valve (3/4 inch Compression Fittings)
- Control Unit (with Battery Backup 4 X C Size)
- Water/Leak Sensor (1.25” X 7.5”)
- AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
- Output Contact Wires (2)
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How FloodStop FS 3/4-C Works:
- The valve is installed between the Water Heater and its shutoff valve.
- Water/leak sensor is placed at the base of the Water Heater
- Valve stays open until water loss is detected
- Water on sensor closes ball valve and sounds alarm
- Valve stays closed until problem is attended to and system is reset
- Controller may optionally be connected to Alarm, HA System, or Auto-Dialer
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Prevent Water Heaters from flooding your property:
Water Heaters have a limited life, then leak after years of corrosion. Water Heaters are generally considered a maintenance-free appliance, but they are also one of the single most damaging appliances in the home. Because Water Heaters are continually under pressure, even small pressurized leaks can quickly flood and devastate a home. Whether at home, at work, or on vacation these flooding events can go undetected for hours or even days.
FloodStop 3/4-C automatically shuts off the water supply to the Water Heater and sounds an alarm, leaving all other household fixtures and appliances operational. Easily installed in ten minutes. 5-Year Manufacturer’s Warranty.
Without FloodStop, Flooding Will Continue:
Unexpected appliance failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.
With FloodStop, Property Damage is Avoided:
Water loss from unexpected appliance failures and hose ruptures are detected by FloodStop’s water/leak sensor, and the water supply is automatically and immediately shut off.
Brochure (PDF)
Instruction Manual (PDF)
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FS 1/4-C
FloodStop For Ice Maker or Water Filter |

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FloodStop 1/4 C Components:
- Motorized Ball Valve (1/4 inch Compression Fitting)
- Control Unit (with Battery Backup 4 X C Size)
- Water/Leak Sensor (1.25” X 7.5”)
- AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
- Output Contact Wires (2)
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How FloodStop System II Works:
- The valve is connected to the angle stop and the supply line
- Water/leak sensor is placed at the base of the appliance
- Valve stays open until water loss is detected
- Water on sensor closes ball valve and sounds alarm
- Valve stays closed until problem is attended to and system is reset
- Controller may optionally be connected to Alarm, HA System, or Auto-Dialer
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Prevent Ice Makers and Water Filters from flooding your property:
Water Filter and Icemaker components are small and break easily. Water-line breaks develop from movement, accidental bumping and simple vibration. In many cases a crack in the water-line grows from simple vibrations, eventually and unexpectedly rupturing, and then flooding the property. Whether at home, at work, or on vacation these flooding events can go undetected for hours or even days.
FloodStop 1/4-C automatically shuts off the water supply to the Water Heater and sounds an alarm, leaving all other household fixtures and appliances operational. Easily installed in ten minutes. 5-Year Manufacturer’s Warranty.
Without FloodStop, Flooding Will Continue:
Unexpected appliance failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.
With FloodStop, Property Damage is Avoided:
Water loss from unexpected appliance failures and hose ruptures are detected by FloodStop’s water/leak sensor, and the water supply is automatically and immediately shut off.
Brochure (PDF)
Installation Instructions (PDF)
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FS 3/8-C
FloodStop For Dish Washers |
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FloodStop 3/8 C Components:
- Motorized Ball Valve (3/8 inch Compression Fitting)
- Control Unit (with Battery Backup 4 X C Size)
- Water/Leak Sensor (1.25” X 7.5”)
- AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
- Output Contact Wires (2)
How FloodStop 3/8-C Works:
- The FloodStop valve is connected to the angle stop and supply line
- Water/leak sensor is placed at the base of the appliance or fixture (Dishwasher – Sink
- 3/8” Icemaker - Toilet – etc.)
- Valve stays open until water loss is detected
- Water on sensor closes FloodStop valve and sounds alarm
- Valve stays closed until problem is attended to and system is reset
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Dishwasher leaks are often small and go unnoticed until significant damage is finally discovered. Such a leak will continue to collect under the Dishwasher and then seep between the kitchen flooring and sub-flooring. The damage often goes undetected until the floor is visually buckled or warped, at which time the damage and cost to replace is extensive.
Brochure (PDF)
Instruction Manual (PDF)
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FSES
Extra Sensor
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- Additional Sensor for FloodStop Systems Products.
- Includes sensor pad and extension cable (daisy-chains from primary sensor.)
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