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Simple, straightforward and low shipping rates for these washing machine flood valves.


Automatic Washing Machine Flood Valves


The unique FloodStop I is specifically designed to help detect washing machine leaks at the source. Easy to install and very simple to use, these units can provide some peace of mind, and an inexpensive fail-safe in the event of a leak. There is also a water heater leak detection device and one for icemakers too, so all of your appliances can be covered, and your leak worries solved.

The washing machine is one of the main sources of flood damage in homes.
Most of us know someone whose washing machine leaked or whose hoses burst.
Why chance it? Install a FloodStop leak detection device today!

Install a pair of brass FloodStops for your washing machine today! It's easy!

FloodStop System for Washing Machines
FloodStop system for washing machines
FS 3/4-H90
Floodstop system for washing machines
FS 3/4-H
click here to view washing machine installation

Stop washing machine leaks from becoming a flood. Help prevent flooding from failed washing machines and hoses. The FloodStop (FS 3/4-H90 and FS 3/4-H) will automatically shut off the water supply to the washing machine, sounds an alarm, and still leaves all other household fixtures and appliances operational. Powered by AC Adaptor/Transformer or Batteries. Output contacts available, which allow the Controller to connect with Alarm, Home Automation or Auto-Dialer systems if desired. Easily installed in ten minutes. 1-Year Manufacturer's Warranty.

Washing machine flooding can cause more water damage than any appliance or fixture 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 (FS 3/4-H90 and FS 3/4-H) Components:
  • Motorized Ball Valves (Two valves, 3/4" swivel hose thread union)
  • Control Unit (with Battery Backup 4 X C Size) and 30" cord
  • Water/Leak Sensor (1-1/4" X 7-1/2") with 7' cord
  • AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
  • (2) 6" Output Contact Wires


  • How FloodStop (FS 3/4-H90 and FS 3/4-H) Work:
  • Each FloodStop 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 FloodStop valves and sounds alarm
  • Valves stay closed until problem is attended to and system is reset


  • Without FloodStop, Flooding Will Continue:
    Unexpected washing machine failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.

    With Flood Stop, Property Damage can be Avoided:
    Water loss from unexpected washing machine failures and hose ruptures are detected by FloodStop's water/leak sensor, and the water supply is automatically and immediately shut off. Make certain that you follow all (included in your shipment) of the manufacturer's directions and maintenance steps to ensure that you are protected from floods in your home.

    Model # Description Price & Quantity
    FS 3/4-H90 3/4" Hose Threaded Motorized Ball Valves with 90 Degree Downward Outlet (Brass) $140.68
    FS 3/4-H 3/4" Hose Threaded Motorized Ball Valves (two) With Inline Outlet (brass) $140.02
    FSAS Additional Sensor for FloodStop Systems - more information $14.73
    FSC2VEW Controller to valve extension wire - extends reach by 9 feet $14.71

    Order 10 or more #FS 3/4-H90 or #FS 3/4-H FloodStops for additional savings!

    - Or -View Button

    Need quality flexible hoses for washing machines? Click here


    Frequently Asked Questions

    Q. "How does it work?"
    A. Simple! You'll install a FloodStop motorized ball valve(s) upstream of each supply line and place the water sensor on the floor behind the unit that needs detection. If water leaks due to a broken line or the failure of ANY internal component of your plumbing fixture, the control unit tells the motorized ball valve(s) to shut off the water and sound an alarm.

    Q. "So these systems can help prevent leaks or flooding?"
    A. Yes they can; whether it's a small leak or large flood, FloodStops shut off the water at the appliance. They help protect against broken lines, bursting lines and failure of internal components of your plumbing fixture.

    Q. "If there is no electricity running to the valve (either because they haven't been hooked up or the sensor has touched water), are the valves normally open or closed?"
    A. In their normal position, the FloodStop valves are open and will allow water to pass through; once water touches their sensor, the motorized ball valve is tripped and the valves are closed. The valve(s) will remain closed until the sensors are dried and the reset "Open" button is pressed. The Controller has a battery port for 4 X C size batteries, which will serve as a battery backup in case of a power outage. The same batteries will serve as the primary power source if a nearby electrical outlet is not available (battery life 1 year).

    Q. "Does the FloodStop system shut off water to the whole house?"
    A. No, this is a point of use product; it only shuts the water off at the source of the leak. Why shut off the water to your whole house if the cause of the problem is just at the washing machine, for instance? Whole house systems are much more expensive and usually require a plumber to install.

    Q. "What should I do after the system has detected a leak?"
    A. If a leak has occurred, turn the manual valve(s) to the off position, investigate and repair/stop the leak, dry the sensor, and reset the controller by pressing the "Open" button.

    Q. "Are FloodStop systems difficult to install?"
    A. No, if you can install a garden hose, you can install FloodStop. Installation takes 5 to 10 minutes, and your home will be protected against many sources of water damage.

    Q. "Why would I need to use the transformer extension wire?"
    A. Unlike the washing machine and the icemaker, the water heater is not always located next to an electrical outlet, and so you may need to use the 15-foot-long low-voltage extension wire.

    Q. "Why would I need an additional sensor?"
    A. You can increase your area of protection by adding extra sensors near your fixtures, such as behind your dryer or laundry tray/sink. Additional sensors can also be placed in your water heater's drain pan, as well as on the floor nearby (in case a leak sprays outside the pan); also, you may choose to install a sensor under your icemaker valve, another behind the refrigerator and a third near your icemaker's filter (if you have one).

    Q. "What about braided hoses, aren't they burst proof?"
    A. You should use brand new braided hoses whenever you can (especially on your washing machine), and take every precaution to avoid water damage, but hoses are not the only source of flooding. And, braided hoses are not burst proof, but only burst resistant. There are a wide variety of clamps, valves, pumps, drains, etc. inside many fixtures that can fail. (FloodStop was designed after the inventor suffered a home flood due to a switch failure that did not tell his washing machine when to stop filling with water. Water continued to run into the washer and flooded the house for 3 hours before it was discovered.).

    Q. "Do the FloodStop systems need maintenance?"
    A. As with all safety devices, checking your Floodstop regularly is key to keeping it ready for an emergency. Make sure to follow all of the manufacturer's instructions and directions by performing the proper maintenance and inspections to ensure that you are fully protected from flooding - this is ever-so-important with (man-made) safety devices as they will eventually fail.



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