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Alert System Type
Water / Leak
Sensor Type
Water Leak / Flood
Auto-Shut Off
Battery Operated
Relay Output Support
Ease of Installation
Intermediate (Installs < 60 minutes)
Onsite Pro
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Stop Washing Machine Leaks From Becoming a Disaster!
Onsite Pro FS3/4H Washing Machine FloodStop with Straight Valves
Onsite Pro FS3/4H Washing Machine FloodStop with Straight Valves
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Setup Diagram
Onsite Pro FS3/4H Washing Machine FloodStop with Straight Valves
Item# 71155
Price: Normally $200.00 
Hot Deal $183.95
Free shipping on orders over $175 - See Details


  • Prevent avoidable water damage to your home or belongings
  • Automatically shuts off water to washing machine when leak is detected
  • Installs in minutes - no professional plumber is needed
  • Two output contact wires make is easy to integrate with INSTEON

Essential Info

Don't risk your floors, carpets and other personal belongings to costly and ruinous water damage! Prevent flood damage and avoid costly repairs with the easy-to-install Washing Machine Valve Shutoff Kit. This system not only detects leaks early, but it automatically shuts your water off in the event of a leak, alerting you with the control panel's 87db alarm. Incorporate the Flood Stop into your INSTEON or X10 network - the control unit has two output contact wires and plugs with 6" leads. This system can also connect to an alarm, an automatic phone dialer, or both.

When using the AC/DC adaptor, the 4 AA batteries will serve as a battery backup in case of a power outage. These FloodStop valves screw onto your pre-existing hose-bibbs, just like screwing on a hose. The non-intrusive devices can be installed in as little as 10 minutes; no professional plumbers are required.

This kit includes everything you need to protect your property from costly water-leak damage: valves installed on your hot and cold water inlets, a water sensor to be placed on the floor, and the control unit, which is mounted to your wall with the included screws. An AC/DC power supply is included; you can also install four AA batteries, (sold separately) for backup power. You can even add multiple water sensors for different areas around your washing machine. The Washing Machine FloodStop with Straight Valves is also available with 90 Degree Valves, sold separately.


What's Included

2x - Automatic Straight Ball Valves
1x - Water Sensor
1x - FloodStop Control Unit
1x - AC/DC Adaptor
2x - Output Contact Wire
1x - Mounting Hardware

More Info

Designed for both residential and commercial dwellings, the Washing Machine Valve Shutoff Kit uses a pair of 3/4-inch threaded motorized ball valves powered by an AC/DC power adaptor (or 4 AA batteries) to shut off the water supply whenever your washing machine leaks.


ManufacturerOnsite Pro
Manufacturer Product NoFS3/4H
AlarmBeeping with mute button
MaterialsLead-Free Brass
PSI RatingRated 0-180 psi; Max. 250 psi
Signal OutputsFrom 2 normally closed to 1 Normally Open
ValveMotorized Ball Valves
Motorized Ball ValvesCNC machined with 90┬░downward outlet to CNC machined (straight inline valves)
OperationMotors operate at 6VDC
Operating Temperature32┬░ F to 212┬░ F
PowerAC/DC and 4 AA batteries for backup power, or can be powered with batteries only
ComplianceUL-listed class 2 wall adapter
Dimensions1.25" x 7.5" - 3/4" Hose Fitting
Warranty1 year, limited

Important notes:
Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
Manufacturer contact information: AQUA MANAGERS, Tel: (949) 362-2959


Setup Diagram       
Setup Diagram       


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Average Customer Rating
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Share your thoughts with other customers
GARY E -- lima, OH   5/2/2014
Works Great !!!!!!


"C" Batteries  Onsite Pro XS-01 Extra FloodStop Sensor Pad for FloodStop System, Wired  9ft Controller Extension Cable  9ft Transformer Extension Cable 
"C" Batteries  Onsite Pro XS-01 Extra FloodStop Sensor Pad for FloodStop System, Wired  9ft Controller Extension Cable  9ft Transformer Extension Cable 

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