Ajax WaterStop Wireless Water Shut-off Valve 3/4 inch White

The Ajax WaterStop is a professional-grade wireless shut-off valve designed to provide remote control over water supply systems. By integrating seamlessly with the Ajax security ecosystem, it acts as a critical defense against flooding, automatically closing the water supply in just 5 seconds when a leak is detected by compatible sensors. Built with a high-torque electric actuator and a durable brass valve, this device ensures reliability in both residential and commercial plumbing environments.

Advantages

The primary strength of the Ajax WaterStop lies in its rapid response time and autonomous operation. With a powerful actuator capable of 8.5 N•m torque, it can effectively close even stiff or rarely used valves without risk of damage. Its wireless nature eliminates the need for complex wiring, allowing for installation in tight spaces or technical shafts where traditional wired systems would be impractical. The device offers exceptional energy efficiency, with a battery life of up to three years, and supports an optional external power supply for high-demand scenarios. Furthermore, the use of the proprietary Jeweller radio protocol ensures secure, encrypted communication with the hub, protecting the system against signal jamming and unauthorized access.

Suitable for

• Residential homes and apartments to prevent flood damage
• Commercial buildings and office spaces
• Technical rooms and utility closets
• Hard-to-reach plumbing installations
• Automated water management scenarios

The WaterStop may not be suitable for industrial-scale high-pressure pipelines that exceed the specified torque or diameter requirements. It is also not intended for use in environments where the radio signal is completely blocked by heavy lead shielding or where the ambient temperature consistently falls outside the manufacturer's operational specifications.

Key specifications

• Valve size: 3/4 inch
• Connectivity: Wireless via Jeweller protocol (866-922 MHz)
• Response time: 5 seconds
• Torque: 8.5 N•m
• Power source: CR123A batteries or optional 9–12 V⎓ external supply
• Dimensions: 70 x 104 x 140 mm
• Compatibility: ISO 5211 standard ball valves

Installation involves mounting the valve into the existing plumbing line, followed by attaching the electric actuator to the valve platform. The actuator can be positioned in four different orientations to suit the available space. Once physically installed, the device is added to the Ajax security system via the mobile application, where users can configure automated scenarios, such as shutting off water when the system is armed or when a leak detector triggers an alarm.

What to consider before purchase

• Ensure the pipe diameter matches the 3/4 inch valve size
• Verify that the installation location is within the radio range of the Ajax hub or a range extender
• Check for available space to accommodate the actuator unit
• Confirm if an external power supply is needed for your specific usage intensity

For optimal performance, it is recommended to test the valve operation periodically and ensure that the Ajax hub is updated to the latest firmware. If installing in a location with poor signal, consider adding an Ajax ReX range extender to maintain a stable connection.