Ajax Systems WaterStop[1]

Water leaks can cause devastating damage to homes and businesses, often going unnoticed until it's too late. The Ajax Systems WaterStop is a smart electric shut-off ball valve that automatically stops the water supply when a leak is detected by an Ajax LeaksProtect detector or through automation scenarios. This DN15 (1/2 inch) valve integrates seamlessly with Ajax hubs, providing remote control and monitoring via the Ajax mobile app. With its robust brass body and stainless steel ball, it withstands high pressure and temperature, ensuring reliable operation for years.

Who is it for

Homeowners, property managers, and small business owners who want to protect their premises from water damage without complex plumbing modifications. It's ideal for those already using the Ajax security system or looking for a smart water shut-off solution that can be controlled remotely and integrated into automation scenarios.

Main features

• Electric motorized ball valve with 8.5 N⋅m torque for reliable shut-off
• Quick operation: opens/closes in just 5 seconds
• Dual power: 4 × CR123A batteries (pre-installed) or 6.5–12 V⎓ external power
• Long battery life up to 3 years on batteries only
• High maximum water pressure: 16 bar (1.6 MPa)
• Wide temperature range: electronics 0°C to +60°C, valve up to +120°C
• IP56 protection against dust and water jets
• Anti-tampering with accelerometer and jamming detection
• Compatible with Ajax Hubs: Hub, Hub Plus, Hub 2, Hub 2 Plus, Hub Hybrid
• Remote control via Ajax mobile app (iOS/Android)
• Supports automation scenarios for leak response

Specifications

• Valve Type: Electric Shut-off Ball Valve
• Valve Size: DN15 (1/2 inch)
• Connectivity: Ajax Jeweller radio protocol
• Communication Range: Up to 1,100 m line of sight
• Power Supply: 4 × CR123A batteries (pre-installed) and/or 6.5–12 V⎓ external
• Battery Life: Up to 3 years
• Torque: 8.5 N⋅m
• Opening/Closing Time: 5 seconds
• Max Water Pressure: 16 bar (1.6 MPa)
• Operating Temperature (Electronics): 0°C to +60°C
• Max Water Temperature (Valve): +120°C
• Protection Class: IP56
• Anti-tampering: Accelerometer, jamming detection
• Valve Body Material: Brass
• Ball Material: Stainless Steel
• Installation: Indoor
• Colour: White

Tips

For optimal performance, install the WaterStop in an accessible location near the main water line. Pair it with Ajax LeaksProtect detectors for automatic shut-off when a leak is detected. Use the Ajax app to create scenarios, such as closing the valve when the security system is armed or when you're away. Ensure the valve is protected from direct water spray and extreme temperatures. Regularly test the valve operation and replace batteries as needed, or connect an external power supply for continuous operation.