Ajax WaterStop 3/4

Ajax WaterStop Jeweller is a wireless, motorised shut-off valve that cuts your water supply the moment a leak is detected — before a burst pipe or overflow turns into serious water damage. This is the 3/4" (DN20) version, sized for mid-size supply lines.

• Shuts off the water supply in as little as 5–7 seconds once triggered
• Works automatically with Ajax LeaksProtect, or via automation scenarios with third-party leak detectors
• High-torque electric actuator (up to 8.5 N·m) reliably closes the valve, even if it is partially seized
• Brass ball valve rated for both hot and cold water lines, up to 10 bar working pressure
• Manual lever and on-device button allow instant shut-off without tools, even without power
• Runs on 4× CR123A batteries (up to 3 years) or an optional 9 V DC external power supply
• Control, monitor, and test the valve remotely from the Ajax app, from anywhere
• Anti-tamper lock and sabotage alarm protect against unauthorised disassembly
• Jeweller radio protocol communicates with the hub at up to 1,700 m in open space

Required to use: Compatible Ajax hub; Ajax LeaksProtect recommended for automatic triggering