Ajax 3/4" (DN20) Water Shut-Off Valve in White

WaterStop Jeweller: Smart Water Shut-Off Valve

The Ajax WaterStop 3/4" DN20 helps protect homes and businesses against damage caused by leaks and flooding by automatically shutting off the water supply when the system detects a leak. It also allows users to open or close the shut-off valve remotely from anywhere through the Ajax apps, providing full control even when the property is unoccupied.

Integrated into the Ajax anti-flood system, it communicates with the hub via the Jeweller wireless protocol and can operate together with an Ajax flood detector. When LeaksProtect or an integrated third-party flood detector triggers an alarm, WaterStop can automatically shut off the water; under normal conditions, the valve closes approximately 7 seconds after receiving the command.

The 3/4" (DN20) RuB valve is designed for water supply and heating installations, including both cold and hot water. In addition to remote control, it features physical manual operation and supports scenarios for shutting off the water according to a schedule or when the security system is armed. This makes it particularly suitable for installers looking to combine flood prevention and automation within a single Ajax system.

This product is not a replacement part; it is intended for new installations or extensions of compatible Ajax systems. Its four pre-installed CR123A batteries provide up to 3 years of operation, while optional external power is also supported. Overall, Ajax WaterStop takes flood protection beyond simple leak detection by enabling the system to act directly on the water supply when required.

Reference: AJ-WATERSTOP-3/4-W