The Ajax WaterStop (DN 25) Jeweller protects against fire, carbon monoxide or water damage and sends instant alerts through the Ajax hub to the app.
We supply and install Ajax alarm and video systems across London and the Home Counties. Add this to your package and we will check everything works together before sending a written quote.
Key specifications
| Jeweller communication technology | Proprietary wireless technology for events transmission. Features: Two-way communication.; Protection against device spoofing.; Block encryption featuring a … |
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| Radio frequency bands | 866.0 – 866.5 MHz 868.0 – 868.6 MHz 868.7 – 869.2 MHz 905.0 – 926.5 MHz 915.85 – 926.5 MHz 921.0 – 922.0 MHz Depends on the region of sale. |
| Maximum effective radiated power (ERP) | up to 20 mW Automatic power adjustment to reduce power consumption and the effect of radio interference. |
| Radio signal modulation | GFSK |
| Radio communication range | up to 1,100 m Between device and hub (or radio signal range extender) without obstacles. |
| Radio signal encryption | Block encryption with a floating key protects all the data stored and transmitted. |
| Frequency hopping | Prevents radio interference and jamming. |
| Shutoff valve | 1" (DN 25) RuB valve Included in the complete set. |
| Electric actuator | Opens or closes the valve. |
| Mounting platform | To install an electric actuator on a shutoff valve. |
| Fields of application | water supply and heating systems |
| Operating fluid | hot and cold water, non-aggressive liquids |
| Material | brass |
| Connection type and thread | NPT taper (ANSI B.1.20.1), female-to-female threads |
| Thread size | 1" (DN 25, 25 mm) |
| Operating liquid temperature range | from -20 °C to 177 °C Freezing of the fluid in the pipeline may severely damage the valve and electric actuator. |
| Lever on mounting platform | To manually shut off the water supply without tools in case of emergencies. |
| Torque | up to 8.5 N•m |
| Operating pressure | up to 145 psi |
| Shut-off speed | up to 7 seconds The value may increase if the valve is clogged or stuck. |
Specifications are the manufacturer’s published figures.








