Remotely controlled water shutoff valve.

Not a drop of problems

WaterStop automatically shuts off the water in 5 seconds at a facility with an Ajax security system if LeaksProtect or a third-party water leak detector is triggered. The device combines a high-quality valve and a powerful electric actuator. You can control WaterStop and check its status from anywhere in the world — all you need is an Internet connection and an Ajax app. You can also create a scenario to shut the water off at a specific time or when arming the system.

Features

4 mounting positions
Water shut-off in 5 seconds
Bonomi Industries valve included (ISO 5211 standard) – 1/2″ (DN15), 3/4″ (DN20) or 1″ (DN25)
Up to 1100m range of communication with an Ajax hub
Up to 3 years of battery life
Compatible with cold and hot water pipes
Jeweller radio communication: Two-way communication, TDMA, encryption, hopping, power adjustment
Mounting the electric actuator without additional tools
Automatic stuck prevention with scenarios
Automatic scenarios
Electric actuator protection against unauthorized dismantling
Button and lever to shut off the water manually
Informative in-app notifications
Remote control and configuration
Optional external power supply
Notifies about overheating
Compatible hubs and range extenders

Hub Plus
Hub 2 (2G)
Hub 2 (4G)
Hub 2 Plus
Hub Hybrid (2G)
Hub Hybrid (4G)
ReX
ReX 2
Wherever there is a risk of water leak

Private residence
Public space
Industrial premises
Water shut-off in 5 seconds

WaterStop is equipped with a powerful actuator of up to 8.5 N•m torque. This is enough to shut off even a stuck-up valve without the risk of damaging it. Under normal operating conditions, WaterStop shuts off the water in 5 seconds after the command or automatically by scenario whenever LeaksProtect or a third-party sensor detects flooding. In a setting with a ¾-inch pipe and 2.5 bar of pressure in the water supply system, less than 1 liter of water will leak out.

Inside the water leak prevention system based on Ajax, every device operates either on pre-installed batteries or has a backup power supply in case of a blackout. The system monitors the facility 24/7, giving you complete peace of mind that the property is protected.

Shuts even a stuck-up valve
Suitable for facilities with unstable or no power supply
Protected on every level

WaterStop is suitable for controlling both hot and cold water supplies and is ready to operate in challenging environments. With additional protection, WaterStop withstands overcurrent and notifies about overheating, making it impossible for the electric actuator to fail even when the shutoff valve is stuck.

Overheating notification
Overcurrent protection
One-stop solid brassware

WaterStop is available in three versions with different valve options: ½” (DN 15), ¾” (DN 20), or 1” (DN 25). Those are the most common sizes used to cover any demand, from residential to business facilities. Also, the WaterStop electric actuator is compatible with all ball valves that meet the ISO 5211 standard. So when it comes to specific tasks and sizes, a plumber installs an available on every market compatible valve, and the installation engineer easily connects the electric actuator.

Installation without any construction involved

The myth about anti-flood systems being difficult to install is busted. Ajax minimized an expensive, long, and dusty experience for clients and professionals. Cutting-edge hardware and software engineering allowed us to implement advanced capabilities with significant autonomy in a compact size. Miniature Ajax water leak detectors suit hard-to-reach places and do not require enclosure disassembling — they can be installed on a horizontal surface without attaching. The shutoff valve is installed in line with an existing plumbing system. The actuator unit does not require wires and fits limited spaces, having four possible installation positions towards the valve.

Stable performance for years

Batteries – No additional cable routing is required: WaterStop is autonomous and does not depend on the 110 or 220 V~ grid. With a 3-year battery life and no wires, the installation process takes much less time and effort. Ajax apps will notify an installation engineer and users about the low battery level in advance. The batteries are replaceable — so after three years, the installer pops the new ones, and WaterStop continues to operate as usual.

Up to 3 years of operation with pre-installed batteries
In-app low battery warning
Replaceable CR123A batteries
External power supply – When a constant shut-off valve operation is required or the installation place uses extreme temperatures, the batteries can discharge faster. An option to connect a 9–12 V⎓ power supply will come in handy, eliminating frequent battery replacement and reducing service costs. And the pre-installed batteries will serve as a backup, so even in a power outage WaterStop continues to operate without any problem.

9–12 V⎓ power supply connection
Pre-installed batteries as a backup power source
9–12 V⎓ power supply unit is not included in the WaterStop complete set.

Unique wireless technologies

The Ajax system uses two-way secure radio communication based on Jeweller proprietary protocol. It supports block cipher encryption and device authentication on every session with the hub to prevent sabotage, spoofing, or data theft.

Ajax wireless technology has up to 1,100 meters of radio signal communication range in an open space, making it on average longer than competing solutions from different manufacturers. Automatic power adjustment makes it energy efficient by not using the maximum power of radio transmitters in system devices on a regular basis. It is also more stable, using less noisy radio frequencies. For protection against radio interference and signal interception, Ajax hubs use frequency hopping: the system automatically changes frequency within a band and notifies the security company and users about the jamming.

Up to 1,100 meters of radio communication range with a hub
Encrypted two-way radio communication
Notifications about jamming and connection loss
Advanced automation for greater safety

WaterStop is a part of the Ajax ecosystem. Using scenarios , it can interact with automation devices and PhOD detectors of the MotionCam lineup. Whether it’s a minor water leak or a massive flooding, WaterStop shuts off the water in a matter of seconds. At the same time, MotionCam (PhOD) sends pictures to Ajax apps to identify what causes the water leak and assess the possible damage. And to prevent emergencies, automatic water supply control will turn off the water when no one is using it — a reliable combination of security and automation that runs like a Swiss watch.

Water leak prevention system – WaterStop automatically shuts off the water when LeaksProtect or any other third-party leak detector integrated into Ajax via Transmitter or MultiTransmitter detects a water leak.

Water leak
LeaksProtect
WaterStop
Water shut-off when changing the security mode – WaterStop automatically shuts off the water when you arm the system. Be sure that there will be no water leaks at the facility when you’re away.

Arming
WaterStop
Scheduled water supply – Adjust a schedule, and WaterStop will automatically turn off the water supply at a particular time.

Schedule
WaterStop
Sabotage-resistant

Communication failure detection
Anti-sabotage mount lockers
Tamper alarm
Control button locking
Intuitive installation and connection

The WaterStop actuator is ready to operate straight out of the box. It installs on the mounting platform without tools and enclosure disassembling in four possible positions towards the valve. A plumber installs a bundled or another compatible shutoff valve in advance without an installation engineer’s presence — all he needs to know is the electric actuator dimensions.

Ajax apps help quickly make the device a part of the automated system. There is no need to visit the object to disable the device or change the settings. The design allows maintenance and repair in hard-to-reach places: pipe tunnels, technical boxes, walls, etc. It is possible to replace the actuator unit without dismantling the shutoff valve.

Connection – Pairing with the security system via QR code
Installation – Installation on a shut-off valve without disassembling the enclosure of the electric actuator
Setup – Configuring and testing in mobile and desktop apps
Technical Specifications

COMMUNICATION

Jeweller communication technology: Proprietary wireless technology for events transmission. Features: Two-way communication, Protection against device spoofing, Block encryption featuring a floating key, Instant notifications, Remote configuration via Ajax apps.
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.
OPERATING COMPONENTS

Shutoff valve: ½” (DN 15), ¾” (DN 20), or 1″ (DN 25) Bonomi Industries shutoff valve included in complete set.
Electric actuator: Opens or closes the valve.
Mounting platform: To install an electric actuator on a shutoff valve.
Mounting lockers: To fix an electric actuator on a shutoff valve. The complete set includes two options: standard (pre-installed), anti-sabotage
WATER SHUT-OFF (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: F/F threaded. Thread size: ½” (DN 15, 15 mm), ¾” (DN 20, 20 mm), 1″ (DN 25, 25 mm)
Operating liquids’ temperature range: from +5°C to +120°C
Mounting platform: to mount an electric actuator on a shutoff valve. Complies with the ISO 5211 standard.
Lever on mounting platform: To manually shut off the water supply without tools in case of emergencies.
WATER SHUT-OFF (ELECTRIC ACTUATOR)

Torque: up to 8.5 N•m
Operating pressure: up to 10 bars
Shut-off speed: up to 5 seconds. The value may increase if the valve is clogged or stuck.
Remote control: control and configuration in Ajax apps. Apps provide all information about the device: current valve state (open/closed), statuses of battery charge, external power supply, and communication with a hub.
Manual control: the control button on the electric actuator enclosure. Opens/closes the valve when pressed.
ADDITIONAL FEATURES

Installation: does not require tools and enclosure disassembling, 4 possible mounting positions of electric actuator towards the valve, anti-sabotage locker to complicate unauthorized dismount of an electric actuator. The design allows maintenance, and repair in hard-to-reach places: pipe tunnels, technical boxes, walls, etc. It is possible to replace the actuator unit without dismantling the shutoff valve.
LED indication: The LED placed under an Ajax logo on enclosure and reports the electric actuator states.
Automation scenarios: alarm reactions, security mode change reactions, scheduled actions, temperature scenarios, humidity scenarios, CO2 level scenarios, by pressing Button, by pressing LightSwitch
Stuck prevention: the scheduled scenario automatically opens/closes a shutoff valve. Configured in Ajax apps. The recommended periodicity is once a week.
Overheating notification: The notification is sent to Ajax apps when the device temperature tops +60°C and when it returns to normal.
ANTI-SABOTAGE PROTECTION

Protection against spoofing: device authentication
Communication failure detection: in 36 s. The time depends on the Jeweller (or Jeweller/Fibra) settings.
Tampering alarm: Notifies about attempts to detach the enclosure from the mount.
Mounting lockers for fastening – The complete set includes two options: Standard locker (pre-installed) — fixes an electric actuator on a shutoff valve. Removes easily for a quick access to the valve, Anti-sabotage locker — used instead of a standard locker. Securely fixes an electric actuator on the valve to complicate an unauthorized dismount.
POWER SUPPLY

Pre-installed batteries: 4 × CR123A battery. Up to 3 years of battery life.
Optional external power supply: 7.5–14 V⎓, up to 1.8 A. The Recommended voltage of the power supply is 9 or 12 V⎓.The batteries serve as a backup when external power supply is connected.
ENCLOSURE

Dimensions:
104 × 140 × 70 mm – ½” (DN 15) shutoff valve with an electric actuator.
104 × 150 × 70 mm – ¾” (DN 20) shutoff valve with an electric actuator.
104.5 × 159 × 70 mm – 1″ (DN 25) shutoff valve with an electric actuator.
93 × 70 × 95 mm – Electric actuator.
75 × 27 mm – ½” (DN 15) shutoff valve.
80 × 32 mm – ¾” (DN 20) shutoff valve.
90 × 41 mm – 1″ (DN 25) shutoff valve.
Weight:
869 g – ½” (DN 15) shutoff valve with an electric actuator.
1012 g – ¾” (DN 20) shutoff valve with an electric actuator.
1336 g – 1″ (DN 25) shutoff valve with an electric actuator.
536 g – Electric actuator.
333 g – ½” (DN 15) shutoff valve.
476 g – ¾” (DN 20) shutoff valve.
800 g – 1″ (DN 25) shutoff valve.
Operating temperature range: from 0°C to +60°C
Operating humidity: up to 95%
COLOURS

Black or White
COMPLETE SET

WaterStop Jeweller
4 CR123A batteries
Pre-installed
Quick start guide