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WATERSTOP ¾” (DN 20) WHITE

Part Number: AJ-WATERSTOP-3/4-W Categories ,

WaterStop automatically shuts off the water in 7 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.

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.

Not a drop of problems

WaterStop automatically shuts off the water in 7 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.

Tech specs

Communication with

control panel or range

extender

Jeweller communication technology

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)
≤ 20 mW

Hub communication range
up to 1,100 m

Polling interval
12–300 s
Adjusted by the PRO or user with admin rights in the Ajax app.

Protection against spoofing
Device authentication

CompatibilityHubs

Hub Plus

Hub 2 (2G)

Hub 2 (4G)

Hub 2 Plus

Hub Hybrid (2G)

Hub Hybrid (4G)

 

Radio signal range

extenders

ReX

ReX 2

Operating componentsElectric actuator

Controls the position of the shutoff valve: opens and closes it.

Shutoff valve
RuB valve DN20 (3⁄4″) provided.

Mount
It is installed between the shutoff valve and the

electric actuator.

 

Mounting lockers

Complete with twolockers.
The first one is for quick attachment of the electric actuator to the shutoff valve.
The second is installed if you need to protect the device in public places.

Water shut offScope of application

water supply

heating systems

 

Operating fluid

hot and cold water non aggressive liquids

 

Shutoff valve material brass

 

Thread type
BSP parallel (EN 10226-1, ISO 228) female by female threads (For other regions)

 

Thread size
DN20 (3/4“)

 

Operating pressure

10 bar

 

The temperature range of liquids with which the shutoff valve works

from +5°С to +120°С

 

Flange for connecting the electric actuator mount

Made according to the ISO 5211 standard.

 

Electric actuator torque
up to 8,5 Njm

 

Speed of water shut-off

up to 7 seconds
May take longer if the shutoff valve is contaminated.

 

Remote control

Manual control¤

·         button on electric actuator casin]

·         lever on mount

 

Temperature protection

up to 60°C at the place of installation

Anti-sabotage protectionProtection against spoofing

device authentication

 

Detection of communication failure

from 36 s

The interval for detecting

the loss of communication

depends on the hub

settings.

 

Tampering alarm

 

Alternative mounting locker

Protects against the dismantling of WaterStop.
Installed if it is necessary to secure the device in public places.

InstallationOperating temperature range
from 0°С to +60°СThe temperature range of liquids the shutoff valve is suitable for
from +5°С to +120°СOperating humidity
up to 95%
Power supplyBattery

4 × CR123A batteries Pre installed.

Battery life

up to 3 years

 

Optional external power supply

9 12 V⎓, 2 A

When external power is connected, the batteries become a backup power supply source.

Enclosure104 × 150 × 70 mm Full size (shutoff valve DN20 (3⁄4″) + electric actuator).

 

75 × 27 mm Dimensions of the DN20 (3⁄4”) shutoff valve.

 

Weight
1012 g Total weight (shutoff valve DN20 (3⁄4″) + electric actuator).

 

536 g Electric actuator weight.

 

476 g The weight of the DN20 (3⁄4”) shutoff valve.

Additional featuresScenarios

alarm reactions

·         security mode change reactions

·         scheduled actions

·         by pressing Button

·         by temperature

·         by pressing LightSwitch

 

Temperature protection 60°C at the place of installation

 

Indication of the shutoff valve status

LED indication

The colour of the LED illumination of the Ajax logo indicates the electric actuator status.

 

Lever position

The lever position indicates whether water supply is open or shut.

Complete setWaterStop Jeweller

4 × CR123A battery Pre-installed.

DN20 (3⁄4”) RuB valve

Depends on the selected kit 2 lockers for securing the electric actuator