Verified compatibility
We test every device for these ecosystems. For non-standard integrations contact us before ordering.
- Home Assistant
- Zigbee
- Matter
- KNX
- Wi-Fi
Compatibility
Works with these ecosystems
Protocols
- Wi-Fi
- BLE
Ecosystems
- Home Assistant
- Amazon Alexa
- Google Home
What it is, who it's for, what it does
About this product
The NEO Smart Water Valve NAS-WV02W is a motorized shut-off valve that monitors and controls water on the main line. Its DN25 brass body with G 1-1/4 BSPP thread and an included DN25 (G1 R) adapter installs on drinking-water plumbing, carrying NSF certification and IPX7 protection.<br><br>An ultrasonic measurement system with no moving parts reads flow, temperature, pressure and consumption with accuracy of 0.38 L, 1 kPa and 0.5 degrees C. Wi-Fi 2.4/5 GHz and Bluetooth work without a hub, while control runs from the Shelly Smart Control app, a local web interface or MQTT.<br><br>Paired with Shelly Flood sensors, the valve closes the main line automatically when water is detected and supports scenes for irrigation and leak protection.
- DeliveryFree from 1500 MDL
- Returns30 days to return
- Warranty24 months
15+projects delivered300+devices installed3 yearslocal-first experienceChișinăushowroom Columna 153Book a showroom visit →
CasaSmart essentials
What it works with, what it needs, what you can do
Install & requirements
What you need on your side and what we deliver.
- Zigbee hub or Matter gateway for wireless variants
- 65 mm back-box or DIN panel for wired variants
- Local setup on Home Assistant — included in install
Smart scenarios
Three typical automations we set up after the install.
- 01Morning: warm light + blinds up + climate at 22 °C
- 02Leaving: lights off, arm sensors, close the gas
- 03Evening: warm ambient + cinema scene
Where it works
Use cases
A pipe bursts in a Chisinau apartment bathroom while the owner is at work; the NAS-WV02W shuts the water off at once.
The valve closes the main line when a Shelly sensor detects water.
A family tracks monthly usage and catches a slow leak from an unusual rise in overnight flow.
Ultrasonic metering shows flow rate and total consumption in the Shelly app.
Before a holiday, the user closes the water from their phone for the whole time away.
Water is closed remotely before leaving and reopened on return.
Analytics
See consumption — save on bills
Real-time consumption tracking via the eWeLink app. Daily, weekly and monthly history helps identify the most energy-hungry devices.
For the installerTechnical specificationsfull spec · wiring · datasheet
For the installer
Technical specifications
full spec · wiring · datasheet
Physical
- Valve material
- Brass
- Valve size
- DN25
- Thread
- G 1-1/4 BSPP, DN25 (G1 R) adapter included
- Protection rating
- IPX7
Other
- Measurement
- Ultrasonic, non-mechanical (flow, temperature, pressure, consumption)
- Volume accuracy
- 0.38 L
- Pressure accuracy
- 1 kPa
- Certification
- NSF (drinking water)
Environment
- Temperature accuracy
- 0.5 degC
- Water temperature range
- -10 to 65 degC
Wireless
- Wi-Fi
- 2.4 GHz and 5 GHz
- Bluetooth
- 5.0 LE
Connectivity
- Local control
- Web interface, MQTT
Support
Frequently asked questions
What pipe size fits the NEO NAS-WV02W valve?
The body is DN25 with a G 1-1/4 BSPP thread, and a DN25 (G1 R) adapter is included in the box for common plumbing installations.Does it need a separate hub?
No. The valve connects directly over Wi-Fi 2.4/5 GHz and Bluetooth and is controlled from the Shelly Smart Control app without a hub.How does it shut water off automatically on a leak?
Paired with Shelly Flood sensors, the valve closes the main line the moment a sensor detects water.What can the valve measure?
The ultrasonic system with no moving parts measures flow, temperature, pressure and total consumption, with accuracy of 0.38 L, 1 kPa and 0.5 degrees C.Does it integrate with Home Assistant?
Yes. Through MQTT support and the local web interface, the valve can connect to Home Assistant and local automation servers.Is it suitable for drinking water?
Yes. The brass body is NSF-certified for drinking-water systems and carries IPX7 protection for humid environments.
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Manager guidance
Questions about this product?
A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.
+373 60 944 922Updated: · reviewed by CasaSmart Expert Team