The Shelly - Neo Smart Water Valve NAS-WV02W is a professional smart water valve designed for potable water systems, featuring ultrasonic measurement technology, remote control, and automatic leak protection. The NSF-certified brass DN25 valve is recommended for apartments, holiday homes, offices, or commercial buildings where water consumption monitoring, remote intervention, or irrigation control may be required.
The device measures water flow, pressure, temperature, and total consumption in real time. Thanks to its ultrasonic measurement system, it contains no mechanical wear components. This ensures long service life, high accuracy, and minimal maintenance requirements. Measured data can be displayed in detailed daily, weekly, or monthly charts within the Shelly Smart Control application.
Thanks to the Shelly collaboration platform, the Neo Smart Water Valve supports both Wi-Fi and Bluetooth connectivity, allowing easy integration into smart home systems without requiring a dedicated hub. Working together with the Shelly ecosystem, it can automate irrigation, optimize water usage, and provide leak protection. When paired with a Shelly Flood sensor, the system can automatically shut off the water supply if a leak is detected.
The device features a fast opening and closing mechanism, ensuring immediate response to manual control or automations. The local web interface and MQTT support enable full local integration with advanced automation systems.
The Neo Smart Water Valve is especially useful for applications such as remote water supply control, holiday property or rental supervision, precision irrigation automation, detection of unusual water consumption patterns, and prevention of water damage caused by leaks.
About the Shelly Brand
Shelly is one of the most recognized and innovative smart home brands in Europe, developed by the Bulgarian company Allterco Robotics. The manufacturer is particularly strong in the market of Wi-Fi and Bluetooth-based smart devices, whose key advantage is that they generally operate without a central hub, allowing quick and simple installation with only a working Wi-Fi network.
The Shelly product portfolio is extremely broad and includes relays, sensors, smart plugs, lighting solutions, and professional DIN rail mounted devices. The brand places strong emphasis on local control, meaning devices can continue operating without internet access, providing enhanced reliability and data security.
Shelly devices offer advanced integration capabilities with native support for REST API, MQTT, and Webhook communication, making them easy to integrate with platforms such as Home Assistant, openHAB, Node-RED, and other DIY systems. They are also compatible with popular cloud platforms including Google Home, Amazon Alexa, and Samsung SmartThings.
The manufacturer continuously develops its products, and the latest generations already include Bluetooth gateway, Wi-Fi range extender, and additional networking functions. Shelly products are especially popular among advanced users and installers while remaining easy enough for beginners.
Main Product Features
- NSF-certified valve: Certified brass construction suitable for potable water systems.
- Ultrasonic measurement system: Precise measurement without mechanical moving parts for long lifespan.
- Real-time monitoring: Continuous tracking of water flow, pressure, temperature, and consumption.
- Automatic leak protection: Automatic water shutoff when used with Shelly Flood sensors.
- Wi-Fi and Bluetooth connectivity: Direct network connection without requiring a hub.
- MQTT and local web interface: Full local integration with advanced automation systems.
- Detailed consumption statistics: Daily, weekly, and monthly consumption charts.
- Fast opening and closing: Immediate response to automations or manual control.
- IPX7 protection: Resistant to moisture and splashing water.
- Smart scene support: Suitable for irrigation, water protection, and energy optimization automations.
Smart Home Protocols and Platform Compatibility
- Supported protocols: Wi-Fi 2.4 GHz, Wi-Fi 5 GHz, and Bluetooth 5.0.
- Shelly Smart Control support: Full control from Android and iOS applications.
- MQTT support: Integration with Home Assistant, Node-RED, and other systems.
- Local web interface: Local access without internet connection.
- Bluetooth connectivity: Simple configuration and local communication.
- REST API and automation: Advanced integration options for automation servers.
- Shelly automations: Compatible with Shelly Flood and other Shelly sensors.
- Cloud-free operation: Fully functional local control without internet access.
Smart Functions
- Remote water ON/OFF control from mobile application.
- Real-time water consumption monitoring.
- Ultrasonic flow measurement.
- Water pressure monitoring.
- Water temperature measurement.
- Daily, weekly, and monthly consumption statistics.
- Automatic leak protection using Shelly Flood sensors.
- Consumption and pressure alerts.
- Automatic operation recovery after power outage.
- Irrigation automation.
- Remote property monitoring.
- Local web configuration.
- MQTT-based automations.
- Manual physical control button.
Technical Specifications
- Model: NAS-WV02W
- Valve type: DN25 intelligent brass water valve
- Certification: NSF potable water certification
- Housing and valve material: Brass
- Protection rating: IPX7
- Thread standard: G 1-1/4 BSPP
- Included adapter: DN25 (G1 R)
- Measurement technology: Ultrasonic, without moving parts
- Measured values: Flow rate, pressure, temperature, total consumption
- Flow measurement accuracy: ±0.38 L
- Pressure measurement accuracy: ±1 kPa
- Temperature measurement accuracy: ±0.5 °C
- Temperature range: Between -10 °C and +65 °C
- Supported units: °C/°F, L/gal/m³/ft³, PSI/kPa/bar
- Connectivity: Wi-Fi 2.4 GHz, Wi-Fi 5 GHz, Bluetooth 5.0
- Mobile application: Shelly Smart Control
- MQTT support: Yes
- Local web interface: Yes
- Automation support: Shelly Scenes and custom automations
- Application areas: Residential, commercial, and industrial water systems
Additional information
| General |
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| Smart home protocols |
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| Bluetooth | yes, Bluetooth gateway |
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| Remote control, smart control |
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| More features |
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| Colour | white |
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| Compatible with Matter standard | no |
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| Device power supply | 5V DC |
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| Direct local remote control | yes |
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| Ethernet (RJ-45) | no |
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| Google | Hardware > Plumbing > Plumbing Fittings & Supports > Plumbing Valves |
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| History / Event log | in app |
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| IP rating | IPX7 |
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| LAN mode | yes |
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| MQTT support | yes |
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| MSRP | 259 € |
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| Notification functions | email, in app |
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| Operating humidity range | 1% – 95% RH |
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| Operating temperature range | -10℃ – 60℃ |
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| Physical on/off button on device | yes |
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| Plug&Play installation | yes |
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| Power supply | DC |
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| Product category | valve |
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| REST API support | yes |
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| RF transmitter / receiver | no |
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| Schedulers, timers | yes |
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| Sensor | equipped with water quantity measuring sensor, temperature sensor |
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| Size | 195 x 102 x 78 mm |
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| Size 1 (cm) | 19,5 |
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| Size 2 (cm) | 10,2 |
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| Size 3 (cm) | 7,8 |
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| Smartphone app | Shelly app |
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| Supported protocols | Bluetooth, Wi-Fi |
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| Thread | no |
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| Type of the product | irrigation, valve |
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| Web admin interface | almost the same functionality as the app |
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| Wi-Fi | yes: 802.11 b/g/n/ax (2.4GHz and 5GHz) |
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| Zigbee | no |
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| Z-Wave | no |
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| Dimensions | 19,5 × 10,2 × 7,8 cm |
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