Neo Smart Water Valve NAS-WV02W brass water shut-off valve, front view
Neo Smart Water Valve, diagonal view
Neo Smart Water Valve with the power cable connected
Neo Smart Water Valve box contents: valve, fittings and power supply
Neo Smart Water Valve, view from the brass connection
Neo Smart Water Valve with the brass adapters fitted

Neo Smart Water Valve: smart water shut-off valve Powered by Shelly

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Regular price€405,01
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  • 3 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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Neo Smart Water Valve: smart valve that shuts off the water and measures its consumption

The Neo Smart Water Valve is fitted on the cold water supply and closes it from your phone or automatically when a Shelly sensor detects a leak. It also measures the flow, pressure and temperature of the water. It is Powered by Shelly: at Q-Tech we set it up in the Shelly app together with its sensors.

We offer it for ½", ¾" or 1" pipe at the same price: the valve is 1" (DN25) and for ½" and ¾" we supply it with brass reducers.

Summary

TypeMotorised water shut-off valve with ultrasonic measurement
Brand and modelNeo Smart Water Valve NAS-WV02W, Powered by Shelly
UseCold water supply of homes, second homes, rental flats and business premises
ConnectionDN25 with G1 adapter included; ¾" and ½" variants with Q-Tech brass reducers
MeasuresFlow, consumption, pressure and temperature of the water
Connectivity2.4 and 5 GHz Wi-Fi and Bluetooth 5.0, no gateway
Power5 V DC, 2 A, power supply included
Warranty2-year manufacturer's warranty
Q-Tech installationSet-up, alerts and shut-off scene by the on-site hourly Expert Technician

What is the Neo Smart Water Valve?

The Neo Smart Water Valve from Neo is a drinking-water brass valve that opens and closes the water supply with a motor and measures the water ultrasonically, with no moving parts. It has the ShellyX chip, so it is controlled from the Shelly Smart Control app.

What problem does it solve?

A leak from a washing machine, a water heater or a pipe can flood the home in a few hours, especially when nobody is in. A sensor alerts you, but someone still has to go and close the stopcock.

With the Neo Smart Water Valve and a Shelly Flood sensor, the water shuts off automatically as soon as the leak is detected and you get the alert on your phone. You can also see in the app how much water you use each day and create alerts for consumption, pressure or temperature.

Technical data

BodyNSF-certified brass for drinking water
DiameterDN25 (1" pipe)
Body threadG 1¼ BSPP, with DN25 (G1 R) adapter included
Opening and closing time12 seconds
Pressure measurement range0 to 200 psi (about 13.8 bar), accuracy ±1 kPa
Volume accuracy±0.38 l
Measured water temperature−10 to 65 °C, accuracy ±0.5 °C
Operating temperature1 to 65 °C
ProtectionIPX7
Standby consumption0.3 W
Dimensions195 × 78 × 102 mm
Local accessWeb interface and MQTT, also without the cloud

Data according to Shelly.

Models and data by variant

ConnectionWhat is includedSKUEAN
1" (DN25)Valve, DN25 (G1 R) adapter and 5 V power supplySHELLY-NAS-WV02W6924715900377
¾" with reducersThe same plus two 1" to ¾" brass reducersSHELLY-NAS-WV02W-34Q-Tech kit, no EAN of its own
½" with reducersThe same plus two 1" to ½" brass reducersSHELLY-NAS-WV02W-12Q-Tech kit, no EAN of its own

Compatibility and limits

  • Cold water only: Shelly states it is not suitable for hot water.
  • It closes automatically with a Shelly Flood Gen4 or Flood S Gen4 sensor through a scene in the Shelly app.
  • It needs a socket nearby for its 5 V power supply; according to Shelly it also accepts an external 5 V, 2 A power bank.
  • With no consumption, the pressure shown is absolute: subtract atmospheric pressure to get the water pressure, according to Shelly.
  • Shelly does not publish the maximum working pressure or maximum flow: ask us before fitting it to an installation with a booster pump set or serving several homes.

When this product is not the right choice

If you need to shut off hot water or a pipe larger than 1", look for a solenoid valve rated for that temperature or diameter. If you only want to know there is a leak, without shutting off the water, a sensor from the Shelly water leak detection collection is enough.

Frequently asked questions

Which connection do I need?

The one for your cold water supply pipe: ½", ¾" or 1". If in doubt, send us a photo of the stopcock on WhatsApp.

Does it shut off the water automatically if there is a leak?

Yes, with a Shelly Flood Gen4 or Flood S Gen4 sensor and a scene in the Shelly app.

Can I install it myself?

The connection to the main pipe must be made by a plumber. Q-Tech sets it up and pairs it with the sensors.

What happens if the power goes off?

In the app you choose how the valve behaves when the power comes back, according to Shelly. It also has a button to open and close it by hand.

What is the delivery time?

We have it in stock at our warehouse.

Q-Tech installation and support

A plumber fits the valve on the cold water supply. Our on-site hourly Expert Technician adds it to the Shelly app, pairs it with the Flood sensors and leaves the shut-off scene tested. For remote adjustments there is the technical call.

The sensors are in Shelly water leak detection, and you can ask us on WhatsApp.

Documentation

Availability and lead times: this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time.

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