by NOVA
Oct 17, 2026
A water sensor shut off valve is the motorized valve that closes the pipe after a leak signal. The probe only reports water. This page stays on the closer: pipe size, supply voltage, the printed Wi-Fi or Zigbee bundle, and whether a sensor is already in the box.
Retail results mostly show whole-home monitors that learn flow. A channel line still has to name the actuator that turns the valve.
The closer turns a pipe valve shut when a leak signal says water is where it should not be.
On a distributor sheet the words get glued together. Someone hears “water sensor” and orders a puck.
Someone else hears “shut off valve” and orders a motor on the pipe. The purchase works when those two objects are quoted as a pair, or when the printed box already contains both.
IAPMO’s note on ANSI/CAN/IAPMO Z1349 describes devices that watch a plumbing system and can shut the supply when a leak is detected. That is the device class. It is not a listing mark for a catalog number on this site.
A whole-home monitor on the first page of search can close water because it watches flow or pressure inside the pipe. A point-of-use kit closes water because moisture at a heater or a washer tells an actuator to move.
Both are shutoff products. They answer different lines on a quote.
One brand’s comparison table puts alert-only detectors in a different row from the shutoff that closes the water. Use that split when a buyer pastes one phrase over both objects.
An automatic water shutoff valve, in buyer mail, often means “stop the supply without a person at the handle.” Keep the phrase, and still ask which signal starts the move.
The leak signal arrives first, and the actuator then turns the valve toward closed.
A motorized ball valve uses a ball with a hole through it. A quarter turn takes the hole out of the flow path. Other quarter-turn bodies exist, and the live page also names a butterfly valve in the application cell.
From the field: A Hubitat user asked for one valve that both follows leak sensors and closes on flow or pressure anomalies, because the products they found kept doing only one of those jobs. — https://community.hubitat.com/t/smart-water-main-valve/147503
That split is the buying problem. Pressure-learning monitors treat a long flow as a possible leak. The actuator in this phrase waits for a leak signal and then moves.
The live controller prints the same order. It links with smart water sensors, shuts off when leakage is detected, and the app pushes an alarm at the same time. Whole-house linkage is named on that page as a supported pattern, not as a room count.
On the printed page, Alexa and Google Home take voice commands once that bundle’s network is up. A timer can open or close on a schedule, including timed garden watering.
Those are extra jobs on the same motor. They do not replace the leak path.
If power is only a wall adapter, say so in the site survey. Some other shutoff brands advertise battery backup. This page does not copy that claim onto the live model, because the fetched description does not print a battery.
Pipe size, supply voltage, and the sensor bundle decide whether the line can be ordered.
Plumbers on a public thread keep hitting the same wall. A consumer shutoff they like stops at a pipe size their main has already outgrown.
Radio comes second. If the body cannot meet the pipe, an app account will not finish the joint.
| Bundle | What the WV-QY-WH page prints | What to ask before substituting |
|---|---|---|
| Wi-Fi version | Wi-Fi water sensor included; connects to 2.4G WiFi and the mobile app when no Tuya ZigBee gateway is present | Can the site use 2.4G WiFi? |
| ZigBee version | Requires a Tuya ZigBee gateway and then the Smart Life app | Is that gateway already in the project? |
The Wi-Fi water sensor belongs to the Wi-Fi sentence. Leave it off the ZigBee sentence. The ZigBee sentence is about the Tuya ZigBee gateway.
Printed supply voltage is 12V/1A.
That cell is the electrical field for this model. It is a low-voltage adapter callout. Leave other brands’ mains-voltage actuators on their own sheets.
Remote control on the same page covers water/gas supply for farmland and household appliances through the Smart Life or Alexa app, with a stable network. The ZigBee version still needs the gateway before that remote path exists. Write the gateway as a project item when that bundle is the one being quoted.
Sharing is printed as well. Several phones can control one valve, or one phone can control several valves.
Mention it when the buyer asked for more than one operator. Skip it when the only question is leak close.
The sensor noun, the sensing path, and the smoke class already have their own pages, so this one leaves their explanations in place.
A water leak sensor is the probe or cable that reports water. It does not turn the pipe. Open that page when the line item is the detector itself.
How a water sensor works follows the dry gap, the moisture path, and the event leaving the probe. The actuator here starts after that event. Probe physics stays on that page.
A smart home smoke detector is a different alarm class. That page may mention this valve because the catalog sits nearby. Smoke chambers, gas-alarm heads, and carbon-monoxide heads are not renamed into pipe closers here.
Search also asks how to turn a water sensor off. That is usually a chirp or an app alert, not a request to motorize a pipe.
Send the silence question back to the sensor pages. Keep the motor question here.
WV-QY-WH is printed as a WiFi water and gas pipeline auto shut-off valve controller, so the quote keeps both fluids.
The description covers remote control of water/gas supply, voice control, water pipe ball valves, electric or manual switches, and various gases. Water valves, gas valves, pool filling, and farm irrigation are on that list. No gas species is added past the words “various gases.”
The spec table is short. Copy the cells. Leave them in the units the page already uses.
| Printed cell | Value on the page |
|---|---|
| Product model | WV-QY-WH |
| Supply voltage | 12V/1A |
| Valve pressure | 6MPa |
| Torque | 30-60kg.cm |
| Closing time | 5-10s |
| Opening time | 5-10s |
| Temperature | -10-65℃ |
| Humidity | less than 95% |
| Valve specifications | 1 inch, 1.25 inch |
| Application | spanner valve, butterfly valve |
Printed valve pressure is 6MPa.
Printed torque is 30-60kg.cm.
Printed closing time is 5-10s.
Printed opening time is 5-10s.
The temperature cell reads -10-65℃.
Humidity is listed as less than 95%.
Those sentences repeat the table so a quote sheet can lift them. They belong to this model’s page. They are not an inverter rating, and they are not a stand-in for a different pipe size.
The application cell says spanner valve and butterfly valve. The description also says the controller works with water pipe ball valves.
Name the element the project actually has. A motorized ball valve still needs a handle pattern the actuator can drive.
If the existing valve is a stuck gate valve, replace that body before you promise a motor close. Owner threads treat gate valves as a poor match for clip-on actuators, and this page’s application line does not list a gate valve.
Valve specifications print 1 inch and 1.25 inch. A buyer with a larger main needs a different body.
Say that in the reply. Do not stretch the cell.
Four fields settle the line: pipe size, voltage, the printed protocol bundle, and whether a separate sensor is required.
Match the pipe to 1 inch or 1.25 inch before talking about apps. A larger main is a different product conversation. Record the refusal next to the size, so the next email does not reopen it.
Then name the bundle. Wi-Fi means the Wi-Fi water sensor and 2.4G WiFi.
ZigBee means a Tuya ZigBee gateway is already planned. Swapping those sentences builds a support ticket.
Then ask whether more sensors are still required. The Wi-Fi version is printed with a Wi-Fi water sensor.
Leakage linkage still links with smart water sensors, so a larger layout can add sensors. Extra sensors are a quantity. They are not a second valve unless another pipe must close on its own.
Irrigation timing and shared phones stay in the note only when someone asked. A leak-only buyer does not need a garden schedule stuffed into the same line.
Insurance mail sometimes asks for an automatic shutoff and then rejects a sensor that only notifies. A carrier page describes flow-based devices that alert and shut the supply, and it tells the reader to confirm approval.
Bring the carrier’s wording to the call. The catalog page cannot answer that approval.
The live fit is the MOES water and gas pipeline valve controller, model WV-QY-WH, filed under Other Smart Devices.
Use it when the quote needs a motorized closer for a water or gas pipe, app and voice control as printed, and an automatic close after a leak signal. Set it aside when the buyer wants only a floor probe, only a smoke alarm, or an off-grid inverter.
The keyword file once parked this phrase on an inverter hub. The live breadcrumb does not. The category is Other Smart Devices.
Read the cells on the MOES water and gas pipeline valve controller before the line ships. If a later edit changes voltage, size, or the sensor sentence, the quote follows the page, not this article.
It is a valve with an actuator that closes the pipe when a sensor reports a leak. The sensor finds the water. The valve stops the supply.
A motor turns a quarter-turn valve until the bore leaves the flow path. On this controller the move starts after leakage linkage receives a leak signal.
A carrier note treats shutoff on the water line as a way to stop supply while the leak is still limited. Whether it is worth buying still depends on the pipe you can fit and on what that carrier will accept in writing.
The pipe is a size the body cannot meet, the Wi-Fi bundle is ordered where only a gateway plan exists, or a sensor-only line is expected to close water. Owner threads also worry about a valve body that feels weak, which is a mechanical question separate from the app.
The Wi-Fi sentence on WV-QY-WH includes a Wi-Fi water sensor and a direct 2.4G WiFi connection. The ZigBee sentence does not say that. It requires a Tuya ZigBee gateway.
The same page prints water and gas. It names gas valves and various gases beside water valves, pool filling, and farm irrigation. Quote gas only inside that printed list.
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