Added to your order
Flood Prevention Bundle
- 1 x Shelly Flood Gen4
- 1 x Shelly Leak Sensor Cable
- 1 x Shelly BLU H&T ZB
- 1 x Shelly Cable Bracket
- 1 x Shelly BLU Gateway Gen3
72.60 EUR82.50 EURYou save 9.90 EUR
Now you will know the second there is a leak. Who is going to stop it?
Add the valve that shuts off your water by itself
When a sensor gets wet, the FrankEver valve on your main supply closes. You can be at work, asleep or on a plane and the water still stops.
4.1from 13 reviews on shelly.comFrankEver valve, all pipe sizes
How many
1 valves is the most this offer covers.
Added to your order
- 6.7M+ householdsuse Shelly
- Listed in FrankfurtPrime Standard, SDAX
- 100% verifiedbuyer reviews
- 14 daysto change your mind
What customers say
from 13 reviews on shelly.com (FrankEver valve, all pipe sizes)
"Well made, easy to install and connect. A visual indication of open/close would be a helpful addition"
J.Verified buyer, United KingdomReview of FrankEver Smart water valve DN15
"fantastic, easy and very good, perfect for control of input water in your house"
W.Verified buyer, SpainReview of FrankEver Smart water valve DN25
"Initial setup took a little bit, but after that it works good. A fast open and close mode would be great."
B.G.Verified buyer, GermanyReview of FrankEver Smart water valve DN25
Who you are buying from
Shelly is a listed European company, trusted in millions of homes
- 6.7M+households use Shelly
- 30M+Shelly devices sold
- 100+countries
- ListedFrankfurt Stock ExchangePrime Standard, ticker SLYG. Also listed in Sofia.
- IndexMember of the SDAXPart of Germany's DAX index family since April 2026.
Figures from shelly.com and Shelly Group investor relations, September 2026.
What happens when the sensor goes off and nobody is home
A sensor is the alarm, not the tap. If nobody is home, the water keeps running until someone reaches the stopcock.
Before
Sensors only
- You find out in seconds
- The water runs until someone gets there
- You pay for the floor, the ceiling below and the drying out
After
Sensors and the valve, 111.06 EUR
- You find out in seconds
- The valve closes the main supply by itself
- You come home to a wet floor, not a flooded flat
How it goes without it
- The washing machine hose splits while you are at work. The sensor sounds and your phone buzzes.
- You are 40 minutes away. You call a neighbour. Nobody has a key.
- You reach the stopcock. A split hose pushes about 10 litres a minute, so more than 400 litres are already in the floor and the ceiling below.
It links to the sensors already in your order and arrives in the same delivery.
What you get
FrankEver Smart Water Valve DN20, 111.06 EUR, added to the order you already have.
- Closes the water on its ownLink it to your sensors in the Shelly app. When one of them gets wet, the valve closes the main supply.
- Open and close it from your phoneTurn the water off when you leave for a holiday and back on when you land.
- Drinking-water certifiedStainless steel ball valve, NSF certified for drinking water. DN20 fits a 3/4 inch supply pipe.
- Still closes in a power cutRuns on a USB 5V supply and keeps a power reserve, so it can still close when the power is off.
- Temperature sensor includedA 1 metre sensor comes in the box, useful for frost warnings on pipes.
Good to know
- Fitted on the main supply pipe after the stopcock. Most people have a plumber do it.
- The valve connects over Bluetooth. A Shelly device that works as a Bluetooth gateway links it to your sensors and Wi-Fi.
Works with the smart home you already use
Shelly devices connect over Wi-Fi, Bluetooth, Zigbee and Matter. The valve is set up in the Shelly app, next to the sensors in your order.
Amazon Alexa
Google Home
Apple Home
SmartThings
Home Assistant
openHAB
FrankEver Smart Water Valve DN20 for 111.06 EUR
Added to your order
- Secure checkout on shelly.comPay by card, PayPal, Klarna or Google Pay.
- 14 days to change your mindSend it back within 14 days of delivery.
- Delivered by Shelly EuropeTracked courier delivery to your door.