The 38 °C stop is a detent, not a safety device · review
A thermostat that publishes its centre distance with a tolerance, its limited flow in litres per minute, and a built-in silencer — three things nothing else on this page states.
The bottom line The best-fitting thermostat on the page — centres, tolerance and connection all published — with a flow figure that, unlike its bath-mixer sibling, has no pressure attached.
A chrome surface-mounted shower thermostat with 150 mm centres (±12 mm), G1/2 DN15 connections, a SafetyStop at 40 °C, an EcoStop first position limited to 10 l/min, one outlet and a built-in silencer.
150 mm, ±12 mm. Existing wall connections are rarely exactly 150 mm apart, and a maker who states how far out the fitting can be turns the question into a tape-measure job rather than a gamble.
EcoStop at 10 l/min in the first handle position, released by a button. SafetyStop at 40 °C, released by a button. Both are defaults you can pass on purpose, which is the right way round for a limit that has to survive daily use.
The 10 l/min is published without a reference pressure — which the same maker’s bath thermostat, on this same site, does supply.
Every other thermostat in this hub clicks at 38 °C. This one clicks at 40. That is a genuine difference between makers, published rather than harmonised.
And it remains a detent: a mechanical stop, not a scald-prevention device. Where genuine scald prevention is required, a thermostatic mixing valve specified for the job is what provides it.
The only mention of noise anywhere in this hub. Flow noise in a fitting carries through a wall, and whether that matters depends on what is on the other side of yours.
On sale from 111 € to 152 € on the German, French, Italian and Spanish Amazon stores at the time of checking.
Also on sale on the American and British Amazon stores, in the local currency: the range above is measured on the euro stores only.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 5 September 2026. The live price is at the top of the page.
| Centre distance | 150 mm, with a stated tolerance of ±12 mm — stated |
|---|---|
| Minimum operating pressure | Not stated in this listing |
| Temperature stop | SafetyStop at 40 °C, released by a button on the handle — stated |
| Cartridge | Thermostatic cartridge — stated; type and diameter not given |
| Outlets | One — stated |
| Finish | Chrome — stated |
| Amazon reference | B01MG2DCK9 (same reference on 6 Amazon marketplaces) |
| EAN | 4011097799582 |
The first position of the handle is limited to a maximum of 10 l/min, and a button on the handle releases full flow. Like the detent, it is a limit you can pass deliberately — which means the saving happens by default and the full shower is still available.
It addresses flow noise in the fitting, which is what carries through a wall into a bedroom next door. It is the only listing in this hub to mention noise, and whether it matters depends entirely on where your bathroom is.
Shower thermostat · TurboStat cartridge · 38 °C detent · EcoJoy flow limiting with a release button · S-connections and metal rosettes
A thermostat built around a flow-limiting button you press to release full flow — and a water-saving claim published as a percentage with nothing behind it.
Best for: A household that wants a lower default flow without having to think about it, on a known standard wall installation.
≈ £105 / 96 €
Shower thermostat · 150 mm centres stated · 38 °C detent, lockable · plastic handle stated · takes any standard hose
A surface-mounted thermostat with a lockable 38 °C button and a plastic handle the maker defends on purpose — because limescale seizes metal ones.
Best for: A household where the temperature setting should stay put — the same shower, the same setting, every day.
≈ £40 / 50 €
Shower thermostat · solid brass stated · 38 °C detent · ½ in hose connection, no adapter · 2 rosettes and 2 S-connections
A solid brass thermostat that arrives with its rosettes, its S-connections and its fixings, from a German maker who answers the phone.
Best for: Replacing a shower mixer on existing wall connections, where everything should arrive in one parcel and the maker should be reachable.
≈ £65 / 61 €
