The 38 °C stop is a detent, not a safety device · review
The cheapest thermostat in this hub, and the one that publishes the most: a centre distance, an inlet and outlet size, a detent temperature and the whole range it will deliver.
The bottom line More published figures than thermostats costing three times as much. What none of them publish — the minimum pressure — is still missing here.
A chrome wall-mounted shower thermostat over solid brass, with hot and cold inlets 150 mm apart at G 1/2, a G 1/2 outlet, a 38 °C detent and a stated output range of 20 to 50 °C.
150 mm centres. G 1/2 in. G 1/2 out. 20 to 50 °C.
That is enough to check the tap against your existing pipework before ordering, which is more than several thermostats here at three times the price manage.
A mechanical stop the hand feels, released by a button. It stops the handle being turned absent-mindedly into hot water. It is not a scald-prevention device, and where genuine scald prevention is required — a care setting, a nursery — the device that does it is a thermostatic mixing valve specified for the purpose.
Minimum operating pressure. A thermostatic cartridge balances hot against cold, and below a certain pressure it cannot hold a temperature. On a gravity-fed system that is the difference between a working shower and one that hunts. This listing does not say, and neither does most of the hub.
On sale from 34 € to 54 € on the German, French, Italian and Spanish Amazon stores at the time of checking.
Not found on the American and British Amazon stores, where the buy link falls back to a local search rather than to a page that does not exist.
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 between the hot and cold inlets — stated |
|---|---|
| Minimum operating pressure | Not stated by the maker |
| Temperature stop | 38 °C detent, within a stated output range of 20 to 50 °C |
| Cartridge | Thermostatic cartridge — stated; type and diameter not given |
| Outlets | One outlet at G 1/2 — stated |
| Finish | Chrome over high-precision solid brass, electroplated — stated |
| Amazon reference | B0CS3478WD (same reference on 4 Amazon marketplaces) |
| EAN | 6902210526322 |
A thermostatic cartridge balances hot against cold, and below a certain pressure it cannot. On a gravity-fed system a thermostat that needs 1 bar will run cold or hunt. Almost nothing on this shelf publishes it, including this one.
What the tap will deliver at either end — a cool rinse and a hot shower. It is a more useful statement than the detent alone, because the detent only says where the handle clicks.
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 ±12 centres · G1/2 DN15 · SafetyStop 40 °C · EcoStop 10 l/min first position · silencer fitted
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.
Best for: An existing wall installation whose centres are close to but not exactly 150 mm, in a bathroom where shower noise carries.
≈ £138 / 111 €
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 €
