A mixing valve is only as good as the way it's chosen, fitted and set up. We help you pick the right valve for each outlet, fit it in the right spot and commission it properly from day one.
They're both certification schemes rather than brands. The one you need depends on who's using the water and what kind of building it is.
For homes and similar settings. Valves are tested against BS EN 1111 (high pressure) or BS EN 1287 (low pressure) and certified under the TMV2 scheme.
For healthcare and care settings, built to the NHS performance specification behind the TMV3 scheme, with tighter performance and fail-safe requirements.
Some valves are dual-certified for both TMV2 and TMV3. That can make life simpler on mixed sites. Read more in our TMV2 vs TMV3 guide.
Residents, patients, young children and people with reduced feeling all point towards TMV3 and tighter set points.
A bath, shower, basin and bidet each have different typical maximum temperatures and flow needs.
We check whether your system is high or low pressure, and whether pressures are balanced, so the valve can actually perform.
Mixed water is in the Legionella growth range, so we fit valves as close to the outlet as practical to keep that pipe run short.
A valve sealed behind tiles is a valve nobody services. We fit with access panels in mind so testing stays easy.
Your risk assessment should drive this. Sometimes a different control fits better, and we'll say so.
Lots of buildings were fitted out before anyone thought about scalding risk, or have changed use since. A care home in a converted house, say, or a school that's added a nursery.
We retrofit TMVs under basins, behind bath panels and in shower risers, usually with very little disruption. Where there's space, a valve that's built into the tap or shower is often the neatest fix.
We'll always tell you if a service will do the job instead.
Commissioning gives every valve a baseline. Future tests are compared against it, so it's worth doing carefully.
Hot and cold supply temperatures and pressures recorded at the valve.
Mixed temperature set for the outlet type and the people using it.
Cold supply isolated to confirm the valve shuts down as it should.
Tagged, logged and scheduled for its first in-service test.
Not always. It depends on who uses the outlet and what your risk assessment says. In care and healthcare settings, outlets used by residents or patients will usually need one. In an office, a staff kitchen tap might not.
Usually, yes. Under-basin TMVs are one of the most common retrofits. We just need enough space to fit it and get back to it for servicing.
If the building now houses vulnerable people, or it's a healthcare setting, TMV3 is usually what's expected. Otherwise a working TMV2 valve in a domestic-type setting can be fine. We'll look at each outlet rather than recommending a blanket swap.
We commission it, record the readings and add it to your asset register. Then it needs in-service checks in the first few months, and regular servicing after that.
A new TMV is only as good as the way it's set up. What should happen when a valve is commissioned, and the paperwork you should get afterwards.
Read the articleMost tired TMVs can be brought back with a service kit. Some can't. How to tell which is which, and what to think about before you replace.
Read the articleTwo certification schemes, two very different kinds of building. What TMV2 and TMV3 actually mean, and how to choose the right valve for each outlet.
Read the articleTell us what you've got and what's changed. We'll suggest the right valves and quote for the job.