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TMV advice and guides
Straightforward articles about thermostatic mixing valves: how they work, how often to test them and how to keep your records in order.
Commissioning a new TMV: what should happen on day one
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.
Repair or replace? When an old TMV has had its day
Most 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.
Bringing TMVs back after a quiet spell or shutdown
Christmas closures, empty rooms and refurbs all leave valves sitting idle. What to check before people start using those outlets again.
Hard water and TMVs: limescale, strainers and descaling
Limescale is the number one reason TMVs stop working properly. How it gets in, the signs to look for, and what regular descaling actually involves.
TMV asset registers: what auditors want to see
When someone asks to see your TMV records, a tidy register answers most of their questions before they've finished asking. What to put in one.
Why TMV outlet temperatures drift (and how to stop it)
Your valve was set to 41°C. Now it's giving 43°C, or 38°C. The usual reasons a TMV's outlet temperature drifts, and what actually fixes it.
TMVs for social housing landlords: what you need to know
Hundreds of homes, valves hidden behind bath panels, and tenants who need to let you in. How housing providers can get on top of their TMVs.
TMVs in schools and nurseries: a practical guide
Small hands, big hot water systems. Which outlets in a school or nursery need TMVs, which type to fit, and how to fit testing around the school year.
Scalding risk in care homes: where TMVs fit in
TMVs are a big part of keeping residents safe from hot water, but they're not the whole story. What HSE expects in care homes, and where valves fit in.
Your TMV failed its fail-safe test. What now?
A failed fail-safe test is the one result you can't sit on. What it means, what to do with the outlet today, and how the valve usually gets put right.
TMV2 vs TMV3: which valve do you actually need?
Two certification schemes, two very different kinds of building. What TMV2 and TMV3 actually mean, and how to choose the right valve for each outlet.
How often should TMVs be serviced?
Once a year, every six months, or more? How to set a sensible testing interval for your mixing valves, and why new valves need checking early.
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