Myson Standard Thermostatic Radiator Valve Replacement Head Only (TRV 2 WAY)

Good quality item, does the job, easy to fit

perfect replacement for my old (30 years+) valve head. Unscrew the old, straight on with the new, nice and easy.

I have Myson TRV's on almost all my radiators but they are now over 6 years old and are starting to fail. The problem is the plastic plunger in the head has disintegrated in some of them meaning that it no longer pushes the plunger in the valve itself and the radiator stays permanently on. This is a like-for-like replacement head which takes 2 minutes to fit and cures the problem inexpensively. I've docked one star as the plunger is still plastic so I can foresee the same thing happening again in a few years time.

Used to replace a damaged TRV. No tools needed. simply screw on finger tight & use to adjust radiator heat. Works perfectly. what more can I say?

Excellent

These were a perfect fit to replace one of our old British Gas units that had bust. A radiator was permanently off regardless of how the head was turned. Unscrewing the head I could see the plunger was no longer moving up and down when turned. Some downward effort was required to attach the new unit, pressing the valve pin in enough for the screw thread to engage but once attached, the radiator started working again! (It was actually the next radiator in the loop that was having the problem, from the previous one in the loop's broken head.)

I purchased these to replace broken valves of the same make but much older. These are simple to install, look decent and are a good price

I bought this TRV head to replace a similar one - shown at left in my photos - one of several fitted in 1999 to radiators in our CH system. The replacement is shown at right in the pictures. The original developed a common fault that left a pin in the head permanently out, so the rad was always off. I picked a replacement valve head that looked very similar, but it didn't work! If I turned it right down, the rad was still fully on. I queried this with Myson, asking if the new valve head was incompatible with their older TRV systems, but was told the new one was faulty, as the silver collar at the base wasn't deep enough, so they supplied a replacement. That new replacement works fine. In appearance it's almost identical to the one at left - deep collar and a black base. However, if you do have a new head with shallow collar and an original failed unit, it is possible to replace the collar on the new head, so that the new head will work: - remove the collar from the failed unit by cutting through the plastic holder above the collar with a junior hacksaw - carefully cut through the (shallow) collar of the new unit, remove it and bin it. First though, cover up the holes at the base with some low tack tape, to stop filings from entering the head. - push the old collar onto the base of the new TRV head. That's it - ready for use. So, be warned if you order one of these - the variant with shallow collar may not work, unless you perform some DIY on it!