Any plumbers on here?

[t121anf]

Question about radiators.

Should the lockshield be on the flow or return side of the radiator?

Mine all seem to be flow, but this feels wrong to me.

[ZebraDriver]

In what way does it feel wrong?

[ZebraDriver]

Radiator valves and modern TRV do not require the water flow to be in a particular direction - you can fit them at any convenient end. It is probably better to have the TRV away from doors, draughts and the likes to avoid the thermostatic part being fooled by "fake" temperatures.

[t121anf]

In my simple mind, if you want to stop something getting in you do so by stopping it before it enters rather than afterwards.

So imo the control value should be on entrance (flow) rather than exit (return/lockshield).

Just seems wrong, but hey ho.

Oh btw if it matters and I can't see that it would, no TRVs here, still on old school ones. One day i'll upgrade them.

[janner_10]

https://bfy.tw/7sHp
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Yamaha FZS600 (Now gone to heaven) > CBR600F4i (SOLD) > '99 YZF-R1

[MCN]

[Hahadumball]

either way, ill always fit to the right because it looks better

thats if its modern... if not its on the flow side (Y)

hth
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Fin: no matter how much I look at It I can't understand what was going through my head, all I remember is going about 80 and redlining it to stop it seizing.
360 Deg... Five 1/4 turns. :- Teflon-Mike 18 Jan 2015

[Dave500]

You should fit the TRV away from anything that cause a lower temperature (windows, doors ect). Best bet is to put it on the side which is the closest to the centre of the room.
Oh and don't put one on the radiator that is near your thermostat lol
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Bye bye Z hello Versys

[MCN]

And always leave one radiator with no TRV to give your boiler a place to put water when all the TRVs close.
A small single radiator is all it needs.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.