SCREWFIX THERMOSTATIC RADIATOR VALVE TRV £2.99
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SCREWFIX THERMOSTATIC RADIATOR VALVE TRV £2.99

64
Found 29th Jan 2014
I know these are meant to control the heat but forget that for now and add some heat instead please! Hot deal I think. Good reviews too!

64 Comments

Limited use as most will need an angled TRV ?

Heat added, very good price IF it suits your installation.

Original Poster

andynicol

Limited use as most will need an angled TRV ?Heat added, very good price … Limited use as most will need an angled TRV ?Heat added, very good price IF it suits your installation.



Yes, I was thinking the same myself. Good for towel rails though and if you are installing from new!

Heat added good on off switch for a towel rail
angled ones with lockshields are £8 which is a bargain
bought 3 sets the other day with 6 threequarter inch to half inch
bushes
bushes were 89p perfect for the old system I fitted them on
as the pegler belmont valves were leaking
fit your bush first with loctite 55 then fit the valve... siya

mrtech007

Heat added good on off switch for a towel railangled ones with … Heat added good on off switch for a towel railangled ones with lockshields are £8 which is a bargainbought 3 sets the other day with 6 threequarter inch to half inchbushes bushes were 89p perfect for the old system I fitted them onas the pegler belmont valves were leakingfit your bush first with loctite 55 then fit the valve... siya

glad you shared that with us

Heat added because it's a bargain.

Pegler Terrier iTemp i30 is what you need. Control heat of each room via remote or via PC software.

Hopefully they will release smartphone enabled PRC's in the near future.

I have radiators and they're warm.
You should have some heat too

PasPer2

Pegler Terrier iTemp i30 is what you need. Control heat of each room via … Pegler Terrier iTemp i30 is what you need. Control heat of each room via remote or via PC software.Hopefully they will release smartphone enabled PRC's in the near future.



For the initial outlay on the equipment, how much would you save on heating costs??

Good find

Heat, I got these installed all around my house a couple of years ago work perfect!
Edited by: "sconto" 29th Jan 2014

I really wouldn't bother with cheap rad valves, they are a false economy. They will soon stop working so you are left with the hassle of trying to source a replacement heat (nearly impossible on cheap models), or replace the whole valve.

For the sake of a few quid just put a Danfoss RAS-C2 on it, looks nice and will keep on working.

Original Poster

themorgatron

I really wouldn't bother with cheap rad valves, they are a false economy. … I really wouldn't bother with cheap rad valves, they are a false economy. They will soon stop working so you are left with the hassle of trying to source a replacement heat (nearly impossible on cheap models), or replace the whole valve.For the sake of a few quid just put a Danfoss RAS-C2 on it, looks nice and will keep on working.



Moving to Denmark in a few weeks. Incidentally literally a couple of kilometres down the road from Danfoss HQ. Will let you know if I can source you some cheap RAS-C2's But being Denmark, prices are more likely to be double what they are here Nice that Screwfix now exports to Europe too!

Are TRV's really thermostatic or just glorified taps ?

5lugger

For the initial outlay on the equipment, how much would you save on … For the initial outlay on the equipment, how much would you save on heating costs??



Look at Tado and Honeywell Evo Home, they're the better systems, as they're zoned, you can control heating via Internet and it knows when you're coming home and will get the heating ready, the typical savings are shown on their sites. British Gas Hive is OK but cheap because it has limited scope to control the heating.

fishmaster

Look at Tado and Honeywell Evo Home, they're the better systems, as … Look at Tado and Honeywell Evo Home, they're the better systems, as they're zoned, you can control heating via Internet and it knows when you're coming home and will get the heating ready, the typical savings are shown on their sites. British Gas Hive is OK but cheap because it has limited scope to control the heating.



Just had a look at Tado, looks interesting and have requested more information. I'm trialling something similar, although no-where near as polished. It's amazed me how incredibly slow the big manufacturers have been to implement smart controls, I had customers requesting them 4 years ago.

I've also had a play with Hive, It's actually really good value when you consider it's from British Gas. I've been told if you're on their Homecare package and your existing programmer breaks, you can upgrade to Hive for £99.

Angled with Lockshied

Is it recommended to change the lockshield also if you have drained your system and are doing the TRV anyways? I think my TRV's are old as it makes heck of a noise which sounds like rushing water. The radiators are fully bled. Any comments would be great regarding this.

sherbolton

£10.77 for a programmable trv at amazon … £10.77 for a programmable trv at amazon http://www.amazon.co.uk/gp/product/B004LAT0J2/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A318N95IYHBWWS



These look interesting, I've been looking at the eq3 max ones as they allow wifi control, but I don't understand enough about heating systems to know if I should then have a boiler control / thermostat as well (maybe Hive...?)
Currently, we only have a very basic mechanical timer on our boiler..

Mikey_2811

Angled with LockshiedIs it recommended to change the lockshield also if … Angled with LockshiedIs it recommended to change the lockshield also if you have drained your system and are doing the TRV anyways? I think my TRV's are old as it makes heck of a noise which sounds like rushing water. The radiators are fully bled. Any comments would be great regarding this.



I wouldn't bother changing the lock shields tbh, older ones are likely to be much more reliable. When I do replace them I always use ones with drain offs, makes things much easier for future maintenance.

If you have a noisy system try turn the pump speed down to it's lowest.

Mikey_2811

Angled with LockshiedIs it recommended to change the lockshield also if … Angled with LockshiedIs it recommended to change the lockshield also if you have drained your system and are doing the TRV anyways? I think my TRV's are old as it makes heck of a noise which sounds like rushing water. The radiators are fully bled. Any comments would be great regarding this.



Sounds more like your system needs balancing, though you could slow the flow down using the lockshields on each radiator. TRVs usually make a noise as they are opening/closing, more so if the hot water is rushing across the radiator

Corranga

These look interesting, I've been looking at the eq3 max ones as they … These look interesting, I've been looking at the eq3 max ones as they allow wifi control, but I don't understand enough about heating systems to know if I should then have a boiler control / thermostat as well (maybe Hive...?)Currently, we only have a very basic mechanical timer on our boiler..



How do you power these? Surely a mechanical valve will get through batteries quite frequently?

I don't have any radiators, but it seems rude not to buy at this price.

£2.99 minus £10 off voucher, so screwfix give you £7.

Everyone's happy.

Thanks peeps, some very informative comments.

I have no TRV's on any of my radiators and I have 11 radiators in the house.

I shall be checking out some of the wireless heating control systems.

must not buy a couple of thermostatic radiator valve's just because they are cheap, must not buy a couple of thermostatic radiator valve's just because they are cheap.....

Can a layman/idiot like me fit/install a programmable TRV such as this? amazon.co.uk/gp/…WWS

TRV s are good for setting each rooms temperature separately irrespective of the general room thermostat that may be located in the lounge, fitting one on each radiator allows you to turn unused rooms radiators off etc or higher or lower, it saves energy and therefore money. Fit them in the summer when you can do without the boiler. Buy some proper ones that look nice. The trouble with wireless valves is, when they turn on when you are not at home or you are on holiday...

themorgatron

I really wouldn't bother with cheap rad valves, they are a false economy. … I really wouldn't bother with cheap rad valves, they are a false economy. They will soon stop working so you are left with the hassle of trying to source a replacement heat (nearly impossible on cheap models), or replace the whole valve.guyFor the sake of a few quid just put a Danfoss RAS-C2 on it, looks nice and will keep on working.


themorgatron

I really wouldn't bother with cheap rad valves, they are a false economy. … I really wouldn't bother with cheap rad valves, they are a false economy. They will soon stop working so you are left with the hassle of trying to source a replacement heat (nearly impossible on cheap models), or replace the whole valve.For the sake of a few quid just put a Danfoss RAS-C2 on it, looks nice and will keep on working.[/quo[quote=themorgatron]I really wouldn't bother with cheap rad valves, they are a false economy. They will soon stop working so you are left with the hassle of trying to source a replacement heat (nearly impossible on cheap models), or replace the whole valve.For the sake of a few quid just put a Danfoss RAS-C2 on it, looks nice and will keep on working.



Completely agree with this guy/person. It'll cost you more in the long run if you can't drain down the system & replace yourself. You may not notice the thermostatic head failing which may be useless from day one (no real way of proving it does what it should) as it's cheap, but when the valve seat jams shut, it'll need replacing.
'Buy cheap, you buy twice sometimes'
This may have been noted in the comments above but cba reading them, stopped at 'glorified taps'

I'm a Combustion Engineer BTW (with plumbing knowledge)
Hope this helps somebody.

Couldn't resist reading the comments & went through them.....
If you're looking at buying WiFi TRV's to save money, you're funny.
Save the money for slippers or insulation to save money - WiFi TRVs are purely for 'show'/'just coz' you can' technology..... save the money for a decent BLR or turn down your current TVRs or simply balance your system by shutting down the valve a bit so less flow is going through the rad in the room that isn't used much.

dannymull

Couldn't resist reading the comments & went through them..... If you're … Couldn't resist reading the comments & went through them..... If you're looking at buying WiFi TRV's to save money, you're funny. Save the money for slippers or insulation to save money - WiFi TRVs are purely for 'show'/'just coz' you can' technology..... save the money for a decent BLR or turn down your current TVRs or simply balance your system by shutting down the valve a bit so less flow is going through the rad in the room that isn't used much.



I'm sceptical about any money saving claims from manufacturers, only a couple of years ago it was all about heating the entire fabric of the house. On new builds with good insulation I still believe it's better to keep all radiators on rather than turn individual rooms off. The biggest problem I find is oversized boilers in houses, turning radiators off makes this even worse.

Cheers for this info OP, use these all the time at work as the heads get broken and its cheaper to buy these valves for the heads alone and 'recycle' the valve body but still a great valve & simple to temp limit lock, ordered 30.

Callmekersal

Can a layman/idiot like me fit/install a programmable TRV such as this? … Can a layman/idiot like me fit/install a programmable TRV such as this? http://www.amazon.co.uk/gp/product/B004LAT0J2/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A318N95IYHBWWS

I would stick with the standard ones to be honest, they do the job fine. with something like this one it just has more to go wrong

I bought angled thermostatic valves from Screwfix and they've been great, plumber told me they were all the same really!

SFconvert

How do you power these? Surely a mechanical valve will get through … How do you power these? Surely a mechanical valve will get through batteries quite frequently?



Good point, something else I'll have to look into. They are powered by 2x AA so they may well need frequent changing if they are adjusting often..

I have been looking at a system from heatgenius.co.uk as it is very reasonably priced. I live in a detached 1906 solid wall house and i'm quite taken with the thought of a "clever" control system to only switch on rads that I need. I only use gas for heating and my annual bill is about £1k so if they can save me a chunk of that then it may well be worth investing in.

Can I use the heads off these to fit a Drayton valve? all of ours have broken off, the plastic goes brittle and they break! So I doubt these can be any worse.

themorgatron

Just had a look at Tado, looks interesting and have requested more … Just had a look at Tado, looks interesting and have requested more information. I'm trialling something similar, although no-where near as polished. It's amazed me how incredibly slow the big manufacturers have been to implement smart controls, I had customers requesting them 4 years ago.I've also had a play with Hive, It's actually really good value when you consider it's from British Gas. I've been told if you're on their Homecare package and your existing programmer breaks, you can upgrade to Hive for £99.



Just to clarify, Tado is not zoned.

I have Tado being installed tomorrow morning, would have done it myself, but the control panel is built in to the boiler and I don't fancy playing with those electrics

dannymull

Couldn't resist reading the comments & went through them..... If you're … Couldn't resist reading the comments & went through them..... If you're looking at buying WiFi TRV's to save money, you're funny. Save the money for slippers or insulation to save money - WiFi TRVs are purely for 'show'/'just coz' you can' technology..... save the money for a decent BLR or turn down your current TVRs or simply balance your system by shutting down the valve a bit so less flow is going through the rad in the room that isn't used much.



I thoroughly agree with you as you should always look to insulate first. But what do you do when you have a new boiler, your house is fully insulated and you have rooms you use in the morning but not in the evening and vice versa. With a clever system you can heat the bedrooms and kitchen in the morning without having to heat the rest of the house, and heat the kitchen and living room for coming home from work and then heat the bedrooms in the evening. You can switch on and off remotely, so if you go away for the week but forget to switch the heating off then you can do it via your phone etc etc. So i don't think they are just for show. This type of system would be particularly pertinent for me or anyone with solid walls as insulating either ruins the look of your house outside or drastically reduces the size of you room inside, and my house does not retain much heat if any once the heating goes off.
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