If a radiator has no TRV - what does it need instead?

[Plumb Line]

Hey

Sorry for the very basic question! Just putting my Screwfix shopping order together. We'll be putting a radiator in the bathroom and don't want that to have a TRV. So what does it have instead? A lockshield on both sides?

Any recommendations on what to get for a Stelrad Compact?

Many thanks

 

[SJB060685]

Lockshield's on flow and return yes.

 

[Deleted member 120897]

Or a manual radiator valve (essentially similar valve).

 

[Plumb Line]

Thanks chaps.

I've just had a rummage and found a couple of these:




To demonstrate my ignorance even further.... They're lockshield valves aren't they? If so, the piece on the right - is that part of it? I have two valves, but only one of those pieces.

Or a manual radiator valve (essentially similar valve).

If this ends up being the only radiator without a TRV - i.e. the always on rad - would a manual valve still be an option or best to have two lockshields?

Thanks for the help

 

[Deleted member 120897]

Either or, it doesn’t matter. Yes what you’ve posted a photo of is a lockshield, and the piece to the right is a radiator tail, the threaded part screws into radiator and then the nut and olive tighten down onto the smooth part.

 

[Plumb Line]

No idea what happened to the other radiator tail then but never mind... I presume the plumber can just re-use the tail from the radiator he is replacing? Or else might have one on the van?

Or is it better to use decent quality lockshields? These ones are Plumb Centre Tradefix / Wolseley... That being said, the central heating is back up (main heat is from wood burners).

Thanks for all the help with this.

 

[Ben-gee]

That valve will be fine.
Most lockshields, including that one, can operate as a manual valve too - the only difference is the white plastic cover. For a lockshield it doesn’t engage with the valve spindle, for a manual the centre of the inside of the cover engages with the valve spindle and allows it to be turned.

 

[Plumb Line]

Excellent, thanks or confirming, and to everyone for the answers and help. Cheers