Replacing Pegler TRV

Joined
5 Mar 2006
Messages
29
Reaction score
0
Location
Oxfordshire
Country
United Kingdom
The valve has gone faulty in my Pegler Terrier TRV, it doesn't turn the radiator off even on Frost. I've swapped the Termal head, still the same.

Can I replace the TRV without a system drain by freezing it?

I'm a bit concerned about the radiator outlet from the TRV, with it being a short length will it freeze with just a rag around it?

I'll turn off the header tank valve into the system before starting.

Any suggestions welcome.

Thanks

Rod
 
Sponsored Links
The valve has gone faulty in my Pegler Terrier TRV, it doesn't turn the radiator off even on Frost. I've swapped the Thermal head, still the same.
The pin is probably stuck.

Remove the head and check if you can press down the pin sticking up from the body. It should go down easily and then spring up.

If the pin won't budge some silicon lubricant may help.
 
I've already tried that, it moves up and down ok.
Does the rad go cold if you hold the pin down? If so, the valve body is OK; the problem must be in the head.

You can hold the pin down as follows:

Set the head to Max and remove it
Put a small coin, or similar, in the head
Replace head
Turn head slowly towards lowest setting until it won't turn any further.
 
Sponsored Links
I've exchanged the head from another radiator, still the same. I've also replaced the head with a plastic lock down cap, still the same.

Rod
 
I've exchanged the head from another radiator, still the same. I've also replaced the head with a plastic lock down cap, still the same.
Then you have proved that the valve body is faulty.

Fit decent valve next time, e.g a Drayton or Honeywell.

Now for you original question about draining down.

As you have an open vented system with header tank you can use the "bung" method. Get a Drayton Drain Easy kit from your local DIY shed or plumbers merchant and follow the instructions. You will then be able to change the TRV without draining down or freezing the pipes.
 
And what if he has a primatic cylinder???
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top