Drayton RT212 leak

[c_smith]

Is there any way to repair a leak around the pin on these TRV's or is it a new valve I need? I was preparing to replace it but read somewhere that a pin leak can be repaired under pressure and without even having to drain the system - although, maybe I read it wrong.

Also, does anyone know how to balance the system using these TRV's? There are numbers (0-6 I think) when I take the head off. Is it better to balance using the lockshield valves or the TRV's?

Thanks in advance.

 

[kevplumb]

you balance using the lockshield

dunno about these
honeywell did
and i think danfoss did

 

[D_Hailsham]

Is there any way to repair a leak around the pin on these TRV's or is it a new valve I need? I was preparing to replace it but read somewhere that a pin leak can be repaired under pressure and without even having to drain the system - although, maybe I read it wrong.

The RT212 uses the same body as the TRV4; it's only the head which is different.

You can replace the top gland seal on the body without draining down. The gland kit (part no 07 35 009) included the spanner (Presetting key) needed.

Also, does anyone know how to balance the system using these TRV's? There are numbers (0-6 I think) when I take the head off. Is it better to balance using the lockshield valves or the TRV's?

Yes, you can balance using the TRV head - that's what the numbers are for. You use the Presetting Key to do this. Download the TRV Commissioning Guide.

If your local plumbers merchant can't/won't get a kit for you, give Drayton a phone on 0845 130 5522. They will probably sent you one for nothing.

 

[c_smith]

Thanks for that, you've been very helpful. I'll try replacing that seal rather than draining the system and replacing the whole valve. I hope I don't get soaked in the process! Cheers.

 

[D_Hailsham]

I'll try replacing that seal rather than draining the system and replacing the whole valve. I hope I don't get soaked in the process!

Download the Data sheet for instructions.