Drayton TRV 4 is broken AGAIN

[rribumbee]

I've replaced a new Drayton trv 4 myself on the first week of November with the same issue. Now it's broken AGAIN! I've attached the image here of the broken valve. Can anyone determine what's the cause of this broken valve? Is it the quality or what are the causes??

 

[cross thread]

Replace loads that just get knocked and snap off

 

[ericmark]

I found eQ-3 electronic at £15 each in 2019 may be more expensive now, these exercise the valve mid day every Saturday to stop them sticking, and come up with a fault report if over or under travel, so you know if pin has stuck. And of course programmable and actually work in degrees C no silly *123456 so would not fit mechanical heads any more.

 

[oldbutnotdead]

I'm assuming you only replaced the head cos that valve body looks fairly ancient. Is the pin jammed?

 

[rribumbee]

I'm assuming you only replaced the head cos that valve body looks fairly ancient. Is the pin jammed?

Do I have to replace the valve body as well? I'm new to this. The pin is jammed at that position

 

[polesapart]

^ Yes.

Replacing head onto an actuator pin that is jammed open will do nothing but stress the new head.

 

[oldbutnotdead]

Do I have to replace the valve body as well? I'm new to this. The pin is jammed at that position

You can try freeing the pin off- have a search in this forum, it's not a rare problem. WD40 and a spoon are popular. And yes that'll be why your new head has failed.