Towel radiator noise

[Bonner]

I have towel radiators on a by pass circuit so they come on with DHW demand. This works well apart from noise during heat pump overrun. All the flow seems to be directed through the towel rads when the DHW valve has closed and, particularly in the summer, the rad valves are nearly closed. I am thinking about installing a flow control valve in the plant room rather than rely on the rad valves to throttle the flow. I am conscious that there will still be some noise and this will transit through the piping so what would be the best type of valve to install (22mm)? Thanks

[Nickfromwales]

2 minutes ago, Bonner said:

I have towel radiators on a by pass circuit so they come on with DHW demand. This works well apart from noise during heat pump overrun. All the flow seems to be directed through the towel rads when the DHW valve has closed and, particularly in the summer, the rad valves are nearly closed. I am thinking about installing a flow control valve in the plant room rather than rely on the rad valves to throttle the flow. I am conscious that there will still be some noise and this will transit through the piping so what would be the best type of valve to install (22mm)? Thanks

Just install a 22mm gate valve across the flow and return for these rads and open it 1 revolution, test, and then go 1/4 revolution open and test again until happy. 

[Bonner]

1 hour ago, Nickfromwales said:

Just install a 22mm gate valve across the flow and return for these rads and open it 1 revolution, test, and then go 1/4 revolution open and test again until happy. 

Thanks, I was thinking about a gate valve but wondered if I should consider something more sophisticated 🤔

[Nickfromwales]

13 minutes ago, Bonner said:

Thanks, I was thinking about a gate valve but wondered if I should consider something more sophisticated 🤔

That decision is yours