How do I identify defective TRV brand?

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tplazer
tplazer Posts: 3
in Thermostats and Controls
Customer with overheating baseboard radiator, TRV is old & dead. No name at all on the control head unscrewed head off baseboard, no identification anywhere. I don't want to drain system to change main body, want to replace head.

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  • SWEI
    SWEI Posts: 7,342
    A photo or two would help.
  • tplazer
    tplazer Posts: 3
    Here are a couple pictures
  • hot_rod
    hot_rod Posts: 28,516
    looks like an old Danfoss. Maybe remove the white plastic and find a brand underneath. Most brands use the same thread now a days.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Bill_17
    Bill_17 Posts: 73
    The product in the photo is not from Danfoss, take a picture showing the end/face of the thermostatic operator's handle and another showing the side of the valve as there is often a logo on these items.

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