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Thermostatic valves

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Mark_7
Mark_7 Member Posts: 123
in THE MAIN WALL
What piping system works better for radiators with thermostatic valves? Monoflow tee's or parallel feed and return.

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  • DWood
    DWood Member Posts: 60
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    TRV's

    I would say the TRV's would work fine on both systems, however you do need to be aware that the TRV will increase the head (resistance) in the line and could be a problem on some monoflow branches.
    Good luck
    DWood
  • Mark J Strawcutter
    Mark J Strawcutter Member Posts: 625
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    TRVs on monoflow

    Parallel would be best. As Dennis said, with monoflow you need to watch that you don't create too much pressure drop across the radiator, or you won't get any flow.

    Look for a TRV with a high Cv value. Honeywell for example make a V100 series with 2.5 Cv and a V110 series with 4.6 Cv

    Mark
  • Unknown
    Unknown
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    Tvs on monoflow piping systems

    will not work. Any fitting or device that alters the pressure drop in venturii fittings will come back and bite you on the ------- (radiator).


    jake
  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928
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    Buderus provides VERY good information on using TRVs in a single-pipe system with their panels. Monoflow/Venturi and proprietary diverter valves are both discussed.

    You just can't shortcut on the calculations and have to stay within established parameters.
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