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Plate limiter

hvac21
hvac21 Member Posts: 1
I have fhw boiler that's piped as a mono flow to radiators on the supply coming out of boiler there is a plate inside with two holes drilled through about 1/8" each can anyone tell me what this is for

Comments

  • HVACNUT
    HVACNUT Member Posts: 4,197
    edited August 2017
    Can you post pics? Close up and away. Old boiler?
    Maybe at one time there was a side shot water heater.