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Mouat Valve Increments

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Harry_6
Harry_6 Member Posts: 141
Does anyone know if the holes around the periphery of a Mouat valve, and which index the stop, represent anything flow-wise? I seem to recall one manufacturer's valve having a stop for every 10 square feet of radiation, so you could set the valve stop without grief as long as you know the radiator size. Did Mouat do this?