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The Maxitrol MR212J-3232 4" NPT Negative Pressure Modulating Valves provide precise, instantaneous temperature control without requiring a motor or mechanically driven butterfly valve. These valves are designed for negative pressure applications, using a counter spring to keep the valve closed. The MR212 valves are factory set for applications up to -1.5” w.c. and are field adjustable for up to -3.5” w.c.
The MR212J-3232 modulating valves maintain consistent temperatures for stabilized area heating and elevated heating applications.
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