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For residential, commercial, and industrial applications. Heavy duty. Includes No. 2 switch. Optional manual reset available. Maximum boiler pressure 50 psi (3. 5 kg/cm2). Use with TC-4 on hot water systems. <b>Made in the USA</b>.<br><br>

McDonnell & Miller Series 63 Low Water Cut-off 63-M, Mechanical with Manual Reset

series-63-low-water-cut-off-63-m-mechanical-with-manual-reset

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