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The McDonnell & Miller 143100 is a manual reset mechanical low water cut off designed for hot water and steam boilers. It features a one-inch NPT connection and maximum pressure rating of fifty PSI. This unit is suitable for residential, commercial, and industrial applications.
Reliable low water cut off for maintaining safe boiler operations.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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