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The 157S-RL is a low water cut-off snap switch from Xylem-McDonnell & Miller designed to ensure accurate water level control in various applications.
This device helps prevent damage from low water levels and is essential for maintaining safe operations in systems like boilers and pumps.
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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