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The Hydrolevel 650SV is a level control with automatic reset, low water cut-off, and a short probe. Designed for hot water boilers, it ensures safe operation by interrupting power immediately in low water conditions. The 650SV model locks out the burner circuit if water remains below the probe for 30 seconds.
This low water cut-off device ensures safe operation of hot water boilers by automatically resetting and testing the burner circuit without lowering the water level. It is particularly useful in preventing boiler damage due to low water levels.
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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