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Rugged Durability: The included enclosure protects internal components and features a standard 1/2-inch conduit knockout for professional wire management
bypassing the need for wire removal and system downtime
providing reliable performance in demanding cycling conditions
specifically engineered to withstand the rigorous demands of HVACR environments
remote control stations
Hydrolevel 550SV Low Water Cut-Off 30067439-890 Rugged Durability: The included enclosureThe Hydrolevel 550SV Low Water Cut Off is a specialized safety control engineered for hot water boiler applications where a manual reset is required. This 120VAC unit (Part No. 45 551) utilizes a Safgard EL1214 SV sensing probe to monitor water levels via hydrostatic pressure and conductivity, providing 15,000 ohm sensitivity. Designed for direct mount installation via a 3 4" NPT connection, the 550SV prevents dry fire conditions by interrupting the