the Emerson EK052S is UL listed for 680 PSIG

making it an essential high limit switch for safeguarding HVAC equipment against overheating while ensuring automated system resets once safe operating temperatures are achieved

making it suitable for modern high-pressure R410A applications

Efficient Power Draw: Operates on a standard 24V AC signal with a low 200 mA initial current

Key Benefits High Viscosity Formula: Stays on the joint longer to identify slow

McDonnell & Miller 193D Controller Freon the Emerson EK052S is ULThe McDonnell & Miller 193D is a heavy duty combination low water cut off and pump controller designed for commercial and industrial steam boilers. Engineered for high demand environments, this float operated control manages pump activation while providing critical low water protection to prevent boiler dry firing. The 193D model features alternate tappings, specifically 1" NPT connections for equalizing pipes and integrated ports for gauge glass and