Laars Heating Systems R2072400 Flow Switch 326058-758 the MK-4421 provides a significant

the MK-4421 provides a significant 11 sq

Universal Compatibility: Specifically designed as a 943 motor replacement

using factory-spec components ensures proper flame rectification signals and long-term system stability

the 100110893 is a shared part number and is designed to meet the exact specifications for both Lochinvar and A

7 lb industrial-grade motor is built to exact manufacturer specifications

Laars Heating Systems R2072400 Flow Switch 326058-758 the MK-4421 provides a significantThe Laars Heating Systems R2072400 Flow Switch Kit is a precision engineered SIKA flow sensor designed for critical monitoring in high efficiency hydronic heating systems. As a genuine Laars OEM replacement part, this flow switch serves as a primary safety interlock, ensuring the burner circuit only energizes when sufficient water velocity is detected. This prevents dry firing and heat exchanger overheating, which are common failure points in