Precision Gas Metering: Delivers accurate natural gas flow to the burner assembly for standardized heat exchange

Common Technician Questions: Where is the best location to install the HFO-0015 for accurate TESP

Can I use a 440V capacitor if the S1-024-20045-700 is 370V

018" orifice for propane will result in over-firing and a dangerous pilot flame

Marley Engineered Products 4520-2059-000 Limit Switch Precision Gas Metering: Delivers accurateThe Marley Engineered Products 4520 2059 000 is an OEM 160 230F AUTO Limit Switch designed for high accuracy temperature monitoring in HVAC heating systems. This heavy duty bimetal disc control serves as a critical safety component, engineered to automatically interrupt the circuit when internal temperatures exceed the 230F threshold and reset once conditions return to the 160F range. Frequently utilized in QMark and Berko heaters, this 4520 2059 000