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immediately breaking the electrical circuit to the gas valve if temperatures exceed the safe operating threshold
Packing Spring
a handle and pin replacement is the most efficient fix for the client
is the critical seal required for McDonnell & Miller 47 Series
Marley Engineered Products 4520-2059-000 Limit Switch immediately breaking the electrical circuitThe 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
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