this SPDT switch (Single Pole Double Throw) provides a reliable proof-of-open signal when the valve reaches its full-open stroke

this component is strictly a 120 Vac hot surface ignitor

not just when the starter is energized

Williams manufactured many units for Sears and Montgomery Ward

Does this include the motor or gaskets

Carrier 700114-11 Aquastat 30067439-890 this SPDT switch (Single PoleThe Carrier 700114 11 CR Aquastat is an essential OEM replacement component designed for high precision water temperature regulation in hydronic heating systems. As a primary aquastat control, this unit monitors boiler temperatures to cycle the burner or circulator pumps, ensuring the system operates within safe and efficient thermal parameters. This specific model features a manual reset or automatic cycling capability depending on the application,