The Watts 1053017 is engineered for the 70A

specifically fitting model series like the D1CG and D2CG to provide exact gas flow regulation without the need for manual drilling or field modifications

Electrical specs (MFD and Voltage) are the priority

always clean the mating surfaces of the Series 21-27 bodies to ensure the 312200 gasket achieves a positive seal against the flange

Bradford White 415-43676-03 Thermal Switch The Watts 1053017 is engineeredThe Bradford White 415 43676 03 Thermal Switch is a critical safety component designed for atmospheric vent gas water heaters and Defender Safety System models. This L290F reset thermal switch operates as a secondary high limit safety, engineered to interrupt the electrical or thermocouple circuit if internal temperatures exceed 290 degrees Fahrenheit. As a veteran grade OEM replacement part, the 415 43676 03 ensures the integrity of the combustion