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Most service kits include the necessary replacement O-ring (Sporlan #791001) for a leak-proof seal during reassembly
Common Questions Is the Watts 0881427 compatible with other union brands
this diaphragm acts as the primary pressurized barrier
Paddles are trimmable to facilitate custom flow rate adjustments and precise setpoint calibration
Meets exact OEM technical specifications for fitment and thermal response
Carrier HH12ZB240 Limit Switch Most service kits include theThe Carrier HH12ZB240 is a high limit OEM replacement part engineered for precise thermal regulation and safety in Carrier, Bryant, and Payne gas furnaces. As a normally closed (NC) switch, it is designed to protect the heat exchanger from damage caused by restricted airflow or blower failure. This auto limit switch functions on a specific thermal cycle, opening the circuit when internal temperatures reach 240F to interrupt the gas valve and closing