it provides superior airflow management

It features a reliable 3-20 PSIG operating range with a factory-calibrated 12 PSIG cut-in (R to Y) and a fixed 2 PSI switch differential

What gases is this spring compatible with

though it comes factory-set to trigger at the mid-stroke position

this poppet style regulator is designed with a rubber seat to ensure positive shut-off and precise regulation even at low flow rates

Carrier HH680354 Limit Switch 322838-752 it provides superior airflow managementThe Carrier HH680354 Limit Switch is a critical safety component designed for high temperature monitoring in Carrier, Bryant, and Payne furnaces. This disc style, normally closed circuit is engineered to open when the internal plenum temperature reaches 250F, effectively breaking the electrical circuit to the gas valve to prevent heat exchanger damage or unsafe operating conditions. Once the temperature cools by the 20F differentialdropping to