When the switch closes upon sensing airflow

compatible with all gas types

this non-spring return linear actuator provides 90 lbf of force

ensuring a leak-free fit

This is the thermostat assembly itself

Reznor 196855 Burner Orifice 322055-301 When the switch closes uponThe Reznor 196855 Burner Orifice is a high precision OEM replacement part engineered for specific commercial and industrial gas fired unit heaters. This #19 drill size orifice is factory calibrated for natural gas (NG) applications, typically found in PREEVA series units like the Reznor SDH 75 or Reznor RDH 75. In a combustion system, the orifice is a critical component that meters the fuel flow to the burner assembly. A worn or mismatched burner gas