The Reznor 38678 #45 Nat Gas Orifice is a high-precision combustion component designed for accurate fuel delivery in specific gas-fired HVAC heating equipment

Thermal Durability: Engineered to hold its structural integrity under extreme heat within the combustion flue stream

Automatic Reset Functionality: Restores circuit continuity once temperatures drop back into the safe operating range

Reliable Switching: Features SPDT contacts for versatile normally open (NO) and normally closed (NC) operational logic

it includes a 1/8" NPT adapter for secure mounting and a NEMA 1 galvanized steel enclosure to protect internal connections from debris and mechanical damage

Honeywell 14004904-002 Gauge Els PW 17895 The Reznor 38678 #45 NatThe Honeywell 14004904 002 is a precision pneumatic receiver gauge designed for high accuracy monitoring within commercial HVAC control loops. Featuring a 2 1 2 inch diameter face, this instrument provides clear visibility for technicians performing routine system calibrations or troubleshooting pneumatic control systems. The gauge utilizes a 0 to 200 degree scale, making it a critical component for verifying temperature indexed pneumatic signals.