HVAC safety circuits require the exact pressure rating specified by the manufacturer

Fuel Adaptability: Comes with both Natural Gas (installed) and LP-Gas orifices for immediate field adjustment

and FA series traps in sizes 1/2"

How do I verify compatibility for my specific furnace model

Lochinvar & A.O. Smith 100093874 Valve 323613-751 HVAC safety circuits require theThe Lochinvar & A. O. Smith 100093874 is a specialized LP Gas Control Valve designed for high performance water heating systems. This direct replacement for 316158 001 ensures seamless integration with specific liquid propane fired commercial and residential units. Engineered for precise fuel regulation, this valve manages manifold pressure to maintain optimal combustion efficiency and thermal output. Known in the field as a critical OEM replacement