Technicians should look for a "bulged" top

This specific model is designed for water/hydronic heating systems

It provides a reliable access point for technicians to monitor high-side discharge pressures

though technicians should always verify the specific thread and length requirements for their Maxon burner model

especially for maintaining specific pressure tolerances

Williams P295200A Gas Valve Els PW 17895 Technicians should look for aThe Williams P295200A Gas Valve is a critical natural gas control valve for technicians servicing Williams Direct Vent Wall Furnaces. Engineered for precision gas regulation, this 1 2" NPT gas valve is factory set to a 4" WC (Water Column) manifold pressure, ensuring optimal combustion efficiency and thermal output. It serves as the primary gateway within the control assembly, managing fuel flow for 14,000, 20,000, and 30,000 BTU models, specifically