Full Port Design: The 3/4" NPT internal diameter ensures maximum flow capacity and high Cv ratings for efficient fluid transfer

7 Cv rating and a full 3/4" orifice to minimize pressure drop across the valve

rectangular design allows for precise placement in restricted unit heater housings

Common Questions What are the symptoms of a failing EF33CW201 valve

Lochinvar & A.O. Smith 100111336 Burner Assembly 321894-708 Full Port Design: The 3/4"The Lochinvar & A. O. Smith 100111336 Burner Assembly is a critical OEM replacement part engineered for high recovery natural gas water heaters. This NAT 16 inch burner assembly features a precision drilled #37 orifice, ensuring calibrated gas flow and optimal BTU output for consistent combustion. Designed specifically for Series 200 and 201 units, it integrates seamlessly with Hot Surface Ignition (HSI) control valves, providing a reliable spark for