the 100111057 operates on the air-intake side of the assembly and is compatible with both fuel types provided the appliance model matches

Providing 90 in-lb of torque

Does this model include a thermal expansion bypass

How do I know if my spider needs replacement

This component is designed for seamless integration into the gas burner assembly

Lochinvar & A.O. Smith 100277835 Kit THPU32HP7Y the 100111057 operates on theThe Lochinvar & A. O. Smith 100277835 Kit is a critical Venturi High Modulation assembly designed for precision air to fuel ratio control in high efficiency condensing boilers and water heaters. Engineered for natural gas systems, this 24 mm venturi ensures consistent performance across the full turndown range, or 5: 1 firing rate, by precisely mixing gas and air before delivery to the radial fire burner. This OEM replacement part is essential for