Features durable sealing materials designed to resist chemical degradation from common refrigerants and lubricants

making it a reliable standard for veteran contractors handling high-demand boiler feed lines

If installing in a high-moisture or outdoor environment

Common Questions Is the T-4002-203 compatible with older T-4000 pipeheads

Lochinvar & A.O. Smith 100111186 Valve 320788-702 Features durable sealing materials designedThe Lochinvar 100111186 Natural Gas Valve and Venturi Assembly is a critical OEM component designed for high efficiency condensing boilers and water heaters. This integrated gas air ratio control assembly ensures precise fuel delivery and optimal combustion across the burner's modulation range. Engineered for Lochinvar Knight and A. O. Smith commercial units, this assembly features a robust solenoid gas valve mated to a high precision venturi,