Weil McLain 383-500-395 Kit 30067439-890 For service efficiency

For service efficiency

Using this valve with R410A will lead to improper metering and potential system damage

This specific 21 series set typically includes the top and bottom valves

ensuring the boiler control module can accurately adjust firing rates based on actual supply or return temperatures

replacing a carbon-tracked or brittle cable with this genuine Lochinvar replacement part restores the precise millivolt signal required for flue gas combustion

Weil McLain 383-500-395 Kit 30067439-890 For service efficiencyThe Weil McLain 383 500 395 Cover Plate Replacement Kit is a critical OEM maintenance assembly designed specifically for Ultra Gas Boiler models, including sizes 155, 230, and 310. As technicians know, a compromised combustion chamber boundary lead to drafting issues and inefficient heat exchange. This comprehensive condensing boiler repair kit includes a heavy duty cover plate, a high temperature cover plate gasket, a burner gasket, and all necessary