Elevate the performance and precision of your Bertazzoni 401890 Range with the Gas Valve Or Thermostat Knob B. This essential knob is expertly designed to provide seamless control over the gas flow and thermostat settings, ensuring that you can achieve your desired cooking results with ease. Constructed with a focus on durability and functionality, this knob is built to high-quality standards, guaranteeing reliable performance over time. Whether you're adjusting the cooking temperature or selecting the gas level, this knob delivers smooth operation and precise adjustments, making your cooking experience effortless and efficient. Upgrade the heart of your kitchen with this genuine Bertazzoni replacement part, designed to enhance the functionality and longevity of your range. Trust in the performance of this knob to bring convenience and accuracy to your everyday cooking tasks, allowing you to enjoy superior cooking experiences with every use.