Robertshaw 4200-018 Gas Thermostat

The Robertshaw 4200-018 is a heavy-duty, high-capacity commercial gas thermostat designed for demanding kitchen environments. This FDO model operates within a temperature range of 150°F to 550°F, making it a critical component for Vulcan-Hart deck ovens, convection ovens, and baking ranges. It features a 72-inch capillary and a 3/16" x 14-3/4" nickel-plated sensing bulb, providing precise thermal feedback for consistent equipment performance. Engineers have built this unit with a 3/8" pipe inlet and side outlet to ensure standard fitment in professional installations. The FDO-3-04-72 configuration supports 4-way mounting, offering flexibility during field replacements. As a specialized gas cooking control, it utilizes a modulating snap-acting bypass to manage the main gas supply while maintaining low-temperature stability. This replacement oven thermostat is an exact cross for Hobart 107522-1 and Johnstone Supply F16-765, ensuring seamless integration with existing gas appliance systems.

• Broad Operating Range: Supports precise thermal regulation from 150°F and 550°F for versatile cooking applications.
• Rugged Reliability: Constructed with heat-resistant materials and a robust Body Type #1 for long-term durability in high-heat commercial kitchens.
• Technician-Friendly Design: Features accessible pilot and bypass keys that are slotted for easy adjustment directly from the front of the control.
• Multi-Brand Compatibility: Direct replacement for several major manufacturers, including Vulcan, Hobart, and Town Food Service.
• Precise Modulation: Uses advanced thermostatic action to modulate gas flow, preventing significant temperature swings in deck or convection ovens.

Is the control knob included with this specific model?
Yes, this 150-550°F black knob is typically included to match the factory-calibrated dial range of the Robertshaw 4200 series.

What fuel types are compatible with the 4200-018?
This mechanical thermostat is designed for use with both Natural Gas (NG) and Liquid Propane (LP) systems, provided a qualified technician performs the necessary pressure and bypass adjustments.

How do I resolve a main burner that turns off before reaching temperature?
Verify the placement of the 3/16" sensing bulb. If the bulb is too close to the burner or touching metal surfaces, it may cause premature shutoff. Ensure the 72-inch capillary is not kinked or obstructed.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.