Robertshaw 4350-028 Gas Thermostat

As a seasoned technician, you know that keeping high-output commercial griddles in service requires reliable, modulating thermal control. The Robertshaw 4350-028 Gas Thermostat is a professional-grade BJWA gas thermostat designed specifically for heavy-duty griddles and cooking equipment. This combination gas cock and bypass-style control allows you to manage both the pilot and main gas flow with a single dial turn, streamlining operation in high-volume kitchens. It features a precise 150°F to 400°F temperature range, ensuring accurate heat management for a variety of proteins and delicate browning tasks. With a 36-inch capillary and a 3/16" x 8-5/8" sensing bulb, this unit offers flexible mounting via its 1/4" pipe connection and wide flange. The modulating seat action maintains consistent plate temperatures by gradually adjusting gas flow rather than simply cycling on and off. Built for durability, the 4350-028 commercial griddle thermostat is a drop-in replacement for original equipment, rated for up to 70,000 BTU/HR. It is fully adaptable with a four-way mounting orientation to fit tight manifold configurations.

• Universal Compatibility: Designed as a direct replacement for BJWA Series controls found in brands like Vulcan, Garland, and Alto-Shaam.
• High BTU Capacity: Rated for 70,000 BTU/HR, making it suitable for large-scale natural gas and LP commercial griddles.
• Precise Modulation: Provides a steady flame adjustment to prevent large temperature swings on the cooking surface.
• Field Adjustable: Features front-facing adjustments for the pilot and bypass to ensure a stable 1/8-inch minimum flame.
• Technical Versatility: The 36" capillary provides ample length for various bulb placement requirements without crimping.

Is the Robertshaw 4350-028 compatible with propane (LP)?
Yes, while commonly used for natural gas, this valve is rated for both NG and LP applications provided the appropriate burner orifices are used. Always verify specific manifold pressure requirements.

How do I calibrate this thermostat if I rotate the housing?
When the rear housing is rotated to fit a manifold, the internal calibration must be adjusted. Using a flathead screwdriver in the center of the gas cock plug, turn the calibration screw 1/4 turn in the same direction the housing was rotated.

What is the purpose of the bypass adjustment on this unit?
The bypass adjustment ensures that the burner remains lit at a minimum setting when the thermostat reaches its set point, preventing the pilot from blowing out and ensuring immediate recovery when heat is called for.

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.