The Robertshaw 4590-004 is a professional-grade commercial griddle thermostat dial designed for high-accuracy temperature calibration on heavy-duty cooking equipment. This Robertshaw 4590 series black knob features a temperature range of 150°F to 400°F (66°C to 204°C), offering precise control for flat-top grills and griddles that utilize Robertshaw BJWA thermostats. Engineered for commercial kitchen equipment repair, this dial utilizes a 4-way universal D-stem mounting orientation (Off-Down), ensuring consistent shaft alignment and eliminating slippage during frequent adjustments. The high-heat resistant polymer construction maintains legible white heat-stamped markings despite prolonged exposure to grease and high ambient temperatures. This component is essential for maintaining griddle temperature accuracy and ensuring consistent heat distribution across the cooking surface, preventing cold spots or thermal overshoot in high-volume foodservice environments. Key Benefits for Contractors: Universal Compatibility: Optimized for Robertshaw BJWA series valves commonly found in Star, Lang, and Southbend field installations. Precise Graduation: Features a high-contrast 150-400 degree Fahrenheit scale for exact cooking surface temperature control. Durable Construction: Built with industrial-grade plastic to resist cracking and melting in demanding commercial griddle repair applications. Easy Installation: Designed with a standard D-shaped shaft insert for immediate field replacement without specialized tools. Common Questions: Does this dial include the mounting screw? This Robertshaw dial is a friction-fit D-stem thermostat knob and does not require a set screw for installation. Will this fit a 3/16 inch or 1/4 inch shaft? The 4590-004 model is configured for a standard 0.187 inch D-stem commonly used on BJWA hydraulic thermostats. Can this be used for deep fryer applications? No, this dial is specifically graduated for griddle temperature ranges up to 400°F; fryer applications typically require 450°F rated components. 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.
