Safety Integrity: Prevents "no-heat" calls by maintaining reliable flame rectification signals to the furnace ignition module

The tapping is used to connect pilot burner lines or to install a pressure gauge for monitoring gas line pressure

To ensure accuracy for pressure switch calibration

As a veteran-grade dual pressure control

On the MARS 19166

Robertshaw 4290-006 Gas Thermostat Freon Safety Integrity: Prevents "no-heat" callsThe Robertshaw 4290 006 is a professional grade snap acting hydraulic thermostat engineered for precise temperature regulation in demanding commercial kitchen environments. Designed for high duty applications such as commercial fryers, griddles, and convection ovens, this GS series gas control operates by interrupting gas flow to the burner once the setpoint is reached. Technical specifications include a 200F to 410F temperature range, making it ideal