Fireye 4-290-1 Tube 320735-701 Diagnostic Clarity: Maintains the integrity

Diagnostic Clarity: Maintains the integrity of sensor data sent to the 2-line LCD display for accurate water heater troubleshooting

it is ideal for both chilled and hot water systems

Key Benefits: Precise Thermal Calibration: Features a factory-set 80°F opening and 31°F closing point to ensure accurate system regulation and protection

Equipped with 1/4" Barbed Fittings

P1 Bushing Integration: Utilizes the widely available P1 series bushing system for easy mounting and precision alignment

Fireye 4-290-1 Tube 320735-701 Diagnostic Clarity: Maintains the integrityThe Fireye 4 290 1 replacement UV tube is a critical component for maintaining reliable flame supervision in industrial burner systems. Designed for use with Fireye UV1A, UV2, and UV8A flame scanners, this ultraviolet sensing tube detects the UV radiation emitted by fossil fuel flames while ignoring infrared signals from hot refractory. As a non self checking UV sensor, it is engineered for intermittent operation where the burner cycles at least once