Honeywell Q335C 1031B Thermocouple Q335C1031

Honeywell Q335C 1031B thermocouple is an original safety valve thermocouple (thermoelectric flame sensor) for gas control systems. This device, also known under part number 534.799.002, is a critical element of gas equipment safety systems. When heated by the pilot flame, the thermocouple generates millivolt voltage that holds the electromagnetic gas valve open. If the pilot flame goes out, the thermocouple cools, voltage supply stops, and the valve automatically shuts off the gas, preventing leakage. Purpose and compatibility: The Honeywell Q335C 1031B thermocouple is specifically designed for use in gas control systems where reliable confirmation of pilot flame presence is required before main gas is supplied. The device is compatible with Honeywell Q334 and Q385 "2000" series pilot burners. Compatible pilot burner: Q334A: Pilot burner rated for maximum tip operating temperature up to 815°C, designed for use with Q309A and Q335C thermocouples. Q385A: Pilot burner rated for maximum tip operating temperature up to 730°C, designed for use with Q309A thermocouple. Typical applications: Gas boilers and water heaters, gas fireplaces and stoves, gas heaters, industrial burner devices. Technical specifications: Parameter Value Manufacturer Honeywell Model / Part number Q335C 1031B Device type Thermocouple Compatibility Pilot burners Q334A (2000 series) Purpose Flame detection, emergency gas shutoff Category for site Thermocouples and thermogenerators Operating conditions: When installing Q335C 1031B thermocouple on Q334A pilot burner, maximum operating temperatures must be considered.