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Manufactured by Zhengzhou Wister Gas Equipment Co., Ltd., the WST‑45 is a FGR flue‑gas recirculation low‑NOₓ gas burner for 0.5‑ton boilers. It adopts Flue‑Gas Recirculation (FGR) technology to reduce NOₓ formation, delivering stable operation and excellent energy‑saving performance, compatible with multiple gas fuels.
Applicable Equipment: 0.5‑ton steam boilers, hot‑water boilers, thermal‑oil heaters, hot‑air furnaces
Fuel Compatibility: Natural gas, liquefied petroleum gas (LPG), town gas
Thermal Power: 0.35MW (approx. 300,000‑450,000 kcal/h), matched for standard heat load of 0.5‑ton boilers
Control Mode: Modulating control / two‑stage fire control, supporting remote PLC communication
Low‑NOₓ Performance: NOₓ emission ≤60mg/m³, meets domestic environmental requirements for low‑nitrogen retrofit
Key Structure (Integrated FGR Monoblock Design):
Fully‑integrated monoblock unit equipped with FGR flue‑gas recirculation pipeline and adjusting actuator
Special FGR mixing construction for sufficient premixing of flue gas, gas and combustion air to maintain stable combustion condition
Integrated gas valve train, pressure switches, UV flame detection, flame‑failure protection and fault alarm modules
Key Advantages:
Proven FGR flue‑gas recirculation technology for consistent low‑NOₓ performance with reasonable retrofit cost
Monoblock all‑in‑one layout enables easy installation and commissioning, suitable for most existing boiler retrofit projects
Complete combustion with thermal efficiency ≥92% and low operating noise
Fully‑automatic sequence control with fault self‑check and complete safety interlocks for safe and dependable operation
Applications: Low‑NOₓ retrofit for industrial boilers, commercial heating, food drying and small‑scale industrial heating facilities
Industrial boiler supporting
municipal central heating
food processing
printing and dyeing drying
chemical and pharmaceutical production
new energy heating and other large and medium-sized thermal energy fields
