High-efficiency and long-life secondary heat exchanger for wall-hung gas boilers, FS12, FS14, and FS-Y12 models are designed for optimal thermal performance and durability. Made from high-quality 304, 316L stainless steel plates with copper-based or nickel-based brazing technology, these heat exchangers ensure reliable operation and corrosion resistance. Widely used in residential and commercial gas boiler systems, they support efficient heat transfer with low maintenance and enhanced service life, meeting international standards for energy-saving and sustainable heating solutions.More
