YY(Q)W series adopting high quality corrugated coil to carry the heat conduction oil, increase the heat transfer area, reasonable gap between coil tubes to fit the hot expansion and cold contraction . Average coil tubes’ working life more than 17years.
Gas/Diesel Thermal Oil Boiler YYQW series thermal oil boiler, adopt horizontal chamber combustion three-coil structure, its body is composed of outer oil, middle oil, inner oil and rear oil.
