4 poles electrical motor (1450 RPM) with thermal protection and water cooling. Three ceramic pistons, brass linear pump head with built-in by-pass valve. Integrated elastic joint, for best pump coupling. Low voltage and delayed Total Stop. Vertical burner with high thermal efficiency steel coil. Auxiliary motor for air-cooling burner and two ways fuel pump. Regulation Temperature gauge with high sensitive stainless steelsensor. Header tank and antiscale device. Pressure accumulator for hose and gun vibrations prevention. Hose-reel (6.608.0010).