Esbe loading valve VTC312 51001700 Item number 51001700 The VTC300 series is a compact and precise loading valve for Kessel for solid fuels up to 30kW. The charging valve ensures that the Kessel a high combustion temperature in order to ensure the lowest possible emission volume. Above all, the charging valve ensures that the return Kessel to Kessel guaranteed to be kept at a high level throughout the entire combustion cycle, thus enabling higher boiler efficiency, reduced tar formation and a longer boiler service life.