KHS bottle washing machines incorporate helpful features for processing adhesive pressure labels including being equipped with slide valves which means plastic labels do not jam between butterfly valves or clog the piping. Label conveyor belts in the machines are always provided with carriers in order to remove label material more effectively and all pumps are equipped with upstream filter elements to guarantee long pump life, while preventing plastic labels from pulping in the pump impeller. The company provides a range of conversion kits for setting up bottle washing machines to meet new requirements and if a company chooses to use traditional KHS bottle washing equipment for washing refillable bottles decorated with adhesive pressure labels, bottles dressed with these labels will be processed for preliminary individual laboratory tests.