Child compressor nebulizer with v.v.t. (ne-c801kd) ideal for children. Silent, compact and lightweight compressor nebulizer (weight only 270 g) traditionally, compressor nebulizers are known to be noisy, but thanks to their virtual valve technology (v.v.t.) ne-c801 kd is an exception to the norm includes two masks (1 for children and 1 for babies)