Teksav knapsack sprayers are implaments carried at the back. In all models, by moving lever upward amd downward pleased at the right side of the tank, Consequently spraying can be applied. D1,D2,D3 Models are also carried at the back, but the lever is at the top of implaments. Ýnside the tank there is avalve fort o avoid exceeding maximum pressure. Tank is also made from Cr-ni material and there is a pressure indicator gauge on it