LAD's air-operated pinch valve incorporates materials such as cast iron, cast aluminum, carbon steel, or stainless steel in its valve body composition. Its operating principle relies on the gap between the valve body and the sleeve to deform the sleeve, thereby interrupting the flow and controlling the medium, which can be either air or water, at a pressure range of 3-6 bar. The manufacturing process of the lining sleeve is purely manual, using mainly two-phase LNT rubber reinforced with canvas and finally synthesized with natural rubber.