Rhinoflex is now distributing pinch valves for minerals processing applications in the mining industry. The pinch valves are used to control fluids, slurries, abrasives and corrosive chemicals. The valves feature a pinch mechanism that positions a sleeve and is said to offer maximum durability and ensures precise flow control. The pinch valve sleeve is crucial to the performance success of the valve. This sleeve enables a pinch valve to have a bi-directional, drop tight shut-off with which to control flow. Most pinch valve sleeves are made of flexible elastomer compounds, many of which resemble rubber in composition and feel. Because a sleeve’s composition is crucial to the success of the valve’s application, valve manufacturers offer different elastomer options from which the sleeve can be constructed.