wafer pneumatic butterfly valve

▶▷A sealing ring, ensuringtightness in the seat, forms a sandwich of stainlesssteel sheets layered witha soft filler of graphite. This composition is able to withstand high temperatures and ensures excellent resilience of the sealing element even during significant fluctuations of medium temperature and pressure. ▶▷The packing system consists of a series of soft graphite sealing rings preventing leakage around the shaft. Graphite is a material which perfectly seals and resists high temperatures. Optimization of the ratio between tightness around the shaft and the actuating torque can be easily achieved by tightening or loosening the nuts holding the packing flange. ▶▷Spirally wound stainless steel band with a soft graphite filler guarantees a perfect seal even with large temperature and pressure fluctuations inside the pipe.