Inner and outer wall both made of stainless steel. Lid is made of thick machined stainless steel plate. Support ring and legs are also made of stainless steel. Gasket is made from imported silicon rubber. Fitted with microprocessor based fully automatic fuzzy logic control system with timer buzzer. Fitted with low-water level cut-off as a standard feature. Fitted with automatic purging and exhaust valve. Radial locking lid ensures user safety & safe locking. Available Capacities 22ltrs., 50ltrs., 78ltrs., 98ltrs., 187ltrs.