Triple Wall Double Chamber Autoclave. The Lid, Ring, Inner Chamber, Middle Chamber (304 grade material) are made of Stainless Steel. The instrument is absolutely leak proof. Middle Chamber works as steam stock jacket. Equipped with Pressure Gauge, Safety Valve, Double Safety Valve, Steam Release Valve, Water Inlet, Water Outlet, Water Level Indicator, Rubber Gasket, Mild Steel Legs for Autoclave. The autoclave can hold the pressure in between 5 psi to 20 psi. Also equipped with Low Water Cut off Device, Digital Temperature Controller with Digital Timer & Alarm at end of cycle