Cement Autoclave provides accelerated curing of mortar bar specimens in controlled steam pressure and temperature to determine expansion of hydraulic cements by ASTM C151 method. The ASME-certified welded steel cylinder features a bolted cover and is mounted on a rugged frame encased in a heat-insulated metal housing. Operating pressures are automatically maintained through the regulator from 60—350psi (0.4—2.4MPa) and displayed on the 600psi x 5psi dial gauge with 4.5in (115mm) diameter. A certified 350psi safety pop valve is included. An ASTM 2F thermometer, air vent valve, wrench, and package of five gaskets are also included. ASTM C151 , AASHTO T 107M