Rated 240 psi @ 406 deg F. 10" dia x 5'7" long shell w/int screw. 10" inlet/outlet, each w/316SS rotary airlock valve, driven by 1 HP motor. Screw driven by 1 HP, 3/60/480 volt, 1750 rpm motor. Packing gland on shaft. Shell thickness .280", head 1.38". Mtd on stand.