Working pressure 5000 psi at 650 degrees f, pressure vessel stainless steel, self-sealing closure, 4.25 in. Od, 3 in. Id, 18 in. Interior l, v-belt driven by 1/4 hp 110/220 vac motor with right angle gear reducer, 26-49 rpm; 0-7500 psi pressure guage, 4.5 in. Dial, sight indicator, steel stand, 30.6875 in. h