The Series 4670 High Pressure/High Temperature Vessels are available in either a 1.0 or 1.5 Gallon capacity. These vessels can obtain temperatures up to 600 °C and a maximum pressure of 3000 psi (200 bar). The maximum pressure at maximum temperature is 2200 psi (150 bar) at 600 °C. A Split Ring closure with 16 Compression Bolts secures the head which allows a maximum of 12 openings. The Series 4670 Vessels can be configured with either a fixed head on a floor stand or as a moveable head vessel on a moveable cart. The fixed head versions allow the head (and the connections made to it) to remain in place while the cylinder and heater are lowered with the aid of the included pneumatic lift system.