pressure tube side 15 barg @ 300 degrees C (312 liter) shell 8 barg @ 300 degrees C (212 liter) Volume: Tube side: 312 liters, Shell side: 212 liters (1) 321 stainless steel (1.4541) top bonnet head, (1) 321 stainless steel (1.4541) bottom dished head