vertical packed column ref # F11563-1 working pressure 0.5 barg + FV @ 180 degrees C 6.35mm shell thickness VKR distributor range 0.07-0.25 m3/hr packing height 2100mm 10-layers of Sulzer M2YW 316L stainless steel packing top head with spray nozzle 2-316L stainless steel bonnet heads