Here’s one pot broken out from its original masonry installation. You can see the line of the edge of the cement enclosure just below the line of rivets. At right, the drain. Note again the change in color where it exited the enclosure, showing the thickness of the insulation.
A close up of a preheater. On the near right side of it, the tubes and valves for a sight- glass. On the floor at left, the chapiteau (in bronze!) and swan’s neck. In the back right, the condenser tank.
You can see the top of the copper coil inside the condenser tank, left.The brass rings/handles on the sides are for hoisting.
The drain and valve on the 2nd pot.