Spraybar

If this valve is open to the spraybar, the bitumen passes into the spraybar, the bitumen passes into the spraybar is prayed out through the nozzle into the pugmill.

The spraybar of the Enresco rig should be completely redesigned with special attention devoted to nozzle size and spacing.

When this was discovered, the spraybar system was abandoned and cyclones were introduced to produce the required outer shell of coarse pervious material.