Prevent Backflow When Blasting Vertical Surfaces

When wet blasting vertical surfaces, abrasive and water can travel back through the blast hose and into the blast pot when blasting stops. This can create problems with your blast machine, particularly when working on elevated surfaces such as storage tanks.

In this Primed Insight, learn a practical blast hose positioning technique to help manage backflow during vertical wet blasting. The video explains why keeping a horizontal section of blast hose on the ground is important and how to calculate the recommended length based on blasting height. Using a 50-foot tank as an example, discover how a simple adjustment to your hose layout can help reduce equipment problems.

In This Video:

0:00 → Backflow problems when blasting vertical surfaces
0:24 → Recommended blast hose positioning
0:28 → Calculating horizontal hose length for vertical blasting
0:37 → Example: Blasting a 50-foot-high (15 metres) tank
0:48 → Allowing abrasive and water to settle when blasting stops
0:54 → Final recommendations and closing