Pneumatic pros and cons

The trailers are not flat, almost no flat surfaces on them at all. They are rounded everywhere. You might use some bungies to tie hoses in place, but no strapping or tarping of cargo.

The cargo rides inside a tank instead of outside. It gets dropped into the top and then blown out through a hose into another tank.

You run a blower to make pressure and control that with valves and it is possible to make a big mess if you get something wrong and don't recover. One thing that can and will go wrong is a clogged hose, which ramps tank pressure up quickly. It i possible to blow a hole in the side of a tank, typically along a seam but not always. Look at older tanks to see where they were repaired.

If the hatch on top is not closed and sealed properly, unloading will be slow and possibly messy. If you try to open a hatch when a tank is pressurised you will be fortunate if you only need reconstructive surgery and not burial insurance.

Many places you will be weighed out at 79.8 plus or minus, you'll have a scale ticket out the gate. You will almost always empty or full, partial loads are rare.

It typically pays less than flatbed. Involves chemical exposure.

 

Fill with air. Open spout. Wait 40 minutes.

Close everything up, dump air when empty. Done.

 

Yup. A proper wash requires disassembling the discharge plumbing to clean out the Victaulic joint gaskets. and cleaning the loading pipes +/or Vacuum filter.

Some times a garden hose will do and sometimes you need a flue brush chucked into a drill wrapped with a solvent soaked rag...then there are the flo cones.......good source of contamination...

 

*Don't forget play games on phone...