New to pneumatics

Been a few years, but I've hauled many loads of bulk flour to places like BisQuik.
If the company doesn't issue one, then invest in a sturdy rubber mallet. Don't be caught using a metal mallet.
The rubber mallet, tapping on the tank while it unloads, will ensure all the flour is pumped out and none sticking on the sides, inside the tanker trailer. You'll know no flour is stuck when you hear a hollow sound while tapping with the rubber mallet.
That's the best I can give, since it's been a few years since hauling bulk flour.

 

A good rubber mallet, preferably wrap a sock around the end of it if you want to keep the trailers looking nice.

A good set of hearing protection. I wore some earmuffs, can’t recall the brand. The old timers will poke fun at you but I feel like being able to hear later in life could be important.

Make sure you have spare seals (rubber rings) that go inside your fittings.

When you pull your hoses out of the tubes never let the metal end drop onto the ground.

 

I noticed the guy in the video was using a rock to lock the locking tabs on the hoses. Use the rubber mallet for that chore also.
Sometimes you can lock the tabs with your hands if you jiggle the hose a little to get proper allignment.

 

The tapping on the side of the trailer will cause any flour that's stuck on the inside to slide down to the bottom. This way, there's no flour left inside the trailer when unloading is complete. Sometimes the hose will jump when the trailer is empty because there's no more weight inside the hose.

 

If you carry a small piece if sandpaper and run it around the groove on the male connection, the cam locks usually lock with the palm of your hand.

 

Mask or respirator. That dust is a killer.