A submersible utility pump was part of my water-equipment purchases.
The featured Amazon option is Superior Pump 91250 Utility Pump.
Where it fits my build
My Day 87 plan put the body openings ahead of the aluminum framing, flooring and wall panels. I specifically included the shower drain and the openings for three water tanks in that order of work.
I removed cargo tie-down hardware to leave mounting points for the extrusion framing, and removed door trim for the later insulation and paneling. SketchUp helped me plan how those separate jobs would fit together.
The cargo floor during my preparation session before sound deadening.Removing stuck-on residue during the floor cleanup.
My build notes
The useful part of this diary entry is the sequence. I wanted to finish the drilling while the interior metal was bare, so later work would not mean opening finished surfaces again.
The photographs show my preceding floor-preparation session. Sweeping, washing and removing residue created the starting point for the interior work I described next.
I planned the openings and mounting access before enclosing the interior.
Alternative products
Two alternatives to compare
Superior Pump provides a quarter-horsepower unit. The compact Acquaer is one-sixth horsepower, while the larger Acquaer adds automatic operation in a one-half-horsepower format.
Acquaer Compact Utility Pump
This submersible utility pump has a one-sixth-horsepower motor. Its thermoplastic housing and ten-foot power cord form a portable water-transfer unit.