My pipe-fitting purchases included a pack of white 1.5-inch slip-to-slip PVC couplings. I have grouped the straight-coupling options here.
The featured Amazon option is LASCO 1.5-Inch Slip Coupling.
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
The LASCO is a rigid slip coupling, and the Genova is a rigid repair coupling. The Fernco alternative joins plastic pipe with a flexible sleeve and clamps, giving it a different joint format from the two rigid fittings.
Genova 1.5-Inch Repair Coupling
This Genova repair coupling provides a straight rigid connection for nominal 1.5-inch pipe. Its repair format offers another coupling design for comparing pipe joints.
This Fernco coupling joins nominal 1.5-inch plastic pipe with a flexible sleeve. Metal clamps tighten around the ends instead of forming a rigid socket joint.
