Hardware Made Easy!
Various
4" x 3" flexible reducing coupling with 2 stainless steel clamps, connects cast iron or plastic to cast iron or plastic.
Bernzomatic® Utility Torch Plumbing Kit
Frost King Foam Elbow Pipe Insulation Polyethylene
Tigre Combination Tee (Insert X Insert X Mipt)
Elkhart Products 90° Elbow-Close Ruff
Abbott Rubber Polyethylene Tubing