The inlet pipe to our water heater leaked, causing water to run down into the heater's casing and rust it out from the inside. After replacing the heater I made this to deflect water in the case of any future leaks. Printable as one piece for new pipes or in two pieces for existing pipes. Can be scaled in the x/y/z axes to fit different pipe sizes.

Inner diameter: 27mm
Outer diameter: 64mm
Height: 11mm