2 Liter Funnel Adapter

So I ran into a situation where I needed to shoot some water through my up-stairs AC drain pipe to clean it out.

Not near any water source to get a hose up there, and was looking for a simple way to put water in with a funnel but also add some pressure. So that's where this comes in. Simply fill a 2 liter with water, twist this on, then turn over an put pressure on the cap.

Will need to do some testing if the threads hold for this but they should.