IBC Water Inlet and Overflow DN90

Update 14.05.2026:

The original model fits a thread diameter of approx 157mm on the tank with a thread pitch of 7mm (tank opening of approx 140mm)

Due to the circumstances and initial lack of knowledge about common IBC opening cross-sections, I am adding a commercially available size

Since my tank has a rather rare intermediate size, I am adding the models for a DN150 (coarse thread S165x7)

I have only adapted the flange and the union nut. The other parts are unchanged and fit with it

I have no way to test the printed model. The model was designed according to a drawing template

Initially only available as a download in .stl format. A print profile will follow

Please measure beforehand and comment if further adjustments are necessary

Have fun

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This is a water inlet (top opening) and overflow for a 1000l IBC container

A suitable connection for the top opening will be designed in the future. Currently, there is simply a large opening to the filter to hang a pipe into it. I also want to develop a type of self-actuating flap that only opens when water is supplied and is otherwise closed. This could prevent a mosquito infestation

It is designed in multiple parts so that the union nut can be slid over the flange and then the branch (inlet/outlet) is screwed onto the flange

All threads should work without post-processing

A one-piece model (Print in Place) is already in progress

For sealing the clamping surfaces, there are two gaskets that must be printed from TPU (shown in red)

The sieve can currently be simply hooked in from above and is not further secured

A DN90 HT pipe can be connected to the DN90 “drain” to divert excess water

Have fun