Concealed system connection space

[Oheck]

We have a concealed cistern that has come as a deal with a 500mm unit.
The issue we're having is that the cistern is a side entry for the water inlet & from the inlet nut to the unit wall we have only 5cm.
Due to the lack of space we're struggling to find a connector in either push fit or compression.
Any suggestions would be appreciated.

 

[HERTS P&D]

You can adjust the float valve so that it is more into the cistern, play around with the nuts.

Andy

 

[Oheck]

Forgot to add, the nut & thread are fixed to the outside of the cistern.

 

[HERTS P&D]

Post a close up pictue of the side of your cistern.

Andy

 

[Oheck]

We tried this option of a push fit iso valve but it's not sealing properly