I know flexible hoses are a regular failure point and I wouldn't look to do this upstream of a tap, but does the arrangement below look OK. It's between two deck taps and the filler so should never see significant pressure and isn't pressurised when the taps are closed. I'm planning to pop Bonfix compression fitting inserts with o-rings into the compression / BSP tee (15 x 15 x 1/2). Only mocked up at this point.

 

 

For permanently pressurised flexible connections, I like the RigidLine range: 

    https://ridgelinetubes.com/flexis/

    https://www.monsterplumb.co.uk/ridgeline-flexible-connectors

    https://www.macdonaldplumbingsupplies.com/ridgeline-m176

This is an entirely different thread to the one I was expecting! I thought it was about building in earthquake zones! (Flexible House Guidance Please)

19 minutes ago, Redbeard said:

This is an entirely different thread to the one I was expecting! I thought it was about building in earthquake zones! (Flexible House Guidance Please)

Oops!

It’s too good a typo for me to edit out lol.

 

 

1 hour ago, MortarThePoint said:

I know flexible hoses are a regular failure point and I wouldn't look to do this upstream of a tap, but does the arrangement below look OK. It's between two deck taps and the filler so should never see significant pressure and isn't pressurised when the taps are closed. I'm planning to pop Bonfix compression fitting inserts with o-rings into the compression / BSP tee (15 x 15 x 1/2). Only mocked up at this point.

 

 

For permanently pressurised flexible connections, I like the RigidLine range: 

    https://ridgelinetubes.com/flexis/

    https://www.monsterplumb.co.uk/ridgeline-flexible-connectors

    https://www.macdonaldplumbingsupplies.com/ridgeline-m176

Yup. All looks good, but make sure in the ends of the flexis, there is sometimes a brass ring in the middle that protrudes further out than the rubber seal when it’s been tightened up. 
 

If the rubber is totally flat face then all good   

 

That arrangement looks sensible to me for that spot between the taps, especially as it is not left under pressure when the taps are closed. I would just keep the flexis with a gentle bend and no kink, and leave them where you can see and reach them for a quick check. After you first run it, dry the joints and check again after a day, as a slow weep is much easier to catch early than after it has been boxed in.