I noticed a wall outlet hose connection by Hansgrohe which has a back flow preventer, (model no. 27458000).
https://www.amazon.co.uk/Hansgrohe-...=1497453880&sr=8-72&keywords=wall+hose+outlet
I can get a good quality unbranded solid brass connector which does not have back flow preventer for about £5.
I'm not sure what the backflow preventer is, or if it is needed/required/preferable.
https://www.amazon.co.uk/Hansgrohe-...=1497453880&sr=8-72&keywords=wall+hose+outlet
I can get a good quality unbranded solid brass connector which does not have back flow preventer for about £5.
I'm not sure what the backflow preventer is, or if it is needed/required/preferable.