My boat builder used to soft solder a compression fitting olive onto plain copper pipe to provide a rubber hose interface.

Without some sort of single or better multiple oversize lip you won't get a liquid tight fitting to rubber hose - even with two hose clamps. Learn't the hard way blush


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone