Hi Gaz - I bought a couple of williamsons connectors - white plastic - having seen them in a photo on their website - but still got little leaks - I used the plastic hose clamps so maybe a jubilee clip would have been betteranyway i changed to standard hoselock fittings - screw on tap connector with pleanty of thread tape and then the standard hose connector - no probs so far though the same set up on my di is not so foolproof
hello gaz,any female 1/2" thread with a 1/2" barb should fit try marine supply shops!stuartskypole systems