We offer brass fittings/accessories for our water tanks in standard inch sizes from ½ - 1 inch. You can either use our pre-configured Brass Tank Connection Sets for easy installation on the brass threaded BSP outlet of the water tanks, or you can build your own system using individual parts. When using brass accessories, always ensure that the female and male threads are compatible in the relevant inch thread size. In principle, you can combine brass and plastic fittings. Just make sure that the generally sharper brass thread does not cut the softer plastic thread and cause leaks. When installing threaded fittings, whether brass or plastic, it is always advisable to seal the thread with Teflon tape, hemp or thread sealant to ensure a tight connection in the long term.