Brass Tank Outlet 3" with Left Handed Nut Thread Pressure Reducer Brass All-Thread 1 1/2" x

Brass All-Thread 1 1/2" x 150mm - Brass pipe threaded from end to end with BSP thread

Brass 1" Barb x 1" Male Swivel Threaded Hose Tail - Brass swivel hose tail with BSP male thread on one end and a hose barb on the other

Brass All-Thread 1 1/2" x 300mm - Brass pipe threaded from end to end with BSP thread

This can look especially bad for conservation-conscious municipalities

Brass Tank Outlet 3" with Left Handed Nut Thread Pressure Reducer Brass All-Thread 1 1/2" xBrass 3" Male Tank Outlet with Left Hand Thread Brass tank outlet with left hand thread. Because the thread tightens the opposite way to normal BSP thread the tank outlet tightens as you screw a fitting onto it.