 Large Brass Tank Outlet Fitting with external and internal outlet treads. The internal thread is one size smaller than the stated fitting size e.g.Â
A 100mm tank outlet will have an external 100mm BSP thread and an internal 80mm BSP thread.
 Large Brass Tank Outlet Fitting with external and internal outlet treads. The internal thread is one size smaller than the stated fitting size e.g.Â
A 100mm tank outlet will have an external 100mm BSP thread and an internal 80mm BSP thread.