Weld-on neck for Stant expansion tank plug outer diameter 43mm inner diameter 19mm
Reference:
AS-RAD-NEC2
This drain is specially manufactured to be welded onto your expansion vessel, effectively replacing your old drain.
With an external diameter of 43mm, an internal diameter of 19mm, a 36mm cap span and an internal diameter of 19mm, a 36mm cap span and a discharge tube diameter of 8mm.
