1" union nut with 1" slip tailpiece and O-Ring - 400-1990
Dimensions
Inside diameter of the union thread : 48 mm or 1-inch FBT
Inside diameter smooth side: 33 mm for 1-inch pipe
Outside diameter of the corresponding male thread on the pump: 50 mm
This union has a nut that fits on pumps with a 48 mm outside diameter thread (this type of thread is known as 1-inch MBT), and connects to 1-inch pipe.
It is suitable for use with several small pumps like the Waterway Tiny Might.
The o-ring is provided.