Filling adapter (claw angle adjustment)

A filling adapter for a container comprising:

• a first, non-rotatable part comprising a union nut and a toothing comprising a plurality of circumferentially arranged teeth spaced apart by a pitch distance;
• and
• a second, rotatable part comprising a plurality of clamping claws, a threaded portion and a pin;
• wherein when the union nut is disengaged from the threaded portion, the second part is rotatable relative to the first part about a longitudinal axis of the filling adapter;
• wherein when the second part is at a desired rotational position relative to the first part, the pin engages the toothing and the union nut engages the threaded portion such that the second part is rotationally fixed relative to the first part;
• and
• wherein the clamping claws are rotationally adjustable in discrete increments defined by the pitch distance to accommodate the container to be filled.