Both the Intertap PC and Intertap SS can be turned into an Growler Filler with the use of this spout.

The Growler FIller Spout has a 13mm barb which you can attach some hose so you can fill your growler from the bottom up to minimise foaming. 

Simply un-screw the regular nozzle and screw on the Growler Filler Spout with hose attached and use as you would a growler filler tap.

Note: This item is the Growler Filler Spout only (does not include tap) to make a complete unit you will also need to purchase a tap, tap handle and a shank, links for these are below.