When using the Dual Valve Tap on the GF30, is there enough room to take a sample and dump the yeast?
Yes, to dump your yeast, you will need something similar to a 500 ml (16.9 fl oz) beaker for collection.
If you use something larger to collect your yeast in, you will need 19 mm (0.75”) (inner diameter (ID)) tubing for collection.
You can take a sample for a refractometer reading from the sample outlet but if you would like to take a sample big enough for a hydrometer reading, you will need a 10 mm (0.39”) (inner diameter (ID)) tubing to attached to the sample outlet.