B britkath Active Member Joined Oct 2, 2013 Messages 27 Reaction score 2 Location , Dec 11, 2014 #1 On the inlet side of a grease trap that has a 3" inlet, is the only vent that is needed, the one for the flow control device (3/4"), or does the 3" pipe also need a 1.5" vent on it?
On the inlet side of a grease trap that has a 3" inlet, is the only vent that is needed, the one for the flow control device (3/4"), or does the 3" pipe also need a 1.5" vent on it?
D dirtyharry New Member Joined Dec 13, 2014 Messages 3 Reaction score 0 Location , Dec 19, 2014 #2 Both sides should be vented
