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The use of a HAG-2 Horizontal Air Gap requires the flow from the sink be further restricted to meet the flow rate of a Big Dipper with 2" Connection. An AGFC-1 must be installed at each drain valve which will drain into the horizontal air gap. Use of a HAG-2 or HAG-3 with a Big Dipper requires that the flow control (MFC-20 or MFC-25) be removed from the inlet of the unit.
Flow Control to be attached to bottom of drain valve for use with HAG-2. The HAG-2 comes with three AGFC-1.