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ANO&// AGD4A <br />Valves Air Gap Drains I For 2-1/2" -12" Reduced Pressure Backflow Preventers <br />PUBMIT Ta SHEET <br />Job Name: <br />Job Location: <br />Engineer <br />Co tractor: <br />lag: <br />I�C)tl <br />IteCr <br />Wimp alr�C:)isf: <br />', <br />DESCRIPTION <br />Apollo'Air Gap Drains (AGD4Ax) are designed to funnel minor discharges from a Reduced Pressure Backflow Preventer's relief valve due to line pressure fluctuations <br />and/or minor check valve fouling into the drainage system. Drainage piping is easily attached to the threaded portion of the AGD, The female NPT size is listed in the <br />table under "Outlet Connection". Drainage piping may be attached with a coupling and the appropriate cement or with a flexible pipe coupling, Piping compatible <br />with the outlet is listed in the table under "Outlet Pipe Size". <br />Air Gap Drains are NOT designed to collect the full discharge capacity of the relief valve. Please refer to page 3 for relief valve full discharge rates. <br />STANDARD MATERIALS LIST <br />AGD4A6 <br />ABS and PVC <br />AGD4A8 <br />Air, <br />AGD4Al2 <br />ElpoxyCoatedSteel <br />FASTENERS <br />AGD4A6 (2-1/2" - 6") <br />