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6 API RECOMMENDED PRACTICE 1604 <br /> Eductor type <br /> (See detail 1A) <br /> 4(drop) <br /> Air flow Eductor " Compressed air <br /> G.L <br /> Vent1,lAIr flowDeta111A <br /> Figure 1—Eductor-Type Air Movbr <br /> Quick couple '--Ii Hose to air , <br /> compressor <br /> Diffused air blower <br /> (See detail 2A) <br /> Pressure reducing <br /> valve with gauge <br /> Ground cable <br /> (See note) <br /> Brass pipe IYs"dia. <br /> with four rows of 35 — <br /> Air 'A" holes <br /> Max (140 holes totap Shut-off Detail 2A <br /> 5 psig _�, flow valve <br /> 4"to first hole <br /> Pipe must touch <br /> tank bottom <br /> for ground <br /> Note:Ground cable brued to pipe must be clamped to fig pipe.Use 12 gauge ground wirc from fill pipe <br /> to water pipe or ground rod. ' <br /> Figure 2—Diffused Air Blower <br />