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11 <br />The A90 drop tube is used in coax- <br />ial fill systems. Since it is a tube within a <br />tube, it can act in the sarne manner as <br />a ball float valve to prevent overfilling of <br />underground tanks. <br />The product is dropped through the <br />inner-most tube and vapors return to <br />the tanker through the space between <br />the inner and outer tube. <br />When the product covers the outer <br />tube, vapors can no longer return to the <br />tanker. Product flow is reduced by 99% <br />and the driver has time to close the <br />valves on the tanker before an overfill <br />occurs. The A90 has a vapor recovery <br />efficiency rating in excess of 95%. <br />Required by legislation in some areas <br />of the country. Comes complete with <br />adapter and bushing, as required. Use <br />the A97 fill cap and F298 elbow or <br />equivalent. SOLD IN CARTONS OF <br />TWO. <br />Model No. <br />Fuel <br />Size <br />Weight <br />Tube No. <br />Adapter <br />Bushing <br />A90-001 <br />Leaded/Unleaded <br />4" x 12' <br />13 lbs. <br />491511 <br />491687 <br />N/A <br />A90-002 <br />Leaded/Unleaded <br />3" x 12' <br />9 lbs. <br />491512 <br />491687 <br />491689 <br />A90-005 <br />Leaded/Unleaded <br />4" x 14' <br />15 lbs. <br />491511 <br />A96-001 <br />N/A <br />The A20 drop tube is used in con- <br />ventional non -vapor recovery and <br />dual point vapor recovery fill systems. <br />The drop tube fits directly into the <br />tank riser pipe to permit tight fill <br />submerged filling with reduced <br />turbulance and minimal vapor loss. <br />Light weight aluminum for easy han- <br />dling and installation. Complete with <br />buna gasket. Cut 45° in the field to fit. <br />Use with the Emco Wheaton A30 <br />adapter and A97 fill cap. Use the <br />F523 Elbow or equivalent. SOLD IN <br />CARTONS OF FOUR. <br />Model No. Size Weight <br />A20-001 <br />3" x 10' <br />3 lbs. <br />A20-002 <br />3" x 11' <br />3'/2 lbs. <br />A20-003 <br />4" x 10' <br />41/2 lbs. <br />A20-004 <br />4" x 12' <br />5 lbs. <br />A20-006 (.065 Wall Thickness) <br />4" x 12' <br />51/2 lbs. <br />A20-007 <br />2" x 10' <br />2112 lbs. <br />A20-008 <br />4" x 14' <br />51/2 lbs. <br />A20-009 <br />4" x 14' <br />6 lbs. <br />