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Step 3: Find measurement B from the chart below. It is the distance from the <br />maximum fluid height allowed to the inside top of the tank. Calculations are <br />based on cylindrical tanks with flat ends. For exact dimensions, consult the <br />tank gauge chart provided with your tank. NFPA30 Guidelines limit tank fill to <br />95%. <br />The A1100 Overfill Prevention Valve is not recommended for tanks under 6' in <br />diameter. <br />IVICGIJUI CI I IGI It V, i 'a -Fc <br />cut length measure here <br />Ste12 4: To determine the top tube cut length, add A and B. <br />Step 5: Place tape measure at the 95% fill mark on the valve and measure up <br />the tube as shown. Mark and cut the tube at the C measurement length. <br />Note: If you are using an unflanged tube, you will require part #566679 collar kit. <br />Step 6: Wrap the paper drilling template (p/n 568351, supplied) over the drop <br />tube and tape in place. Line up cut-off line on template with the cut length C. <br />NOTE: The 566675 Drill Fixture is recommended to make this step more accu- <br />rate and to reduce assembly time. <br />4 <br />95% Shut-off <br />Tank Diameter <br />B Dimension <br />Feet <br />Meters <br />Inches <br />MM <br />6.5' <br />1.98 <br />7.5" <br />190 <br />7.0' <br />2.13 <br />8.0" <br />203 <br />7.6' <br />2.29 <br />9.0" <br />229 <br />8.0' <br />2.44 <br />9.5" <br />241 <br />8.2' <br />2.50 <br />9.5" <br />241 <br />8.5' <br />2.59 <br />10.0" <br />254 <br />9.0' <br />2.74 <br />10.5" <br />267 <br />9.5' <br />2.90 <br />11.0" <br />279 <br />10.0' <br />3.05 <br />.11.5" <br />292 <br />12.0' <br />3.66 <br />14.0" <br />336 <br />The A1100 Overfill Prevention Valve is not recommended for tanks under 6' in <br />diameter. <br />IVICGIJUI CI I IGI It V, i 'a -Fc <br />cut length measure here <br />Ste12 4: To determine the top tube cut length, add A and B. <br />Step 5: Place tape measure at the 95% fill mark on the valve and measure up <br />the tube as shown. Mark and cut the tube at the C measurement length. <br />Note: If you are using an unflanged tube, you will require part #566679 collar kit. <br />Step 6: Wrap the paper drilling template (p/n 568351, supplied) over the drop <br />tube and tape in place. Line up cut-off line on template with the cut length C. <br />NOTE: The 566675 Drill Fixture is recommended to make this step more accu- <br />rate and to reduce assembly time. <br />4 <br />