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View into drop tube from above <br />L To ilatermine lower' tube distance from tank <br />hgttom to bottom of cut <br />Subtract valve length (W) from distance to tank <br />bottom (A) <br />Min is)- <br />Note: Lower tube clearance must meet tank manu- <br />facturer requiretnents and all Al-U, local, state, and na- <br />tional ccxies. Typical clearance is about 4. II lower <br />tube clearance is not met valve must be removed and <br />adjusted to meet these requirements, <br />To determine lower tube distance from tank <br />bottom (atop of cut <br />Subtract valve length R)) from distance (t} mink <br />bott ant? (13) <br />01= (B) — = <br />Note: Lower tube d stance from tank bottom to top <br />of cut Mist meet all AI-L1, local, state, and national <br />codes, f Dr reference per 40 CfR 63 subpan CCCCCC / <br />NESHAP line lower tube can be no more than IV from <br />the bottom of the tank. If lower tube distance is not <br />met valve must be removed and adjusted to meet these <br />requirernent5. <br />To determine float alignment: <br />Looking into upper tube (see figure) the float should be <br />aligned A long the length of the tank_ If float Js not <br />airy ned properly adjustments need to be made. <br />21