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2. To determine lower tube distance from tank <br /> bottom to bottom of cut: <br /> Subtract valve length (W)from distance to tank <br /> bottom (B) <br /> (V)_(B)-(W)_ <br /> Cast lug <br /> Note: Lower tube clearance must meet tank manufac- in 71 SO <br /> turer requirements and all AHJ, local,state,and national body <br /> codes. Typical clearance is about 4". If lower tube clear- Float direction <br /> ance is not met valve must be removed and adjusted to <br /> meet these requirements. <br /> 3. To determine lower tube distance from tank <br /> bottom to top of cut: <br /> Subtract valve length (U)from distance to tank <br /> bottom (B) <br /> (T)=(B)-(U)= <br /> View into drop tube from above <br /> Note: Lower tube distance from tank bottom to top of <br /> cut must meet all AHJ, local,state,and national codes. <br /> For reference per 40 CFR 63 subpart CCCCCC/NESHAP <br /> the lower tube can be no more than 6"from the bottom <br /> of the tank. If lower tube distance is not met valve must <br /> be removed and adjusted to meet these requirements. <br /> 4. To determine float alignment: <br /> Looking into upper tube(see figure)the float should be <br /> aligned along the length of the tank. If float is not <br /> aligned properly adjustments need to be made. <br /> 22 <br />