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W . O . # NW1 - 2338728 Cust Ref # : COCO - 0015297489 <br /> ;��endlx <br /> 71SO Overfill Valve In Tank Shut off Level Worksheet <br /> Importat This Is meant to be supplemental worksheet and not a substitute to following the Installation <br /> manual Instructions. All length measurement.4 are in Inches. ease con the Authority Having Jurisdlc- <br /> tion (AHJ) and review local, state, and national codes to determine the regulatory requirements governing <br /> shut-off capacity In your region, as well as take Into account other considerations such as extreme tank tilt. <br /> Take the following measurements with the valve in- <br /> stalled in the tank, _ <br /> Distance from the 71 SO inlet tube flartgo to the cast <br /> lug In the 7150 body (see figures), upper tube length. <br /> Notes the Upper Tube Length must be at least 160 to <br /> include the protective bend In the tube. <br /> (D) <br /> Distance from the 7150 inlet tube flange to the top and <br /> bottom of lower tube, valve length. <br /> (u) <br /> (U) upper <br /> Tube <br /> Distance from the 71 SO inlet tube flange to the bottom <br /> of the tank Note: If a tank bottom protector is present it I <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 & 61 TP models add 0.6 ) (W) valve <br /> Lente, <br /> bottom of <br /> From the tank calibration chart provided by tank manu- cut <br /> facturer find the dipstick number (` ) which corresponds <br /> to the 100% volume. (el <br /> (y) To Tank <br /> 1 . To determine shut-off percentages I Tank <br /> Subtract upper tube length (D) from distance to tank (U) Valve Chart <br /> bottom (B) Length, 100% vol - <br /> (X) = (N) � (D) _ * = top of cut ume DIP- <br /> stick <br /> Using the tank calibration chart provided by the tank <br /> manufacturer determine the tants capacity at the cal- <br /> culated (x) dimension and the 100% volume (Y) tank <br /> capacity. <br /> ()() tank capacity In gallons = <br /> (Y) tank capacity In gallons <br /> S = (1C) capacityI (1r) capacity x100 = <br /> Note: Theoverfill valve must be installed per AM require- <br /> ments and', all applicable local, state, and national codes. if <br /> the overfill valve is set above the allowable shut-off percent- <br /> age the overfill valve must be removed and replaced. For <br /> reference 40 CFR part 284 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> t 20 <br /> I <br /> 1' <br />