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W . O . # NW 1 - 2338728 Cust Ref# : COCO - 0015297489 <br /> t1dl <br /> 7150 overfill Valve in Tank Shut off i.evel Worksheet <br /> IrripalIgnt, This Is meant to be supplemental worksheet and not a substitute to following the installation <br /> manual Instructions. All length measurements are In Inches, Please contact the Authority Having Jurisdic- <br /> tion (AFl1) 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 flange to the cast <br /> lug in the 71 SO body (see figures), upper tube length. <br /> Notega the Upper Tube Length must be at least 16' to <br /> Include the protective bend In the tube. <br /> Distance from the 7150 inlet tube flange to the top and <br /> bottom of lower tube, valve length. (D) <br /> 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 <br /> may be necessaryto add this thickness to dimension <br /> (OPW 6111 & 61TP models add 0.6") (W) Valve I <br /> Length, <br /> bottom of i <br /> From the tank calibration chart provided by tank manu- cut <br /> facturer find the dipstick number (rf) which corresponds <br /> to the 100% volume, (8) <br /> To Tank , <br /> 1 . To determine shut-off percentage: an <br /> Tank <br /> Subtract upper tube length (D) from distance to tank (u) Wive Chart <br /> j bottom (B) 1 Length, 100% vol - <br />' J1—D tap of cut ume Di <br /> (X) = (0) – (D) - 2" = s _ P <br /> stick <br />` Using the tank calibration chart provided by the tank t <br /> manufacturer determine the tank capacity at the cal- <br /> culated (?t) dimension and the 100% volume (Y} tank <br /> capacity. ` <br /> (X) tank capacity In gallons = � I <br /> U <br /> (Y) tank capacity in gallons qt 4 <br /> S = (X) capacity / (tf) capacity x100 <br /> Mote: The overfill valve must be installed per AW requlre- <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 280 Subpart B Section 280.20 overfill <br /> valves should be set to a 'maximum of SIM <br /> �� � K 20 <br />