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W.O.# NW1-2348303 <br />CkevrOiN <br />Cust Ref# : COCO-0015345128 <br />r') t I_ Cllr o i' 4, L' <br />�ti 9y z � l 8pneredix B <br />7750 overfill Valve in Tank Shut off level Worksheet <br />Importarl This Is meant to be supple"_tal worksheet and not a substitute to following the Installatlon <br />manual instruct ions. All length measurements are In Inches. Please contact the Authority Having Jurisdic <br />tion IAHJ€ and review local, state, and national codes to determine the regulatory requirerneitis 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 71SO inlet tube flange to the cast <br />lug in the 7150 body (sec figures), upper tube length. <br />NYote: the Upper Tube Length must be at least 16" to <br />include the protective bend in the tube. <br />(D)=U/ — <br />INstance from the 71 SO inlet tube flange to the top and <br />bottom of lower tube. value length. <br />W =. W - <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 necessary to add this thickness to dimension <br />(OPW 611IM TP models add 0.6") <br />tai = <br />From the tank calibration chart provided by tank manu- <br />facturer find the dipstick number (Y) which corresponds <br />to the 1 tJ vo u <br />m = z ��"' <br />1. To determine shut-off percentage: <br />Subtract upper tube length (n) from distance to tank <br />bottom (8) <br />(X)=(B)-(D)-2"= alyS <br />Using the tank calibration chart provided by the tank <br />imanufacturer determine the tank capacity at the cal- <br />culated (x) dimension and the 100% volume (Y) tank <br />capacity. <br />) tank capacity in gallons = <br />tank capacity in gallons- G z Y ' <br />W0= (}l:) capacity/ (Y) capacity x100 = _ ► [ r <br />(o) <br />Upper <br />Tube <br />(W) Valve <br />length, <br />bottom of <br />cut <br />(e) <br />To Tank <br />(U) Valve <br />Length, <br />top of CO <br />M <br />Tank <br />Chart <br />100% Vol- <br />ume Dip- <br />st** <br />!Vote: The overfill waive must be installed per AM require- <br />ment_ and all app€icable 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 a Section 2 80.2 0 overfill <br />valves should be set to a maximum of 95%. <br />20 <br />