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AppgndFx B <br /> 71 SO Overfill Valve in Tank Shut off Level Worksheet <br /> e . <br /> Important; This Is meant to be supplemental worksheet and not a substitute to following the Installati <br /> manual instructions. All length measurements are In inches. Please contact the Authority Having Juris <br /> tion(AHA and feview 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 lnthe tank: <br /> Distance from the 71 SO inlet tube flange to the Gpt <br /> lug in the 71 SO body(see figures),upper tubkieogth. <br /> Note: the Upper Tube Length must be at least 16s in- - <br /> clude the protective bend in the tube. " <br /> pnre from the 71 SO inlet tube flange to the top and 1 d <br /> - � rriof'tower.tube,valve length. (D) <br /> E �. �yI(} 7�/ Upper , <br /> �) Tube <br /> *;. r 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 6111 &61 TP models add 0.6 ) (W)Valve <br /> (B)= rS`( °�/ I S-q- �Zy Length, <br /> �r bottom of <br /> Rom the tank calibration chart provided by tank manu- 'b cut <br /> i <br /> fa4urer find the dipstick number(Y)which corresponds <br /> to the 100%volume. �) <br /> (Y)= 11 I`_4Z,ti To Tank <br /> M }, <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(D)from distance to tank (U)Valve Chart <br /> bottom(B) Length, # 100% <br /> (x)=(B)-(D)-�"_ /©�_ ?-- 5 top of cut Volume <br /> Dipstick <br /> Using the tank calib_ chart provided by the tank + <br /> manufacturer determ he tank capacityat the cal- <br /> culated(X)dimension and the 100%volume M tank <br /> capacity. <br /> (X)tank capacity In gallons=--' <br /> (Y)tank capaclky#n gallonsAl. <br /> SO%=(X)capacity/(Y)capacity x100 y t , <br /> Note:.The overfill valve must be installed per AIU require. <br /> meets and all applicable local,state,an,dnatlonal,codc3: <br /> the'overfill valve is set above the allowable shut-off percent. <br /> age the overfill valve must be removed and replaced. For <br /> `teference40 CFR part 280 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />