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D�Z' <br /> Appendix g <br /> 71 SO Overfill Valve in Tank Shut off Level Worksheet <br /> Important: This is meant to be supplemental►vorksheet 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(AHJ)and review ioca$,state,and national codes to determine tha regulatory raquirements 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 7150 inlet tube flange to the cast <br /> lug in the 71 SO body(see figures),upper tube length, <br /> Nate: the Upper Tube Length must be at least 16"to In- <br /> ciude the protective bend in the tube, <br /> (n)= •g5 _— t� r• <br /> Distanre from the 71 SO inlet tube flange to the top and <br /> b ottGm o1 lower to be,vpl-ve iCllgj V. � <br /> (U)_� •. � Upper <br /> Tu be <br /> €distance from the 71 SO inlet tube flange to the bottom _j <br /> of the tank. Dote:if a tank bottom protector is present it ' <br /> may be necessary to add this thickness to dimension <br /> (OPVV 6111 &6 1 T P models acid o,6") ; (W)Valve <br /> l6)= Length, <br /> 6attorn off <br /> From the tank calibration chart provided by tank manu- cut rf <br /> facturer find the dipstick number M which corresponds ;a <br /> to the 100%V❑Iume, (e) <br /> (Y) 6AS ToTank }j <br /> M <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length Q from distance to tank (tt)Valve _ Chart t <br /> bottom(@) Length, 100% { <br /> M =(6)—0- tap of cut Volume it <br /> Dipstick �E <br /> Using the yank calibration chart provided by the tank <br /> manufacturer determine the tank capacity at the cal- <br /> cui'ated 00 dimension and Cite 100o/o volume M tank y{ <br /> , <br /> capacity. U <br /> (X)tank capacity in gallons=�5 4 <br /> (Y)tank capacity in gallons= C7 <br /> 500/0w(X)capacity I(Y)capacity x100= � <br /> Note: The overfill valve must be installed perAHJ require- <br /> ments and all applicable local,state,and national codes. If <br /> the overfill valve is set above the allDwable shut-off percent- <br /> age the overfill valve must be removed and replaced. For <br /> reference q0 CFR part 280 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> �1 <br />