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%743 <br /> Appendix B <br /> 7150 0verfiII Valve in Tank Shut off Level Worksheet <br /> Important: This is meant to be supplemental worksheet and not a substitute to follovwing the installation <br /> manual instructions. All length measurements are in inches, Please contact the Authority Having Jurisdic- <br /> tion (AHJ)and review local,state,and national codes to determine the regulatory requirements governing <br /> shut-off capacity in your region,as wall as take into account other considerations such as extreme tank tilt. <br /> Take the following measurements with the valve in- <br /> stalled in theta nk: <br /> Distance from the 7150 inlet tube flange to the cast <br /> lug in the 71 Sa body(see figures),upper tube length, <br /> Note: the Upper Tube Length must be at least 16"to in- <br /> clude the protective bend in the tube. <br /> (D)� t2�s <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of It}viler tube,valve iciigliE. y' <br /> (W)=1$3 -S <br /> (U);-174-B- Upper <br /> Tu be <br /> Ustance front the 71SO inlet tube Pange to the bottom "s_ <br /> of the tank. Note:if a tartk bottom protector is present it ' <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 &617P models add 0.b"} (1N)Valve <br /> [B)_ha E Length, tl <br /> bottom of <4 <br /> From the tank calibration chart provided by tank manu- E cut +{ <br /> facturer Find the dipstick number(Y)which Corresponds ;5 <br /> to the 100%volume. <br /> (Y)_ aS To Tank it <br /> 1. To determine shut-off percentage: (Y) <br /> Tank <br /> Subtract upper tube length(D)from distance to tank (U)Valve _ Chart <br /> bottom(B) Length, 100% <br /> (X)=(13) (D)-z"- [a 3, _ top of cut Votume 41 <br /> Dipstick i <br /> Using the tank calibration chart provided by the tank <br /> rnanufacturer determine the tank capacity at the cal• ; <br /> culated(X) dimension and the 100%volume(Y)tank ;f <br /> capacity. ?r <br /> (X)tank capacity in gallons= ,j q?! r <br /> (Y)tank capacity in gallons= <br /> so%=(X)capacity 1(Y)capacity x100=�� <br /> Nate; The overfill valve must be installed per AHJ require- <br /> ments and all appIicahle 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 44 CFR part 280 Subpart B Section 260.20 overfill <br /> valves should be set to a maximum of 95°5. <br /> 21 <br />