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Tech: Randy Wilkerson Tank: 02 Grade: 91 <br /> Appendix 13 <br /> 71 So Overfill Valve in Tank Shut off Level Worksheet <br /> Important: 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(AHJ)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- E b <br /> stalled in the tank: <br /> Distance from the 71 SO inlet tube flange to the cast F EB 2 4 2020 <br /> lug in the 71 SO 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. E <br /> NVIRONMENTAL HEA TH <br /> (D)= 48.50 inches <br /> i <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length. <br /> 127.50 (D) <br /> (W)= _inches Upper <br /> (u)— <br /> 127.50 inches Tube <br /> Distance from the 7150 inlet tube flange to the bottom L <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 &61TP models add 0.6 ) (W)Valve <br /> (B)= 133.00 inches Length, <br /> bottom of <br /> From the tank calibration chart provided by tank manu- L cut <br /> facturer find the dipstick number(Y)which corresponds <br /> to the 100%volume. (B) <br /> (y)= 95.00 inches To Tank <br /> 1. To determine shut-off percentage: Tank I� <br /> Subtract upper tube length(D)from distance to tank (U)Valve _ Chart <br /> bottom (B) Length, 100% <br /> (X)=(B)-(D)-2"= e2 50 inches top of cut Volume <br /> Dipstick <br /> Using thetank calibration chart provided by the tank <br /> manufacturer determine the tank capacity at the cal- <br /> culated(X)dimension and the 100%volume(Y)tank <br /> capacity. <br /> (X)tank capacity in gallons=?3_--- <br /> (Y)tank capacity in gallons= 14 } <br /> SO%=(X)capacity/(Y) capacity x100= 91.96 <br /> Note: The overfill valve must be installed per AHJ require- <br /> Results: Pass ments and all applicable local,state,and national codes. If <br /> the overfill valve is set above the allowable shut-off percent- <br /> If SO% =90.0%-95.0% condition Is a pass. age the overfill valve must be removed and replaced. For <br /> If SO% =<=89.9%or>=95.1%condition reference40 CFR part 280 Subpart B Section 280.20 overfill <br /> is a fail Need Repairs. valves should be set to a maximum of 95%. <br /> 21 <br />