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3/4 0(0 DSL' "l � <br /> Appendix B <br /> 7150 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- <br /> stalled in the tank: , <br /> Distance from the 7150 inlet tube flange to the cast <br /> lug in the 7150 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) <br /> Distance from the 7150 unlet tube flange to the top aid <br /> 1. <br /> L -1 - 1 .f, j <br /> 4 LtN�lt V :U4Jai - c tiu' v� -.iy i, <br /> (U) _ 4 YLI l I } ppe <br /> Tube <br /> i <br /> Distance from the 7150 inlet tube flange to tl-e bottom , <br /> of the tank, dote:If a tank bottom protector is present it ! I <br /> may be necessary to add this thickness to dimension �I I <br /> (OPW 6111 &61TP models add 0.6") ! (W',valve <br /> (�)= ) 7 ff I}i Length, ; <br /> bottom of } <br /> From the tank calibration chart provided by tank mane- cut <br /> facturer find the dipstick number(Y)which corresponds <br /> to the 1001/0 volume. (B) <br /> (Y) To Tank <br /> 1 !1 <br /> 1. To determine shut-off percentage; Tank <br /> Subtract upper tube length(D)from distance to tank (u)Valve Chart <br /> bottom(B) j/ Length: 1000/0 <br /> (X)_(S)-(D)-a"= C top of cut volume ,i <br /> ! <br /> Dipstick <br /> Using the tank 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= O g ' <br /> (Y) tank capacity in gallons= 5 h, 'r <br /> SO%=(X)capacity/(Y)capacity xi 00= , b 7d <br /> Note: The overfill valve must be installed per AHJ require- <br /> ments and all applicable local,state,and nat'onal 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 pa•t 28D Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 950n <br /> 21 <br />