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r <br /> Appendix C (contigued ) <br /> 7150 Overfill Valve in Tank Complete 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 /> dude the protective bend in the tube . <br /> ( D) = S3 ` , <br /> Distance from the 7150 inlet tube flange to the top and i <br /> bottom of lower tube, valve length . ! <br /> (w) = 13a ( D ) <br /> Upper <br /> Tube <br /> Distance from the 7150 inlet tube flange to the bottom _ 1 <br /> of the tank. Note: If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension `` <br /> v A <br /> his <br /> (OPW 6111 & 61 TP models add 0.6") <br /> { B) = 1 �i1. - — {�M Valve �t <br /> Length, f <br /> bottom U <br /> From the tank calibration chart provided by tank manu- of cut el <br /> facturer find the dipstick number (Y) which corresponds <br /> to the 100% volume . (g) <br /> ( y) = Ci 1r - - To Tank \\ <br /> 1 . To determine complete shut-off percentage : (Y}Tank <br /> Subtract upper tube length (D) from distance to tank (U) valve _ Chart <br /> bottom (B) 19 4T � Length, 100% y <br /> (X) _ (B ) — ( D) + 1 .5 = " J top of Volume 4 <br /> Dipstick <br /> Using the tank calibration chart provided by the tank t <br /> manufacturer determine the tank capacity at the cal- h <br /> culated (X) dimension and the 100% volume (Y ) tank :7 <br /> capacity. <br /> ( X) tank capacity in gallons = v <br /> ( Y) tank capacity in gallons = q7 <br /> Co plete SO% _ (X) capacity ! (Y) capacity xi 00 = <br /> �'L ro Note : The overfill valve must be installed per AHJ re- <br /> quirements and all applicable local, state, and national <br /> codes . If the overfill valve is set above the allowable <br /> shut-off percentage the overfill valve must be removed <br /> and replaced . <br /> =instaillation <br /> pendix only applies to valves installed per Appendix C . See Appendix B for the standard valve <br /> ank shut off level worksheet, <br /> 24 <br /> i <br /> I <br /> i <br />