Laserfiche WebLink
V 15, 1 �. <br />roes <br />Appendix A <br />71 SO Overfill Valve Initial Shut Off Level Upper Tube Calculation 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 />Desired tank capacity for shut-off: <br />Dipstick Number (Y) on Tank Chart that corresponds to 100°/% volume = <br />Dipstick Number on Tank Chart that corresponds to SO% (X) _ <br />Upper Tube Reference Number Z=Y-X <br />Upper Tube Depth Inside Tank C = Z-2" <br />Distance from top sealing surface for 7150 Lip' to inside the <br />top of Storage Tank' <br />For Non -Testable 71 SO models only <br />SO%= <br />12 (Y) <br />p8 (X) <br />14.'x.,4 1 (Z) <br />2 <br />(C) <br />A= 53•S <br />In all cases for non -testable 71 SO models, the top of the valve body must protrude at least 6'/2" into the tank to <br />provide a minimal clearance for proper operation.' Additionally the total Upper Tube Length must beat least 16" <br />of length to include the protective bend in the tube. <br />Is C less than 6'/z" <br />If NO, Upper Tube Length (D)= C + A <br />If YES, Upper Tube Length (D)= 6'/2 "+ A <br />Yes / 61 <br />Upper Tube Length = � d - -7S <br />For Testable 71 SO models only <br />In all cases for Testable 71 SO models, the top of the valve body must protrude at least 6'/z" into the tank to provide <br />a minimal clearance for proper operation.' Additionally the total Upper Tube Length must beat least 14'/2" of <br />length to include the protective bend in the tube. <br />Is C less than 6 1/2" Yes / No <br />If NO, Upper Tube Length (D)= C + A -1 1/2 " <br />If YES, Upper Tube Length (D) = 61/2" + A- 1 1/2 " <br />Upper Tube Length = <br />' Sealing surface maybe the top of the pace Seal Adaptor, the built in sealing ledge inside some spill containers, or on non - <br />vapor tight applications the top of the pipe nipple <br />2 Some Underground Storage tanks utilize a man way system at the top. Make sure to use the top of the storage tank for <br />measurementandnottotopofthemanway. Consultyour underground tank manufacturer for height of the man way <br />3 This measurement is taken from the seam where the upper tube is attached to the valve body to the inside of the tank top. <br />ov((u l I - I �6- 5 21 <br />