Laserfiche WebLink
'r^a - I I" • fir`( :` 'r "r slid RECENED <br /> 0<1 MAY 0 6 2019 <br /> Appendix A <br /> 71 SO Overfill valve Upper Tube calculation WorksheetENVI RON MENTAL <br /> HEALTH <br /> l FPARTMENT <br /> important : This is meant to be supplemental worksheet and not a substitute to following t e 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: SO%= <br /> Dipstick Number on Tank Chart that corresponds to 100% volume (Y) _ ' ' a (Z') <br /> Dipstick Number on Tank Chart that corresponds to SO% (X) _ ' (X) <br /> Upper Tube Reference Number Z=M / ' (Z) <br /> /J 2 <br /> Upper Tube Depth Inside Tank C = Z-2" <br /> Distance from top sealing surface for 71 SO Lip ' to inside the <br /> top of Storage Tank' //A= r <br /> For Non -Testable 71 SO models only <br /> In all cases for non-testable 71 SO models, the top of the valve body must produde at least 6 '/2" into the tankto <br /> provide a minimal clearance for proper operations Additionally the total per Tube Length must be at least 16 " <br /> of length to include the protective bend in the tube . <br /> Is C less than 61/2" Yes No ,> <br /> If NO, Upper Tube Length ( D) = C + A <br /> If YES, Upper Tube Length ( D) = 6 '/z "+ A <br /> Upper T e Length = <br /> For Testable 71 SO models only <br /> In all cases for Testable 71 SO models, the top oft tonally <br /> e valve body must protrude at least 6 Yz" into the tank to provide <br /> a minimal clearance for proper operation .' Ad* the total Upper Tube Length must beat least 141/2" of <br /> length to include the protective bend in the t e . �.--� <br /> is C less than S " Yes le �i <br /> If NO, Upper Tube Length ( D) = C + A 11/2 " <br /> If YES, Upper Tube Length ( D ) = 61/ ' + A - 1 1/2 " <br /> Upper Tube Length = <br /> Sealing surface maybe the to of the Face Seal Adaptor, the built in sealing ledge inside some spill containers, or on non- <br /> vapor tight applications the t p of the pipe nipple <br /> Some Underground Storagtanks utilize a manwaysystem at the top. Make sure to use the top of the storage tank for <br /> measurement and not tot Aofthemanway. Consultyour underground tank manufacturer for height of the manway <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 /> � 20 <br /> r <br />