Laserfiche WebLink
Appendix A <br /> 71 SO Overfill Valve 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; SO%= <br /> Dipstick Number on Tank Chart that corresponds to 100% volume (Y) _ � (y) <br /> Dipstick Number on Tank Chart that corresponds to SO% (X) _ C"T� (X) <br /> Upper Tube Reference Number Z=Y-X ��� <br /> 2 <br /> Upper Tube Depth Inside Tank C = Z-2", C� (C) <br /> Distance from top sealing surface for 7150 Lip' to inside the <br /> top of Storage Tank2 A^ <br /> For on-Testable 71 SO modeis only <br /> In all cases for non-testable 71 SO models, the top of the valve body must protrude at least 61/2" into the tank to <br /> provide a minimal clearance for proper operation.3 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 61/z" Yes / No <br /> If NO, Upper Tube Length (D)= C + A <br /> If YDS, UpperTube Length (D)= 61/2 "+ A <br /> Upper Tube Length <br /> For Testable 7 'ISO models only <br /> In all cases for Testabl 71 SO models, the top of the valve body must protrude at least 61/z" into the tank to provide <br /> a minimal clearance for proper operation.3 Additionally the total Upper Tube Length must beat least 141W of <br /> length to include the protective bend in the tube. <br /> Is C less than 5" Yes / No <br /> If NO, Upper Tube Length (p)= C + A - 1 1/2 " <br /> if YES, Upper Tube Length (D) = 6 '/z" + A 1 1/z " <br /> Upper Tube Length = <br /> ' Sealing surface may be the top of the Face SealAdapto, the built in sealing ledge Inside some spill containers, or on non-vapor <br /> tight applications the top of the pipe nipple <br /> 7 Some Underground Storage tanks utilize a manway system at the top. Make sure to use the top of the storage tank formeasure- <br /> ment and not to top of the manway. Consultyour underground tank manufacturer forheightof the manway <br /> ' This measurement is taken from the seam where the upper tube is attached to the valve body to the inside ofthe tank top. <br /> 19 <br />