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(AIQ 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} (X) <br /> Upper Tube Reference Number Z=Y-X D (Z) <br /> Upper Tube Depth Inside Tank C=Z-2'. <br /> Distance from top sealing surface for 71 SO Lip' to inside the 0 (C) <br /> top of Storage Tank' A= <br /> For Non-testable 7150 rnodeis only <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.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 61/2" Yes 1 No <br /> If NO,Upper Tube Length(D)=C+A <br /> If YES,Upper Tube Length(D)=6112"+A <br /> Upper Tube Length <br /> For? O ra!gdels only <br /> In all cases for Testable 7150 models,the top of the valve body must protrude at least 6'12"into the tank to provide <br /> a minimal clearance for proper operation.3 Additionally the total Upper Tube Length must beat least 141/2"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(D)=C+A-- 1 1/2" <br /> If YES,Upper Tube Length(D)=61/20+A- 1 1/z" <br /> Upper Tube Length= <br /> ' Sealing surface may be the top of the Face Seal Adaptor,the built in sealing ledge inside some spill contalners,or on non-vapor <br /> tight applications the top of the pipe nipple <br /> 2 Some Underground Storage tanks utilize a manway system at the top. Make sure to use the top of the storage tank lbrmeasure- <br /> ment and not to top of the manway. Consultyourunderground tank manufacturer for height of the manway <br /> ' This measurement is taken from the seam where the upper tube is attached to the valve body to the Inside of rhe tank top. <br /> 19 <br />