Laserfiche WebLink
Appendix B <br /> 7150 Overfill Valve in Tank Shut off Level Worksheet <br /> Imooctant This Is meant to be supplemental worksheet and not a substitute to followjng the installation <br /> manual instructions. All �measuirettiertts anZnc>'ies.�ase-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 71 SO inlet tube flange to the cast <br /> lug In the 71 SO body(see figures),upper tube length. <br /> Note: the Upper Tube Length must be at least 16"to in- <br /> clude the protective bend in the tube. <br /> (D)_ <br /> Distance from the 71SO Inlet tube flangeto the top and <br /> bottoml I er yt be,valve length, (D) <br /> (W) <br /> (U)= Upper <br /> Tube <br /> Distance from the 7150 inlet tube flan a the bottom <br /> of the tank. Note:If a tank do rot or is present It <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 &61TP models add 0.6") (W)Valve <br /> (g)— b Length, <br /> bottom of <br /> From the tank calibration chart provided by tank manu- cut <br /> facturer find the dipstick number(Y)which corresponds <br /> to the 100%volume. (g) <br /> (Y)= To Tank <br /> I. To determine shut-off percentage: (Y) <br /> Subtract upper tube length(D)from distance to tankTank <br /> (U)Valve Chart <br /> bottom(8) 3 Length, 100% <br /> (X)_(B)-(D)-2"= t�.� l top of cut <br /> Volume <br /> Dipstick <br /> Using the tank calibration chart provided by the tank — <br /> manufacturer determine the tank capacity at the cal- <br /> culated(X)dimension and the 100%volume(Y)tank <br /> capacity. <br /> (X)tank capacity in gallons <br /> (Y)tank capacity in gallons= 1 is <br /> S0%=(X)capacity/(Y)capacity x100= 0 <br /> Note:The overfill valve must be installed per AHJ require- <br /> ments and all applicable local,state,and national codes. If <br /> the overfill valve is set above the allowable shut-off percent- <br /> age the overfill valve must be removed and replaced. For <br /> reference 40 CFR part 280 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />