Laserfiche WebLink
Site: <br /> Appendix B Date: <br /> 7150 Overfill Valve in Tank Shut off Level Worksheet Tank ID Tester <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 /> 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 prot ctive bend e tube. <br /> (D)= Y3 <br /> 1A <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottoM of lower tub�_valve length. ' <br /> (W)= 1�_ / NO (D) <br /> (U)_ /SV Upper <br /> Tube <br /> Distance from the 71 SO inlet tube flange to the bottom <br /> of the tank. Note:If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension <br /> (OPW 61 11 &61 TP models add 0.6") (W)Valve <br /> (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 1000/ volume. (B) <br /> (Y)_ /(I ' j�r� To Tank <br /> (Y) P <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length (D)from distanc�to tank (U)Valve _ Chart <br /> bottom (B) / Length, 100% <br /> (X) _ (B)-(D)-2"=-1—�--- /'li top of cut 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 <br /> SO%_ (X)capacity/(Y)capacity x100 <br /> Note: The overfill valve must be installed per AM requife-�f <br /> ments and all applicable local,state,and national codes. If <br /> the overfill valve is set above the allowable shut-off perce rr <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 />