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Agpenclix 13 <br /> 7150 Overfill Valve in Tank Shut off level Worksheet 1 <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(AHA 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 UpperTube Length must be at least 16"to in- <br /> clude the protective bend In the tube. <br /> M.- <br /> Distance <br /> p}=Distance from the 7150 inlet tube flange to the top and <br /> bottom f lower tube, <br /> e,valve length. <br /> (W)_ (p) <br /> Upper <br /> (U)a Tube <br /> Distance from the 7150 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 1 &61 TP models add 0.6") (M Valve <br /> Length, <br /> bottom of <br /> From thetank calibration chart provided by tank manu- cut <br /> facturer find the dipstick number(1n which corresponds <br /> to the 10 volume. (8} <br /> {Y}= To Tank <br /> M <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(D)from distance to tank (U)Valve Chart <br /> bottom(B) Length„ i00% <br /> (X)=(B)-(D)-2"__ • Z 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. Q <br /> (X)tank capacity in gallons= <br /> (Y)tank capacity in gallons= <br /> SO%=(X)capacity 1(Y)capacity x100=��l <br /> Note: The overfill valve must be installed per AW 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 8 Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />