Laserfiche WebLink
T — 1 (87) Appendix B <br /> 71 SO Overfill Valve in Tank Shut off Level 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 /> 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 /> (Di= 56.25 L_, <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length. <br /> (W)= 163 (D) <br /> _ Upper <br /> (U) 161 Tube ,. <br /> �i <br /> r: <br /> Distance from the 7150 inlet tube flange to the bottom it <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 6111 &61TP models add 0.6") (W)Valve <br /> (B)= 165 Length, <br /> is <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. (B) <br /> M__21M67 To Tank <br /> i <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, 100% <br /> (X)_(g)—(D)-yr= 106.75 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- �1 <br /> culated(X)dimension and the 100%volume(Y)tank <br /> capacity. <br /> (X)tank capacity in gallons= 23559 <br /> (Y)tank capacity in gallons= 25067 _ ._ - . .. _ ._ . ._., ._._.. ._..... .. <br /> SO%=(X)capacity/(Y)capacity x100= 93.98% <br /> Nate: 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 /> Downloaded from www.Manualslib.com aruuivals search engine <br />