Laserfiche WebLink
J•r' rksheet t• r OP4Aj r 1501 a-c <br /> "I"11 817 <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(AH1)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 7150 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 /> - <br /> ID)— <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of low r be,valve length. (D) i <br /> (W)_ Upper I <br /> (u) Tube l <br /> Distance from the 71 SQ 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 61161 models add 0.6") (W)valve <br /> 117 <br /> 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. <br /> (Y)_ U C) To Tank <br /> I <br /> 1. To determine shut-off percentage: i Tank <br /> Subtract upper tube length(D)from distance to tank (U)Valve Chart <br /> bottom(B) Length, 100% <br /> (X}=(B)-(D)-2"=_ 1� [) top of cut volume <br /> . t- <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= _`1 30 <br /> (Y)tank capacity in gallons <br /> SO%=(X)capacity/(Y)capacity x100 <br /> Note: The overfill valve must be installed per AH1 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 nwst 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 />