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W.O.# NW1-2348303 <br />Cil CjitV- u,, <br />'wzzf <br />A"g8, ix R <br />Cust Ref# : COCO-0015345128 <br />7ISO overfill valve in Tank Shut off Level Worksheet <br />LMPPjlpnt_ 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 Haying Jurisdic- <br />tion (AHA and review local, state, and national codes to determine the regulatory requirements governing <br />L •m accoi,nr other considerations such as extreme tank tlh. <br />shut-off capacity In your region, as Welk as to e o <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 />I u g in the 7150 body (see figures), upper tube length. <br />[dote: the Upper Tube Length must be at least 16" to <br />include the protective bend in the tube. <br />(D) = <br />Distance from the 7150 inlet tube flange to the top and <br />bottom of lover tube, valve length. <br />W <br />(u1=— <br />Distance from the 71 SO inlet tube flange to the bottom <br />of the tank. !Nate: 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) <br />(B) = 0L _ _ <br />From the tank calibration chart provided by tank manu- <br />facturer find the dipstick number (Y) which corresponds <br />to the 1f�valume L I <br />(Y) <br />1. To determine shut-off percentage: <br />Subtract upper tube length (I]) from dIstanceto tank <br />bottom (B) <br />(X) = (8) - (D) - 2' <br />using the tank caiibrat] on 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 />-pacity. <br />S/ <br />(X) tank capacity In gallons = �JU <br />(Y) tank capacity in gallons <br />SO%= M capacity / M capacity x1 UO <br />(D) <br />Upper <br />Tube <br />I <br />(W)'Valve <br />Length, <br />bottom of <br />cut <br />r <br />(B) <br />To Tank <br />i m <br />Tan k <br />(ul valve Chart <br />Length, 100% Vol - <br />top of cut ume glp- <br />stick <br />i <br />yl r <br />NOW: The overfill valve mus[ be Installed per AM 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 overfliI <br />valves should be set to a maximum of 95%. <br />20 <br />Apendix b <br />