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EMCO `R Wilson, North Carolina 27893 Telephone: 252.243. 0150 WHEATON RETAIL Web: www. emcoretail . ctail . com A1100 Overfill Prevention Valve Calculation Sheet This calculation sheet is to document the dimensions needed for proper installation and should be used only with the instructions. This sheet assumes 95% maximum fill based on NFPA30 guidelines. Length measurements are in inches. Contact the local Authority Having Jurisdiction (AHJ) to determine all regulatory requirements regarding fill capacity. 1 . Tank Diameter is TD TD= _ 2 . Tank Capacity is TC TC= 3 . Desired Shutoff Percentage ( Note NFPA Guidelines) SO %= 4 , Shutoff Tank Capacity TC@ shutoff % = TC x 0 . 95 5 . Tank Level from Stick Chart for Shutoff Capacity (95%) TL@95% 6 . Tank " B" Dimension B = TD - TL@95% B= 7 . Distance from top seal surface ( 1 ) to the top ( inside) of the tank (2 ) is A A= 8 . Length of OPV top tube to (95% mark) on the A1100 is C - C = A+ B See Picture, Measure C distance from the 95% line on valve and cut top tube C = 9 . Distance from the top seal surface ( 1 ) to the tank bottom is D D = Tank Dia + A D = 10 , OPV Assembly Overall Length OAL = D-6 inches . Screw together top and bottom tube assemblies . Measure from top tube end and cut bottom tube either straight or 45 degree at operators preference . (See diagram to insure the 6" maximum clearance is maintained) OAL= PATENTS 5027870,55 us nrr 0 iz F; CII 1. The seating surface refers to the location of the OPV collar sealing point it maybe the riser pipe or the seal surface built in to some spill buckets. 2. If the tank uses a manway, be sure to use the tank top for measurement and not the top of the manway as shown in the diagram. Riser Pipe with Spill Containment Manhole Manway Style Tank F . . . , . RISER PIPE I CONTAINMENT MANHOLE MANWAY A RISER PIPE A A1100 VALVE ASSEMBLY VNOE{iCROUNO siORALE TANK i ' B gyp. DB D D a5f _ 45 6.0' MAX.