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Tanknology OPW Ball Float Inspection Reference Material <br /> The 30MV series is designed to meet EPA's requirement to notify the delivery driver of an overfill 30 minutes prior <br /> to the overfill occuring. <br /> The 30MV will have a 1/16 inch breather hole. <br /> The 53V series is designed to alert the driver of an overfill by restricting flow when the tank reaches 90% of the <br /> liquid capacity.The 53V will have a 118 inch breather hole. <br /> Specifying the Proper Length 53V Ball Float <br /> • Step 1: <br /> Determine Dimension"X": Consult the tank chart(provided by the tank manufacturer)to determine the distance that <br /> corresponds to 10% of the total tank capacity <br /> • Step 2: <br /> Determine Dimension"Y": Measure the dimension from the inside top of the tank to the top of the 4"threaded tank <br /> "bung"fitting. <br /> • Step 3: <br /> Add measurements"X"and"Y". Then subtract 1/4"and round up to the nearest length ball float. <br /> Specifying the Proper Length 30MV Ball Float <br /> • Step 1: <br /> Determine Dimension X': Consult the tank chart(provided by the tank manufacturer)to determine the distance that <br /> corresponds to 308 gallons. <br /> • Step 2: <br /> Determine Dimension"Y": Measure the dimension from the inside top of the tank to the top of the 4"threaded tank <br /> "bung"fitting. <br /> • Step 3: <br /> Add measurements"X"and"Y". Then subtract 1/4"and round up to the nearest length ball float. <br /> OPW 30 mxtute <br /> wamm0 valves wiD <br /> have a 1116 inch <br /> breather hole <br /> Tank Manway Mounted Extractor Tank Top Mounted Extractor <br /> OPW 1-2100-M-_ 4'I WIN 1.21 D0-fVR <br /> Spill r,*.W er I1 Spill C*40"f <br /> OPW 90%full valves will <br /> have a 1/8 incn bre&, <br /> r vole <br /> OPWIMTVa66r' OPW 1711T VaDw <br /> RKOr"CAP Recovery Cap <br /> OPWa6D Oatlss, OPW202 Setift OPW6IVSj61020.EVR <br /> OPW 1611 S!A!a' •Paas 6sal Ad Vw Emew flan0� <br /> Vapor P!tlsery \ V+POr Raeos.ry AGslbr <br /> A4.9W, .OPW 2326lrlek <br /> - .— lalraetp IMIar6 '\ ti OM 400 3"i., <br /> -�� <br /> -OPW S3VN a 70MV, 1 I OPW 53VY a 30MV, <br /> B.VI F1lM VdH V6M! 1 ByI hloal Ym[VaNe �_-=4 <br />