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IMPORTANT: The instructions below for the 71 SO upper Tube Length = C + (A) overfill Prevention Valve are written for the initial to shutoff For testable models only, ending in "T"r stage shutoff at 9s% but can be a'Please cont c't the Au- U peer lube Length = C + (A) `" I -'1 /2" at any desired tank Capacity. thorny Having Jurisdiction (AHA and review local, YES Upper tube length is fr712" plus the riser pipe state, and national codes to deregulate- measurement {A). ments governing shut-off capacity ria your ry require = 6-712" region, re well ras take into account other considers- Upper Tube Length + {A) th tions such as extreme tank tilt. in all cases, the up- per tube must protrude into the tank at least 6 712"Into the For testable models only, ending i 1 /2" I to ensure that the valve can shut pow k is wetted Upper Tube Length = 6 1 l2r• + tA} - tank complete before the tap . as per EPA requirements. NOTE: You must find the actual tank capacity num gSlT1ON OF THE 71 SO AT bei that correlates t0 the G-112" + tAl depth for the HOW To LOCATE THE P station records. This number may also 1 used for 95% TANK CAPACITY the purposes of calibrating an electronic tank level (Shu f-o#f points can be adjusted to say raparTtY to system* comply with ANJ Reydfrements) Tape measure r tube and the placement of the The length of the upper 71 SO valve body determine the shut-off point. Follow- ing the standard instructions for the OPW 7150 will pro- vide for initial shutoff at 9590. In all cases, the upper tube length must be a minimum of 6- 112" plus the length of the riser pipe- All length measurements are in A nches. Riser Pipe {A) With pace INSTRUCTIONS Seal Adaptor To Tank (g) Top I .D.) To Tank 1 ) Find tank capacity (in gallons) from tank calibration so om chart provided by tank manufacturer. 2) Calculate 95% Of capacity 3) Locate the 95% volume number on the tank calibra- tion chart. 4) Find the dipstick number (X) which corresponds to the 95`ifo tangy volumew correspond sto the 100% volume. Figure ' ber (Y) whit EXAMPLE 5) subtract the dipstick numbetube reference hetank dl�number ameter (1') to find the upper1 ) For an Own s�Corning Model Cr3 Fiberglass° Tank art (z} Calibration Tank Capacity - I Q,Qoo gal „ nomia 9A03 gal, (Y) _ ()() _ (Z) NOSE: use Actual capA Y only Subtract 2" from (Z) to find the upper tube depth 2) 95% of actual tank capacity = 0.95 x 9403 gat. _ 6) (C) . 8933 gal . (Z) _ 2.. = C 3) The closest number which is stns than 8933 gal , Is 8910 gall Choosing the closest number cess than 7 ) is C less than 6-1 /2"? 95% of actual capacity ensures that the initial from shutoff will occur when the tank is no more than NO Upper tube length is C plus the distance 95% full . 1& rear in9 of 8914 gal corre- the top of the Face Seal Adaptor installed on �m uret�he4 'o $2 3 the riser pipe to the inside, top lip of the storage 4) The calibrti sponds to , tank (A) . SEP ? O � f l NVIR0 �IRITFtiITA (,r , . � r:a ,n � i