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IMPORTANT: The instructions below for the 7150 <br />Overfill Prevention Valve an forth. initiel <br />stage shistoff at 95% but con be adjusted to shutoff <br />at any desired tank capacity. Meese tomMct the Au- <br />thority Having Jurisclictien IAN.) and review local. <br />state, and national cedes to determine the regulato- <br />ry requirements goverrding shut-off capacity in your <br />region, as well as take into account other conskiera- <br />dons Mich as extreme tank tilt. l all Gases, the up- <br />per tubs must prcnrudes Into the tank at *act 6 1/2' <br />to ertnare that the valve can shut edition Into the <br />tank completely beton, the top of the tank a wetted <br />as per EPA requirement'. <br />HOW TO LOCATE THE POSITION OF THE 7150 AT <br />OS% TANK CAPACITY <br />iShmt -crtf points ow/ be odjustot ro ObY CapeCtr to <br />Ctmlpty with MU thweirertverttO <br />The length of the upper tube and the placement °I the <br />71 SO valve body detei mine the shut-off point Follow- <br />ing the siandard lersk ructions for the DPW 7150 will pro- <br />vide for intal shutoff at 95%. In all cases, the upper <br />tube length must be a minimum of 6-1 /2" plus the <br />length of the riser pipe. Al? length measurements are In <br />inches. <br />iaisTaucnotas <br />I) FInd tank capacity (n ga1/0ns; from tank cbration <br />hart provided by tank manufaccuter. <br />Calculate 95% of riapauty <br />Locate the 95% volume number on the tank caiibra- <br />lion chart. <br />Fine the dipstk* number (X) which corresporeS to <br />the 95% tank valuer*. And, fine the dipstick rim- <br />her(Y) which corlesponds w the 10(3% voiume. <br />S) 5ubtract the dipstick number (X) from the tank di- <br />ameter (Y) to find the upper tube reference number <br />rn-Ocj Zi .= <br />Subtract 2" from (Z)tO find the upper tube depth <br />(C). <br />(Z) - — C <br />ts tess than 6-1/2'7 <br />NO Upper tube length is C plus the distance from <br />the top of the Face Seal Adaptor installed on <br />the riser pipe to the inside, top lip of the storage <br />tank (A). <br />Upper Tube Length = C (Al <br />[For testable models only, ending in <br />Upper Tube kength = C + iill - 1-112" <br />YES Upper tube length is 6-1/r pkis the riser pipe <br />measurement (A). <br />Upper Tube Length = 6-1/2' + (A) <br />For testable Models only, ending tri 1"r: <br />LUppigt Tube Let_21 - <br />NOM You must And the actual tank capadtv /lum- <br />ber that correlates to the 6 1/Z" + (00 depth for the <br />station records. This number may else be used for <br />die purporos of calibrating an electronic unit low/ <br />system. <br />Figure 7 <br />EXAMPLE <br />For an Owens-CornIng Model 6-3 Fibergliarss" -lank <br />Calibration Chart <br />Tank Capacity - 10,000 gals, nominal 9,403 gal <br />NOM Ulm actuat capacity oily <br />95% of actual tank capatIty = 0.95 x 9403 gal. = <br />8933 g2J. <br />The closest number which is Jess than 8933 gal. Is <br />891D gal. Choosing the closest number less than <br />95% Of actual capacity ensures that the Initial <br />5hutciffwIl occur when the tank lnoffiore than <br />95% full_ <br />The calibration chart reading of 8910 gel. corre- <br />spond!, Lo a dipstick measurement of 82'. <br />4