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System Installations <br />The HASSTECH system is certified <br />for both belowground and <br />aboveground tank installations. <br />A single 2" vapor line from all <br />dispensers collects vapors and <br />sends them to the collection unit. <br />The collection unit has two <br />outlets, one to the process <br />unit and the other to the <br />storage tank. <br />The HASSTECH System burns all <br />those hydrocarbon vapors that <br />are in excess of the storage <br />The Electronic Control and Status Panel <br />tank's ability to hold it at zero <br />tank pressure. The Marketer <br />benefits from the fact that no <br />fresh air is admitted to the <br />storage tanks, so evaporative <br />losses are stopped. Tests indicate <br />that depending on the time of <br />