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Introdudng . . . The 98 LD®2000* Mechanical Line Leak Detection Don't let the exterior deceive you! What you see is not what you have been getting! Beneath this familiar exterior is the greatest improvement in mechanical line leak detection since 1990—the yearVaporless Manufacturing, Inc. integrated a line check valve/pressure relief into the body of a mechanical line leak detector and pioneered the single piston design in the original LD-2000. The 98 LD-2000 significantly raises the performance standard by which all future mechanical leak detectors will be judged.The 98 LD-2000 is upgradable to line leak detection with thresholds of .2 GPH monthly and .1 GPH annual line leak detection standards, using theVapoAess PLC-5000•interface. Years of field use have proven the LD-2000/96 LD-2000 series of leak.. detectors to be the most effective mechanical leak detectors to: (a) overcome. thermal contraction, (b) provide the longest field performance, averaging 4+. . years (and growing) mean time to failure, functioning within EPA 3 GPH @ 10 psi leak threshold, (c) reduce pump service calls due to failed submersible check valvefailure, (d) to provide the best guarantee** for leak detectors available. The 98 LD-2000 exceeds the performance of all previous LD-2000 models. Unlike anything available from any other manufacturer of mechanical leak detectors, the 98 LD-2000: 1. Drastically reduces the piston size of the leak detector. In fact,this new series of leak detectors has 78% less surface area than competitive equipment. 2. Eliminates the traditional fuel flow path to the piston(which controls leak sense-full flow performance).This allows the leak detector metering system better isolation from the turbulence and hydraulic effects found in the pump head during pump startup.This fuel flow change also eliminates the mechanical and thermal.effects present in the upper half of the pump, allowing the leak detector to only respond to line pressure changes.