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VMI 99 LD-2000 Leak Detector In addition to the submersible pump problems encountered without an in-line check valve, the metering portion of the leak detector is hammered by hydraulic shock.This results in many leaks going undetected. Those leak detectors are just not equipped for the job you purchased them for. The 99 LD-2000 is the answer you have been looking for. VMI leak detectors, with an integrated check valve and pressure relief valve, will save money, reduce customer frustration at the dispenser and reduce service calls. The 99 LD-2000 Has A Higher Level Of Performance Over A Broader Range Of Burial Depth, Line Length, And Piping System Types Than Any Other Leak Detector Additional Features • Over 20% increased flow capacity • Guaranteed for 24 months from date of installation to detect 3 GPH @ 10 PSI leak • One-Way Poppet Flow path • Reverse Ratio Piston / Poppet combination • Smaller Volume - Faster Response piston size • Shortest profile leak detector available for the "tight" installations • All fuels (gasoline - diesel - alcohol) • All pipelines (flexible - fiberglass - steel) up to 400 ml. resiliency • Exceeds EPA regulations (3 GPH @ 10 PSI) • Detects leaks up to 10' above the leak detector • Installs with 2" six point socket or pipe wrench Increased Flow Capacity The 99 LD-2000 has maximized the flow and flow path in existing, older submersible pump heads.This new design allows over 20% more flow than previous LD-2000 models, maximizing pump performance for earlier pump heads. Longest Guarantee The 99 LD-2000 shares the longest guarantee available in the industry, along with all other VMI 99 LD-2000 series leak detectors. For 24 months from date of installation, the LD-2000 is guaranteed to see a 3 GPH leak @ 10 PSI. One-Way Poppet Flow Path The One-Way Poppet Flow Path isolates pump turbulence from line leak detection at pump startup. The hardened stainless steel poppet does not dimensionally change because of thermal conditions encountered during station operation (precision metering change is insignificant down to -20° F). Reverse Ration Piston / Poppet Combination Reverse Ratio means the leak detector has a smaller diameter piston area (smaller than the poppet it is attached to).This smaller piston area keeps the leak detector in the fast fill position (3 GPM) to a higher line pressure while compressing vapor pockets and expanding flexible pipes faster. This means less time to full flow.The leak detector does not have to completely reset (as with competitive leak detectors) for the poppet to be forced into the reset mode at pump startup.