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Smaller Volume / Faster Response Piston Size <br /> With a reduced piston size, there is one-fourth the volume to replace when in leak search and one-fourth the <br /> volume to return to the line when the pump turns off. This combination makes for a more responsive and <br /> faster leak detector.Less volume to leave the line for the leak detector to reset and catch leaks. Less volume <br /> to fill and provide full flow for dispensing! <br /> Superior Flex-Pipe Performance <br /> The reduced surface area of the piston significantly reduces the surface area exposed to hydraulic line <br /> shock. This results in enhanced performance with steel and fiberglass pipe, and especially with today's <br /> flexible pipe. <br /> 99 L -2000\ <br /> In the early 1990's,the first commercially successful flexible pipe,Total Containment PP-1500,was introduced <br /> to the U. S. petroleum industry. Due to the flexibility of this pipe system, no line leak detection would work. <br /> In 1992, the VMI LD-2000\E was certified for 3 GPH @ 10 psi on Total Containment PP-1500 pipe. The <br /> 99 LD-2000\E is still required for existing PP-1500 pipe. Additionally, today the 99 LD-2000\E is used in <br /> sites that have the same line characteristics as the LD-2000\E was originally certified for, even though the <br /> pipe is different. The original certification of the LD-2000\E concerned the bleed-back modulus of PP- <br /> 1500 pipe. Today, lines with high bleed-back (generally above 600 ml.) and high head pressure may <br /> require the 99 LD-2000\E to pass a field test for annual certification. Consult with factory before ordering <br /> and installing the 99 LD-2000\E. <br /> Compatible i , <br /> The 99 LD-2000 is compatible with the ARM-4073, ISM-4080 and ISM-4081. The ARM and ISM modules <br /> are able to eliminate thermal inducted slow flow at a site. The ISM modules will provide submersible shutdown <br /> at the detection of a leak and site monitoring interface or alarm notification. Read about the benefits of these <br /> devices on our web site, request a product brochure or talk to one of our sales staff. <br /> Shortest Leak Detector Profile <br /> The 99 series leak detectors are the lowest profile leak detectors available today. <br /> 5.000 <br />