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•„ • •111111111 1 11 TroTt <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 />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 />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 />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 />The 99 series leak detectors are the lowest profile leak detectors available today. <br />