COMPLIANCE INFO_1999-2007 - Laserfiche WebLink

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• The MLD -D (light tan in for) is designed for use in diesel fuel and kerosene applications. • The MLD -E (gray in color) is designed for use with some flexible piping systems with a high modulus of elasticity. * Always follow MLD installation instructions in flexible piping systems to determine if model MLD -E (gray) or the standard MLD (blue) model is required to detect a 3 GPH line leak. pnm- ? of 3 SPECIFICATIONS: • Capable of detecting 3 GPH line leaks at 10 psi (11.4 LPH at .68 bar). • Once in the open position, MLD remains open during product delivery to pressures as low as 1 psi. Therefore, the MLD will never close when several nozzles are open at the same time. • 3rd party certified to comply with US EPA requirements 280.41 (B) and 280.44 (A) for continuous monitoring of pressurized piping. • UL listed for installation in all 4" FE Petro pumps and most competitive makes. • Compatible with all blends of motor fuels including alcohol blends from 0 to 100% ethanol or methanol, 20% MTBE or ETBE with 80% gasoline, or 17% TAME with 83% gasoline as well as diesel fuels. • MLD signals a line leak by allowing less than 3 GPM (11 .4 LPM) restricted flow rate, at leak sizes of 3 GPH or greater. Leaks of less than 3 GPH are indicated by the leak detector taking longer than 2 to 3 seconds to open. • Time required to make a line test is 2 to 3 seconds when no line leaks exist and air is purged from piping. • Maximum static head on MLD is 12 feet (3.35 m) from tank to dispensing point. • Weight: 9.2 pounds (4.2 kg). • Minimum height requirement from 2" NPT port to manhole cover for clearance is 9" (22.9 cm). The FE Petro STP -MLD leak detector is a three position, pressure -sensing, piston operated valve designed to continuously monitor the piping by indicating any leakage in the piping between the discharge and the submersible pump and the solenoid valve in a service station dispenser. When the submerged pump is turned on after the system pressure has dropped significantly below the normal static system pressure, three GPH (at 10 psi) is metered through the STP - MLD into the piping system. If a leak is present that equals or exceeds this amount, as much product escapes from the system as is metered through the STP -MLD. Under this condition, pressure cannot build up in the piping system. When a nozzle is opened, a poppet in the STP -MLD moves to a position that restricts the flow to 2 GPM. This is the indication to the operator that a leak is present. If there are no leaks, pressure rapidly builds in the system forcing the STP -MLD to open to the full -flow position. In a system with no leaks, it takes approximately three seconds for a complete test. No further line testing takes place until the line pressure drops significantly below the normal static system pressure. 1. The Tripped or Bottom 2. Leak Sensing Position 3. Non -Leak or Full Flow Position Position 8/26/2004