COMPLIANCE INFO 2001-2006 - Laserfiche WebLink

Home Browse Search

SEP-26-2006 13:29 Serl•'^e Station Systems 408 938 8888 P.05 •Once in the open position, MLD remains open during product delivery to pressures as low as 1 psi.Therefore,the MLD will not close when several nozzles are open at the same time. •3rd parry 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,fuel oil, avgas,jet fuel, and kerosene. •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 approximately 10 feet (3.28m)from MLD to the highest point in the piping system. •Weight: 9.2 pounds (4.2 kg). •Minimum height requirement from 2" NPT port to manhole cover for clearance is 9" (22.9 cm). Maximum product viscosity is 70 SSU at 60° F(15.60 G). OPERATING CHARACTERISTICS. 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 1 :ins... http://www.fepetro.com/english/ML.D.HTML 9/26/06