Products

Mechanical Line Leak Detector

For use with 4” STPs, the MLD product line is precision built, with unique construction features that provide busy stations with maximum flow rates and long service life. The MLD is offered in two models to match your exact application, ensuring accurate, nuisance-free operation critical to profitable station operation.





SPECIFICATIONS:

Two models: STP-MLD (blue) for gasoline and STP-MLD-D (tan) for diesel.
• Solid brass piston has 41.3mm of travel to move the leak detection poppet fully out of the flow, offering minimum flow restriction and maximum flow rates.
• Burnished brass cylinder liner and polished stainless steel piston rod ensure smooth operation and long life from the Teflon seal.
• Thermal compensation chamber of 94.2 cubic centimeters helps minimise thermal contraction nuisance tripping.

Liquid Compatibility

Max. liquid viscosity: 70 SSU at 60°F (15°C).
• STP-MLD models are compatible with fuel mixtures containing up to 10% ethanol with gasoline, and 20% MTBE, 20% ETBE or 17% TAME with gasoline, as well as diesel fuels, fuel oils, kerosene, Avgas and jet fuels.
• STP-MLD-D models are listed for diesel fuels or kerosene only.

APPROVALS

Third party certified to comply with US EPA requirements 280.41 (B) and 280.44 (A) for continuous monitoring of pressurised piping.
• Consult factory for other applicable approvals.

QUALITY CERTIFICATION

Franklin Fueling Systems is an ISO 9001 Certified Manufacturer.

ADVANTAGES

All models are capable of detecting line leaks equivalent to 11.4 lph at 0.68 bar when installed properly with the appropriate fuels. All models will signal detection of leaks by restricting product delivery to less than 11.4 lpm and taking more than 4 seconds to open.
• All models require 2 to 3 seconds to make a line test when no line leaks exist and air is purged from piping between the discharge of the MLD and the dispenser solenoid.
• All models will remain in the “open” position during product delivery to manifold, with discharge pressures as low as 0.069 bar. All models will reset to “tripped” when line pressure delay is below 0.207 bar with pump off.
• All models will detect leaks up to 3.04m above the MLD installation point.

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