UL Catalog 2024-2025 - Flipbook - Page 65
SUBMERSIBLE
PUMPING SYSTEMS
HIGH CAPACITY LINE
LEAK DETECTOR
The High Capacity MLD product line is based on our standard
STP-MLD unit design. The High Capacity MLD’s compact
design allows installation in the same containment sump as the
submersible pump, greatly reducing the amount of unprotected
leak points between the submersible and the MLD.
HIGHLIGHTS
SPECIFICATIONS
Low Line Restriction
Line leak detection
Detects leaks of 3 gph (11.4 lph) or greater
at 10 psi (69 kpa)
US EPA
requirements
Third party evaluated to comply with US EPA
requirements 280.41 (B) and 280.44 (A) for
continuous monitoring of pressurized piping
systems with maximum of 396.60 gallons for
rigid pipelines, maximum of 95.5 gallons for
flexible pipelines, maximum of 492.10 gallons
for combination of rigid and flexible pipelines
Piston Design
Size
7¾" × 15" (197 mm × 381 mm)
Piston cylinder has 5¾ cubic inches (94.22 cc) of volume to
help minimize nuisance tripping due to thermal contraction
during cold weather.
Weight
28 pounds (12.7 kg)
MLD-HC
The MLD-HC will remain in the open flow position
with dynamic line pressure at 2 psi (13.8 kpa) at
the outlet
Maximum static
head pressure
Maximum static head pressure without affecting
operation is 12' (3.7 m) from MLD-HC to
dispensing point
Minimum height
Minimum height required from 3" (76.2 mm)
NPT port centerline for top clearance is 9½"
(241 mm). Not position sensitive. Can be installed
horizontally to reduce clearance to 3" (76.2 mm).
Motor fuels
- Compatible with all blends of motor fuels
including alcohol blends from 0 to 10% ethanol,
20% MTBE or ETBE with 80% gasoline, or 17%
TAME with 83% gasoline as well as diesel, fuel
oil, Avgas, jet fuel, or kerosene
- Two models available: STP-MLD-HC for
gasoline, STP-MLD- HCD for diesel
Approvals /
Certifications
- Consult factory for applicable approvals
- ISO 9001:2015 certified manufacturer
Piston design offers the maximum flow rate possible by
keeping flow restriction through the leak detector at an
absolute minimum. Piston has a full 1 7⁄8" (47.6 mm) of travel
to move the leak detector poppet fully out of the flow path
when product is being pumped.
Faster Installation
MLD-HC can be installed after purging air on new installations.
MLD-HC Seal
Threads seal using O-rings instead of thread sealant. This seal
design makes for simple installation and removal of MLD-HC
without large wrenches in the tight working environment of the
containment sump.
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