2025 EN Catalog-Interactive - Flipbook - Page 131
DEFENDER SERIES®
OVERFILL PREVENTION
VALVE (OPV)
The Defender Series® overfill prevention valve (OPV)
prevents the overfill of an underground storage tank during
a gravity-fed product delivery. It employs a revolutionary
magnetically-coupled actuator system to provide positive
shutoff. This unique method of shutoff eliminates any
penetrations in the valve, making it both vapour and leak
tight. The Defender Series® OPV provides safe, rapid, and
reliable fuel drops with simple installation, service, and
remote testing capability.
HIGHLIGHTS
• Magnetic coupler actuates the interior primary flapper
assembly and secondary shut-off valve when the float rises
outside of the valve, eliminating valve body penetrations
and any potential product or vapour leak points.
SPECIFICATIONS
Approvals &
Certifications
-
ULc listed
ATEX approved
FN/KIWA certified
• After cutting to length in the field, the upper drop tube
Dimensions
SERVICE STATION
HARDWARE
is roll-crimped onto a top adapter outfitted with two
O-rings and then threaded onto the top of the valve body,
eliminating the need for drilling, rivets, epoxy, and
flaring tools.
3.97"
(101 mm)
• Bottom drop tube is cut in the field and threaded onto the
bottom of the valve ensuring straight installation.
1.75"
(44.5 mm)
• The roll-crimp/thread method of installing drop tubes
95%
Shutoff
Level
ensures proper alignment of the drop tubes with the rest
of the OPV assembly, making installation and removal of
the entire assembly smooth.
• Damaged drop tubes can be easily replaced instead of
having to purchase an entire new assembly.
• Fully compatible with gas, gas/alcohol blends, diesel,
and biodiesel.
• Compatible with industry standard 4" drop tubes allowing
17.40"
(442 mm)
18.40"
(467 mm)
retrofit into existing installations.
• The entire OPV assembly remains within the 4" inner
diameter of the riser preventing interference with other
tank components and also allowing removal even while
the tank is full.
• Actuates in both low and high flow applications and
functions within a broad range of flow rates from 25 gpm
to 370 gpm (95 lpm to 1,400 lpm).
• The remote testing tool allows for remote testing of the
primary functionality without having to remove the OPV
from the rise.
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