FFS-1072 Forecourt Guide 2025 2 - Flipbook - Page 24
DEFENDER SERIES® BELOW GRADE SPILL CONTAINER:
TO R Q U E S P E C I F I C AT I O N S
LOCATION
FT-LBS / N-M
Spill container to UST riser pipe
125-150 / 170-203
Swivel adapter to pipe nipple
75-100 / 102-136
I N S TA L L AT I O N D E P T H P R E PA R AT I O N : N E W S I T E A P P L I C AT I O N
1. Lay string line or straight edge across the tank riser at finished grade height.
2. Cut the riser pipe so that the top edge will be 17-19" (430-480 mm) from finished grade. The
actual height (elevated grade) of the bucket will be 1.0" (25.4 mm) above finished grade to
ensure proper water run-off (sloped dome).
NOTE: Cut the riser pipe square/perpendicular to endure a flat sealing surface.
R E T R O F I T A P P L I C AT I O N
1. Remove an appropriate size section of concrete around the existing spill container.
The minimum recommended size is a 36" (914 mm) square around each spill container.
2. Remove existing spill container.
3. Excavate a 24" (610 mm) diameter by 24" (610 mm) deep (measured from top of riser)
around the riser pipe.
4. Check the height of the riser pipe compared to finished grade level. Lay a straight edge across
the excavated area and measure from grade to the top of the riser pipe. The riser pipe must be
between 17 - 19" (430 - 480 mm) below grade.
5. If the riser pipe is too long, it must be re-cut or replaced to obtain appropriate length.
