UL Catalog 2024-2025 - Flipbook - Page 261
GRADE LEVEL
TRANSITION SUMP
The AST® above or below ground transition sump is the
practical, environmentally sound solution for remote
dispensing from aboveground storage tanks. Steel and flexible
piping enter the sump through the APT® flexible entry boot.
Inside the sump, the steel piping easily connects to flexible
piping for a fuel-tight, continuous run to dispensers or an
intermediate sump.
HIGHLIGHTS
PIPING &
CONTAINMENT
• Transition sumps help meet environmental regulations by
isolating metal piping from the soil.
SPECIFICATIONS
30.00"
• Transition sumps can be installed either inside or outside
containment dikes.
• 30" burial depth allows the transition sump to be used as
the system low point for leak detection.
24.88"
• Load rated composite cover.
• The sump is a HDPE design.
• Flexible entry boot provides a fuel-tight and watertight seal
around the metal piping and flexible piping as it enters the
sump lid and sidewall.
• H-20 load rating. Pipe entries installed in lids negate the
load rating.
ORDERING INFORMATION
31.00"
Length
1.69"
Model
Description
AST-2922
Aboveground storage tank transition sump
99985553
Replacement gasket
25202923
Replacement AST-2922 lid, gray
IP-400-B
Inspection replacement port, FEB style with
replacement well cap
42615004
Replacement AST-2922 steel frame, black
23.00"
17.88"
30.00"
22.56"
24.00"
Width
261
