B-600-D-AB Walkover

Walkover-style DoubleWall Monitored Transition Sump

The B-600-D-AB “Walkover” style Transition Sump is meant to be installed adjacent to buildings or within pedestrian traffic areas. Designed for transitioning piping from above to below ground or vice versa, it consists of a structural steel frame sealed to a double-walled fiberglass sump. Read more

Due to its integrated water drainage channel under the cover it is ideal for areas with frequent rain or applications where water may occasionally flow over it. The walls have a compressive strength of over 1300 PSI and ship under a continuous vacuum test at 20”Hg or greater with a combination pressure/vacuum gauge factory-installed. Each sump also includes monitoring fluid. It is similar to the B-500-D-AB model except for its unique interior water drainage channel (which drains accumulated water below the concrete pad into the backfill) and flush-mounted diamond-plate cover. This transition sump features a rear panel raised above grade with your choice of AST compression fittings factory-installed, c-channel on the interior for hanging hardware, concrete anchoring flanges and integrated structural sleeves for our optional riser rack system.

DoubleWall Fiberglass (Monitored)
Shipped under a continuous vacuum test of 20+ Hg
Piping Transition Sump
Walkover design for pedestrians
UST to AST transition
Factory installed compression fittings for risers are included
Firewall - Protects internal components from external fires
Electrical Offset Design
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  • Made in the USA (i)
  • FRP Construction / Built like a Tank (i)
  • Clear walls - True DoubleWall AB-2481 compliant performance (i)
  • Large flat-walls to fit more entry fittings
  • Interstice continuously tested from factory to destination (i)
  • Same sump allows both Hydrostatic and Vacuum monitoring
  • Interstitial fluid included (i)
  • Walkover-style bolt-down diamond plate cover (i)
  • Below-grade water drainage system (i)
  • Factory-installed AST compression fittings
  • Integrated Rack System support sleeves (i)
  • Electrical Offset (EO) option (i)
  • Kitted: Includes installation accessories (i)
  • Third Party Approved
  • UL Listed
  • FDEP Approved: EQ# 615
  • 30 Year Warranty (i)