Singlewall Closed Bottom

Retrofit SingleWall Tank Sump

The “RB” variant of the B-407 REVOLUTION Series Tank Sumps is a “Retrofit” design meant to be installed directly to the tank bung via the Bravo B-TBF fiberglass tank bung fitting. This sump can also be used as a transition sump since our TITAN manway cover can be installed above to satisfy H-20 or H-25 traffic load requirements. The 2-piece 407-RB retrofit sump features a high-neck round reducer at the top and is Octagonal (8-sided) all the way to the closed bottom. Read more

The bottom half of the sump features a deep tongue-in-groove channel for sealing via a simple slurry pour. This sump can also be used for standard or reversed single or double flange bolted tank man-ways by simply cutting the correct hole size and bolt pattern from the bottom. Without the traditional collar on the tank, you can install your piping when the tank arrives and at a lower point since no lamination is required, allowing a decreased tank burial depth of approximately 4” inches. It features a vertical o-ring seal at the top reducer edge which is easily serviceable. This o-ring mates with our new submersible water-tight SNAP-LOCK cover. The primary benefit of this sump is in the reduced overall cost. It can alternatively be used as a large transition sump

Less parts, labor and cost
SingleWall Fiberglass
FRP Tank Bung Fitting
Pour in place channel
Less labor and time
SNAP-LOCK cover is included
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  • Made in the USA (i)
  • FRP Construction / Built like a Tank (i)
  • Red clear walls (i)
  • 8-sided walls for 45° and 90° piping
  • 56"ø, 48"ø or 42"ø diameter sump
  • 32”ø or 36”ø diameter reducer
  • Mounts directly to tank bung via B-TBF fitting
  • Commonly used as piping/transition sump
  • Reduces total tank bury by up to 4”
  • Single pour-in-place seal at center with 2” deep channel
  • Height is adjustable in the field
  • Includes our new SNAP-LOCK cover
  • UL Listed
  • FDEP Approved: EQ# 615
  • Third Party Approved
  • 30 Year Warranty (i)