101BG-2100 Series Below-Grade Spill Containers

OPW Below-Grade Spill Containment Manholes are used in new tank or riser pipe installations. The watertight spill containment chamber is installed completely below grade level. A grade level manhole cover lies flush with the driveway grade to reduce a tripping hazard and the potential for damage from snow plows and traffic. Surface water drains into the backfill between the manhole skirt and the exterior of the containment bucket. Below-grade spill containers are available in thread-on and slip-on configurations in 5 and 15-gallon capacities.

Important Notice: The OPW 101BG-2100 Spill Container Series does not prevent contamination of the soil or backfill resulting from spills flowing between the spill container and the outer shell. Ground contamination may result if the spill container is filled beyond capacity, or if a spill occurs outside the spill containment cell.

Features & BenefitsOrdering SpecificationReplacement PartsOperationDownloads

Features & Benefits

  • Pull-to-Open Drain Valve – Allows high-speed drainage of excess product into the tank. Designed with a convenient self-cleaning seal and removable screen for easier component cleaning. (CARB Approved)
  • Capacity – 5-gallon and 15-gallon capacities.
  • Outer Shell – The outer shell isolates the containment vessel from the surrounding concrete and gravel. This high-density polyethylene shell is designed to provide space between the outer shell and the containment vessel to allow any surface water that enters to flow into the backfill, not the containment vessel. Elimination of water in the spill container reduces product contamination and ice formation during cold winter months.
  • Vapor-Tight Lid – A unique, hinged and sealed containment vessel lid provides a vapor-tight seal, designed to prevent vapors from escaping at ground level while eliminating the accumulation of dirt and water that contaminate fuel. Incorporating a special lid interlock design, the grade level cover cannot be replaced on the outer shell without the lever being in the closed and locked position.
  • Composite Grade Level Cover – Made of sturdy fiberglass reinforced composite, the grade cover is less prone to theft than aluminum covers, and lighter in weight than cast iron. In addition, the cover lies flush with the actual grade so no ramps are required to support the cover, eliminating snow plow hazards and “speed bumps.” (Optional steel plate cover is also available)
  • Fuel Compatibility – Designed to accommodate the fuels of the future, including methanol, ethanol and fuels with MTBE additives.
  • Easy Installation – Reduces job-site time and installation costs. Simply thread the Duratuff® II base (cast iron base is optional) onto a standard 4″ schedule 40 pipe. Guides are provided to assure proper positioning of the spill container. The hinged lid orientation is adjustable during installation for site-specific placement.
  • Product Identification Tags – Available for both the spill container cover and bucket to positively identify the product contained in the UST with standard API symbols. (See product I.D. tag specification page for more information.)
  • Highway 20 Rated (H20) – All OPW spill containers and manholes exceed the requirements of the Highway 20 rating.


  • Grade cover: fiberglass reinforced composite (steel optional)
  • Lid: glass reinforced composite
  • Lever, top case: polyethylene
  • Outer shell: polyethylene, powder-coated steel
  • Containment cell: polyethylene
  • Base: Duratuff® II or cast iron

Listings and Certifications

101BG(S)-2100, 101BG(S)-2115

Approval Letter #93-26


Ordering Specifications

Duratuff® ll Base Models

Model Gal. Liter Drain Valve lbs. kg
101BG-2100 5 19 Pull 60 27
101BG-2105** 5 19 None 60 27
101BG-2115 15 57 Pull 65 29

**Slip on Base

Cast Iron Base Models

Model Gal. Liter Drain Valve lbs. kg
101BG-2100C 5 19 Pull 72 33
101BG-2115C 15 57 Pull 77 35

101BG Slip-on Model Instruction Sheet Order Number: H12579M

101BG-2100 Instruction Sheet Order Number: H12260M

1DK-2100 Drain Valve Kit Instruction Sheet Order Number: H11471M


101BG-2100 101BG-2115
in. cm in. cm
A 20-9/16 52 20-9/16 52
B 17-1/4 44 25-1/2 65
C* 23-29/32 76 27-31/32 71
D 22-1/16 56 26-5/32 66

*Subtract 2″ from “C” dimension for cast iron base models.

NOTE: “D” dimension is height from rider pipe to finish grade (+1″ for slope)

101BG-2115_15-Gallon 101BG-2100_5-Gallon

Replacement Parts

Part No. Description
1DK-2100-EVR Pull Drain Valve
101BG-21AR Inside Hatch Height Extender
101BG-21LA Red Lever and Crossarm Assembly
101BG-LATCH Latch Kit; Yoke, Cotterpin and Spring
101BG-BUCKET 5 Gallon Replacement Spill Container
C04785M 5 Gallon Insert Support
C04476M 15 Gallon Insert Support
D01747M Composite Manhole Cover
E00491 Complete Replacement Top Assembly
H11671M Steel Manhole Cover
H12280M Ring Seal
H12620 Inside Hatch
P110-20LID Steel Manhole Cover w/ID Tag System