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Product Overview

The 400-Gallon Flexible Secondary Containment Tank (No Drain) by UltraTech provides portable, collapsible spill containment for fuel tanks, transformers, and chemical storage. Constructed from durable Copolymer 2000 material, it features L-bracket corners for quick assembly without tools. Outside dimensions measure 102"L x 48"W x 24"H with a 400-gallon capacity. Weighs just 45 lbs for easy transport and ships via UPS. Designed to help facilities meet EPA 40 CFR 112 SPCC secondary containment requirements for above-ground storage tanks and equipment. Black color blends with industrial environments.

Technical Specifications

Flexible Containment Sump — 18 oz. PVC Fabric

SKU A2850U
Capacity 400 Gallons
Outside Dimensions 102" L x 48" W x 24" H
Material Copolymer 2000
Drain No Drain
Color Black
Weight 45 lbs
Setup L-Bracket Easy Set-up
Shipping Ships UPS
Manufacturer UltraTech

Expert Insights

Flexible containment tanks are ideal for temporary or semi-permanent installations where rigid containment is impractical. The no-drain version is preferred when regulations prohibit uncontrolled discharge — collected liquids must be pumped out manually, ensuring no contaminated water leaves the containment area. At 400 gallons, this tank provides 110% containment for a standard 275-gallon IBC tote or 55-gallon drum cluster. The Copolymer 2000 material resists UV degradation and most petroleum products. For permanent outdoor installations, consider adding a tarp cover to extend service life and prevent rainwater accumulation.

Frequently Asked Questions

400-Gal. Flexible Secondary Containment Tank NO Drain

What is the difference between the drain and no-drain versions?

The no-drain version (A2850U) requires collected liquids to be pumped out manually. The drain version (A2851U) includes a built-in drain fitting for gravity discharge. Many SPCC plans require the no-drain version to prevent accidental release of contaminated stormwater.

How do I set up this flexible containment tank?

The tank uses L-bracket corners that fold flat for transport and pop up for quick assembly. No tools are required. One person can set it up in minutes. Simply unfold, insert the L-brackets at each corner, and the tank is ready for use.

Will this tank hold a 275-gallon IBC tote?

Yes. At 400 gallons, this tank provides more than 110% containment capacity for a single 275-gallon IBC tote, meeting EPA SPCC secondary containment requirements. The 102" x 48" footprint accommodates standard IBC dimensions.

What chemicals is the Copolymer 2000 material compatible with?

Copolymer 2000 is resistant to most petroleum products, oils, coolants, and many common industrial chemicals. For specific chemical compatibility questions, contact AbsorbentsOnline technical support with your exact chemical list.

Can this tank be used outdoors year-round?

Yes, the Copolymer 2000 material is UV-resistant and designed for outdoor use. For extended outdoor deployment, consider a cover to prevent rainwater accumulation, which would reduce effective containment capacity.

Cross-Reference Guide

This product is compatible with applications that use the following part numbers:

  • introCompatible part numbers for 400-gallon flexible secondary containment:
  • partsA2850UUltraTech 2850A2851U (with drain version)
  • noteUltraTech 400-Gallon Flexible Containment Sump, no drain. AbsorbentsOnline SKU: A2850U. Also available with drain as A2851U.