The Snyder Industries 3000 Gallon Captor double-wall tank is built for the jobs where a single failure can't be allowed to reach the ground: bulk fluid storage that needs full secondary containment in one freestanding unit. It holds 3,000 gallons in the inner XLPE primary, stands 142 inches tall on a 102 x 102 inch footprint, and is molded in black crosslinked linear polyethylene rated to a 1.5 specific gravity. Before you read further, the four numbers that drive your install: a 102 x 102 inch square base, 142 inches of height clearance, 25,020 pounds full of water, and 37,530 pounds at maximum rated contents. That last number tells you how heavy a liquid this tank is engineered to carry - not just how much volume it holds.
Will it work for your application
This is a Snyder Captor double-wall design, meaning the storage tank sits inside an integral outer containment shell - the secondary containment is part of the unit, not a separate basin you build and maintain. Plumbing comes off a flange and an 18-inch PE threaded and vented fitting, with a manway providing 15-inch access for inspection and cleaning. Before ordering, confirm your inlet and outlet plumbing mates to the flange and the 18-inch PE threaded connection, and that your fill and vent routing uses the vented fitting. The full footprint is 102.0 x 102.0 inches, so confirm your pad or containment area accommodates that square base plus the 142-inch height before you commit. See the technical drawing on this page for fitting locations and the containment geometry.
The 1.5 specific-gravity rating is the differentiator here. It means the primary tank is built to hold liquids up to 1.5 times the density of water - dense fluids like brines and certain liquid fertilizers that a standard 1.0 to 1.1 rated water tank can't safely carry. If you're storing a heavier-than-water liquid, this XLPE Captor is the right call over a cheaper, lower-rated tank. Use the Tank Sizing Calculator and the Tank Sizing Guide to match your volume and required freeboard to this unit.
What it weighs - and the mistake to avoid
Full of water, this tank carries 25,020 pounds. At its maximum rated contents weight, that climbs to 37,530 pounds. Those numbers drive your pad, anchoring, and equipment planning far more than the empty tank does. The common mistake on a double-wall Captor is treating the nominal 3,000 gallons as usable volume - it isn't. ASTM D1998 sizing requires freeboard for thermal expansion and density, and on a containment tank you also have to respect the rated capacity of the outer shell. Our guide on Captor double-wall freeboard sizing per ASTM D1998 walks through the real volume you can actually use. If this is going into an oil or fuel containment role, the SPCC 40 CFR 112 compliance walkthrough covers how the integral secondary containment fits that rule.
Other things to plan for
The manway and flanged connections seal through their gaskets, and on a containment tank the whole point is that those seals hold - verify gasket condition every time you open the 15-inch manway for inspection. If you're spec'ing this as a fire-water reservoir or for cold-climate storage, the NFPA 22 fire-water reservoir design guide covers sizing discipline and freeze protection for remote sites. Operators who run this tank long-term should also read why premature failures originate at the vapor-saturated headspace rather than the liquid side - that 15-inch manway access is your inspection point for catching it.
This 3000 gallon black XLPE Snyder double wall tank ships LTL freight from the nearest Snyder plant (Lincoln, NE or West Virginia), quoted live to your ZIP. Get a freight quote with the Freight Cost Estimator or call 866-418-1777. At over 37,000 pounds rated, this is a forklift-and-pad delivery, so let us help you plan the offload before it leaves the plant.
