A 3,500 gallon Captor double wall tank for sulfuric acid where headroom is short
Snyder part number 5600000N30 is a 3,500 gallon Captor, Snyder's name for its double wall tank, built for sulfuric acid. It is moulded in high density linear polyethylene, opaque white, 102 inches in diameter and 158 inches tall, and weighs 2500 lb empty. The inner tank holds the acid and the outer tank holds any leak from it, so the tank carries its own secondary containment. It has an 18 inch threaded vented manway on top. Snyder rates it for liquids up to 1.9 specific gravity; 3,500 gallons of water weighs 29,190 lb (3,500 x 8.34), and at the full rating the contents can reach 55,461 lb. The service limit is 120 F and Snyder backs the tank with a 3 year warranty.
Low roof or a canopy over the spot? Call 866-418-1777 with the clear height and the acid strength, or check freight to your ZIP and add it to your cart above.
Where it goes
At 158 inches tall this tank goes where a taller acid tank will not: under a canopy, inside an existing chemical building, below a pipe rack or a service run. It still holds 3,500 gallons, a real bulk quantity for pH control at a water or wastewater plant, fertilizer and chemical blending, or process supply, with day tanks and metering pumps fed from it. The Captor's outer wall is the containment, so the room does not need a dike sized to hold the tank; our Captor walkthrough for SPCC compliance explains how it is credited in a spill plan.
Snyder publishes no acid strength against this part number, so tell us the concentration and the temperature and we will confirm the tank with Snyder before the order. For any other liquid, our chemical compatibility guide is the starting point. Keep the contents under 120 F. Do not plan on the full nameplate: the Captor freeboard sizing guide shows how much room a heavy liquid needs above the working level. Size against your usage with the tank sizing calculator and tank sizing guide.
What to check before you buy
- Clear height. 158 inches is the tank alone. Add the fill line, the transmitter and room to open the manway, then measure the building.
- Pad. Over twenty-seven tons at the full rating, on a 102 inch circle. That needs a designed slab, not an old yard surface; see our guide to concrete pad sizing for above ground polyethylene tanks.
- Manway. An 18 inch threaded vented manway on top for filling, instruments and inspection.
- Fittings. No factory outlet is listed. Tell us the connections your piping needs; on a Captor they pass through both walls and are installed at the factory.
- Drawing. Snyder's drawing, linked under Technical Drawing on this page, shows the overall dimensions and manway position.
Other versions and sizes nearby
The 3,500 gallon Captor also comes in cross-linked polyethylene as 5600000N40 and 5600000N42, and in black as 5600000N46. In the acid line, the 3000 gallon sulfuric acid Captor is one size down and the 4000 gallon sulfuric acid double wall tank one size up.
Shipping and receiving
The tank ships from Snyder's Lincoln, Nebraska plant at 102 by 102 by 158 inches and 2500 lb, freight class 250. At that width the online estimator does not price it, so call 866-418-1777 for freight with the ZIP and your unloading plan. The listed price is before freight. Lift it with slings, never by the manway. At delivery, check the part number against 5600000N30 on the bill of lading, walk the outer wall for transit damage, and fill it with water first to prove the fittings before acid goes in.
Ready to order? Add it to your cart at the top of this page, get LTL freight to your ZIP with the freight cost estimator, or call 866-418-1777. The listed price is before freight.
Freight and documents
Ships from: Lincoln, NE. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 5600000N30.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, or call 866-418-1777. The listed price is before freight.