A 1,550 gallon double wall tank in cross-linked polyethylene
The Snyder 5490000N42 is a double wall chemical storage tank: a 1,550 gallon cross-linked polyethylene primary tank standing inside its own secondary shell, 76 inches across and 136 inches tall, weighing 970 pounds. The primary is rated for a specific gravity of 1.9, or 24,561 pounds of contents against 12,927 for water, and the tank is listed to ANSI/NSF 61. It is the tank for a regulated chemical where a berm is not practical: the containment travels with the tank, and cross-linked resin is the wall for the oxidizers and hot liquids that a linear tank cannot hold for long.
Buying for a site, a fleet or a district? Request a written quote with freight to your ZIP, or add it to your cart above and call 866-418-1777 with any question on the fit.
Containment that ships on the truck
A single wall tank of regulated chemical needs a berm sized to its volume, and a berm is concrete, a sump, a drain valve that must stay closed, and a rain problem. A double wall tank carries its containment inside the outer shell, so the 76 inch footprint is the whole footprint. The SPCC 40 CFR 112 compliance walkthrough covers where a double wall tank satisfies a spill plan on its own. Cross-linked polyethylene is the wall for sodium hypochlorite, sulfuric acid at strength and warm liquids, because it resists the stress cracking and creep that finish a linear tank; the trade is that it cannot be plastic-welded, so fittings are bulkhead or bolted. The list below is the resin's rated chemistry; the chemical compatibility database gives the rating at your concentration and temperature.
Snyder double wall tanks near 1,550 gallons
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| 5490000N42 (this tank, XLPE) | 1,550 | 76 x 136 in | 970 lb |
| 5490000N48 | 1,550 | 76 x 136 in | 780 lb |
| 5490000N51 | 1,550 | 76 x 136 in | 780 lb |
| 5990302N30 (low profile) | 1,500 | 93 x 76 in | 950 lb |
| 5570000N48 | 2,000 | 102 x 103 in | 900 lb |
The N48 and N51 are the same double wall shell in other resin options at 780 pounds; the N42's extra 190 pounds is the cross-linked primary. The 5990302N30 puts 1,500 gallons of double wall under a 76 inch ceiling on a 93 inch base, and the 5570000N48 steps to 2,000 gallons at 103 inches. The two 1,550 gallon vertical tank buyers guides (second guide) compare the single wall tanks at this volume, which is the right comparison if a berm is already in place.
Need a different size? Every tank in the table is in stock programs; ask for a quote on the one that fits, or call 866-418-1777.
Openings and instrumentation
- Access: 18 inch threaded, vented manway on the primary tank.
- Outlet: through the primary and secondary walls together, with the transition supported off the slab; specify the fitting for the chemical when ordering.
- Service limit: 120 F / 48 C.
A double wall tank has two levels to watch: the liquid in the primary and anything that appears in the interstitial space, which is the leak alarm. Choose the primary's sender for the chemical with the level gauge selection guide, and put a simple float or conductivity switch in the interstice. Size the volume with the tank sizing calculator and carry the reserve the tank sizing guide recommends; hypochlorite in particular is sized for short turnover.
Typical duty
Hypochlorite and acid storage at water systems that cannot build a berm, chemical storage inside occupied buildings where a spill must not reach a floor drain, and any regulated liquid at a site an inspector visits. Vent the manway outside, fill through a dip tube, and keep the interstitial inspection port accessible.
The interstice is inspected on a schedule, not when something smells wrong: a look into the port each shift, a logged check each week, and a written record that an inspector can read. Anything found in the space is a primary leak, and the tank comes out of service the same day. Because the outer shell carries the containment, nothing else is stacked against it, nothing is bolted through it, and the space between the walls is never used to store anything, including water from a wash-down. That discipline is the whole reason the tank is allowed where a berm is not.
Freight to your ZIP
At 136 inches long on the deck the 5490000N42 is oversize freight (NMFC 156600) at a lane rate; the freight cost estimator prices it for your ZIP, and the listed price is before freight. A forklift with long forks sets 970 pounds on the slab. Water-test the primary in stages, confirm the interstice stays dry through the hold, then drain and dry before the chemical delivery.
Liquids this resin is rated to store
These entries are the manufacturer's ratings for this resin, each with the concentration limit and the fitting and gasket to specify. Your concentration and temperature are confirmed on the chemical page or in the chemical compatibility database before ordering.
Freight and documents
Ships from: Philippi, WV. 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 5490000N42.
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, request a written quote, or call 866-418-1777. The listed price is before freight.
