The Snyder Industries 4500 Gallon HDLPE Vertical Double Wall Liquid Chemical Storage Tank is a 1.5 specific-gravity vertical double wall tank built for bulk chemical storage with integral secondary containment. Molded from high density linear polyethylene (HDLPE) in white, it stands 197 inches tall on a 102 x 102 inch footprint, putting full primary capacity and the containment annulus into a single vertical storage tank footprint. The double wall construction means the outer shell serves as built-in containment, which is the configuration most operators reach for when a Snyder vertical tank has to satisfy spill-containment requirements without a separate berm.
Will it work for your application?
This is a 4500 gallon double wall tank rated to 1.5 specific gravity, so it handles liquids up to roughly 12.5 pounds per gallon. Filled with water (SG 1.0) it carries about 37,530 pounds; loaded to its full 1.5 SG rating, contents reach approximately 56,295 pounds. Use those weights to confirm your pad, anchoring, and structural support before delivery. The footprint is 102.0 x 102.0 inches and overall height is 197 inches, so verify door clearance, overhead room, and crane or forklift access at the install site. For help matching capacity to your draw-down and refill cycle, run the Tank Sizing Calculator or read the Tank Sizing Guide. This tank's fitting and outlet configuration is specified at order; reference the technical drawing on this page for dimensional detail, and call 866-418-1777 to confirm fitting sizes and placement before you finalize your plumbing layout.
Chemical compatibility
This tank is molded in HDLPE and rated to 1.5 specific gravity, which sets the boundary for what it can safely hold. At that rating it is suited to chemicals such as acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), DEF (32.5%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), urea solution (50%), and ozonated water (up to 10 PPM). The fitting and gasket plan splits three ways: DEF uses 316SS fittings with EPDM gaskets; acetic acid and urea solution use PP/PVC fittings with EPDM; and the remaining six pair PVC fittings with EPDM. Ozonated water is compatible at this SG with PVC fittings and EPDM gaskets, but it has no standalone compatibility page yet, so confirm it through the main database. Always check the specific fitting and gasket material against the OEM chemical-resistance chart for your exact concentration and operating temperature, since both shift the recommendation.
Several common chemicals require a heavier tank than this 1.5 SG model and need the 1.9 SG version instead: ethylene glycol, ferric chloride, ferric sulfate, hydrochloric acid, hydrofluoric acid, hydrofluosilicic acid, hydrogen peroxide, peracetic acid, phosphoric acid, polyaluminum chloride, potassium carbonate, potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, sodium hypochlorite, sodium thiosulfate, sulfuric acid, and zinc orthophosphate. Many of these also call for Viton gaskets rather than EPDM (peracetic acid uses Aflas), so stepping up to 1.9 SG often means upgrading the elastomer too, not just the heavier tank. If your service is on that list, step up to a 1.9 SG tank rather than forcing this one. Verify your chemical and concentration in the Chemical Compatibility Database first; direct pages are available for acetic acid, aluminum sulfate, calcium chloride, DEF, ferrous sulfate, magnesium chloride, sodium carbonate, and urea solution.
The mistake to avoid
The most common error on a double wall chemical tank this size is treating specific gravity as an afterthought. This model is rated to 1.5 SG; pumping in a denser chemical, or one that demands the 1.9 SG build, overstresses the wall and voids the rating. Match the SG rating to your liquid first, then confirm fitting and gasket materials. Because this is double wall construction, also plan your instrumentation: monitor the primary tank level with a properly selected gauge, and treat the annular space as part of your containment-monitoring program. For the containment side, the Snyder Captor double-wall SPCC walkthrough covers the compliance framework, and the freeboard sizing guide covers usable volume, thermal expansion, and the real headroom you should leave. For primary-level instrumentation, see level gauge selection for chemical service, and for alarm and cutoff design, spillover redundancy and high-level alarm architecture.
This tank ships LTL freight from the Snyder Industries plant in Lincoln, NE, with the rate quoted live to your ZIP code. Get your freight number with the Freight Cost Estimator, or call 866-418-1777 to talk through specific gravity, fitting configuration, and delivery scheduling before you order.
