The Snyder Industries 150 Gallon Plastic Vertical Double Wall Liquid Chemical Storage Tank is a containment-built vertical storage tank rated for aggressive chemical service, with an integral secondary wall that captures spills around the primary tank. It carries a 1.9 specific gravity rating in white High Density Linear Polyethylene (HDLPE), stands 60" tall on a 34" x 34" footprint, and holds 150 gallons. If you are sizing a double wall tank for acids, peroxides, or DEF, it answers the three questions that matter: whether it fits your chemical, what it weighs when full, and how it ships.
Will it work for your chemical and your space
The 1.9 SG rating is the number to anchor on. It means the wall is engineered to hold a liquid weighing up to 1.9 times the weight of water - the reason it carries a maximum rated contents weight of 2,377 lb against a full-water weight of 1,251 lb. Divide that out and you get roughly 15.8 lb per gallon of headroom at 150 gallons, so you can check your chemical's weight per gallon directly instead of converting specific gravity in your head. The 34.0" x 34.0" footprint keeps it compact for indoor chemical rooms and bermed pads, and the 60" height clears most standard doorways and ceilings for a 150 gallon unit.
The openings documented for this tank are a 14" PE threaded/vented fitting on top and a manway with 11-3/8" access for fill, vent, inspection, and cleanout. Any side or bottom outlet, drain, or bulkhead fitting is not listed in the available data - confirm what your installation needs against the technical drawing on this page before ordering valves and fittings. For sizing math across tank, pump, and footprint constraints, the Tank Sizing Calculator and Tank Sizing Guide walk you through it.
Chemical compatibility
This tank is molded in HDLPE rated to 1.9 specific gravity. The chemicals below are commonly stored in this resin at the listed concentrations - but fitting and gasket materials change by chemical, and the controlling document is the OEM chemical-resistance chart, which is concentration- and temperature-specific. Match your exact concentration, temperature, and trace constituents before committing. The pattern is worth memorizing: Viton gaskets for the strong acids and oxidizers, Aflas for peracetic acid, and EPDM for the salts, glycols, carbonates, DEF, and urea.
- Sulfuric Acid 98% - CPVC fittings, Viton gaskets
- Hydrochloric Acid 37% - PVC fittings, Viton gaskets
- Hydrofluoric Acid 48% - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid 26% - PP/PVC fittings, Viton gaskets
- Phosphoric Acid 85% - PVC fittings, Viton gaskets
- Acetic Acid 60% - PP/PVC fittings, EPDM gaskets
- Peracetic Acid 30% - 316SS fittings, Aflas gaskets
- Hydrogen Peroxide 50% - PVC fittings, Viton gaskets
- Sodium Hypochlorite (bleach) under 16.5% - PVC fittings, Viton gaskets
- Ferric Chloride 50%, Ferric Sulfate 60%, Ferrous Sulfate 20%, and Aluminum Sulfate 50% - PVC fittings, EPDM gaskets
- Sodium Carbonate 30%, Potassium Carbonate 50%, and Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Calcium Chloride 40%, Magnesium Chloride 30%, and Sodium Thiosulfate 40% - PVC fittings, EPDM gaskets
- DEF 32.5% - 316SS fittings, EPDM gaskets; and Urea Solution 50% - PP/PVC fittings, EPDM gaskets
- Ethylene Glycol 100% - PVC fittings, EPDM gaskets; and Propylene Glycol - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate and Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
- Polyaluminum Chloride (PVC fittings) and Zinc Orthophosphate (PP/316SS fittings) - EPDM gaskets; Ozonated Water up to 10 PPM - PVC fittings, EPDM gaskets
Full concentration and temperature limits live in our Chemical Compatibility Database.
The mistake to avoid
The costly error on a double wall chemical tank is matching the fitting and gasket to the tank instead of the chemical. The HDLPE shell tolerates this whole list, but a PVC fitting on 98% sulfuric, or an EPDM gasket where Viton or Aflas is called for, will fail long before the wall does. Spec your fittings, valves, and gaskets to the chart for your exact chemical and concentration - Viton for sulfuric, HCl, HF, phosphoric, peroxide, and bleach; Aflas for peracetic acid; EPDM for the rest. If you are storing for spill-prevention purposes, our Snyder Captor double-wall walkthrough for SPCC 40 CFR 112 covers how the integral secondary containment fits a compliance plan.
This 150 gallon double wall vertical tank ships LTL on a pallet from the Snyder plant in Marked Tree, AR, with freight quoted live to your ZIP - run your address through the Freight Cost Estimator for a freight rate, or call 866-418-1777 and we will quote it and confirm fitting compatibility for your chemical. For more on sizing this family, see our 150 gallon vertical buyer's guides for the 41859 and 41469 models.
