The Snyder Industries 1685 Gallon Horizontal Leg Tank is a 1.9 specific-gravity polyethylene haul tank built to ride a trailer or skid and carry dense agricultural and chemical loads that would overload a water-rated vessel. It measures a nominal 159 inches long by 62 inches wide by 62 inches high in white polyethylene, with securing hoops for tie-down on a horizontal leg tank chassis. Full of water it carries roughly 14,053 lb, and at its full 1.9 SG rating the tank is engineered for as much as 26,701 lb of contents - the absolute ceiling that defines the heavy-duty build, not the design target for every product you run.
Will this horizontal leg tank work for your load?
This is a Snyder horizontal leg tank in the 1685-gallon class, with a nominal 62 x 159 inch footprint that drops onto a flatbed or applicator frame. Measure your assembled rig for clearance, not the bare tank - legs, securing hoops, and trailer deck height all add to the 62-inch tank height before you check bridge and shop-door limits. Size the chassis to the contents, not the water number: water fills it to about 14,053 lb, but the right way to spec a trailer is your actual fill volume multiplied by your product's specific gravity, with 26,701 lb standing as the structural ceiling the 1.9 SG resin can hold. Lighter products such as DEF or glycol land far below that ceiling; a dense load such as 98% sulfuric acid pushes toward it. Run your fill volume and product density through the Tank Sizing Calculator and the Tank Sizing Guide before you commit to a trailer rating, and request the fitting and outlet layout from us so your plumbing and baffling plan matches the actual tank.
Chemical compatibility
This tank is molded in polyethylene with a 1.9 specific-gravity rating - already the heavy-duty top-tier build, with no denser-rated version to step up to in this size and shape. The resin is recorded as HDLPE but ends with a question mark, so confirm HDLPE versus XLPE construction with us before putting it into chemical service; cross-linked and linear polyethylene behave differently with aggressive products. That 1.9 SG rating is exactly what lets it carry the densest solutions on this list - 98% sulfuric acid (SG near 1.84) and concentrated ferric chloride are the loads that justify a 1.9 tank over a standard 1.5 build. Compatibility always depends on concentration and temperature, so check each chemical against the concentration- and temperature-specific OEM chemical-resistance chart for your exact conditions.
Products this tank's resin and SG rating support, with the fitting and gasket materials each one needs, include Acetic Acid (60%, PP/PVC fittings, EPDM gasket), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, EPDM), Ethylene Glycol (100%, PVC, EPDM), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Ferrous Sulfate (20%, PVC, EPDM), Hydrochloric Acid (37%, PVC fittings, Viton gasket), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Magnesium Chloride (30%, PVC, EPDM), Peracetic Acid (30%, 316SS, Aflas), Phosphoric Acid (85%, PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate (50%, PVC, EPDM), Potassium Hydroxide (saturated, PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Carbonate (30%, PVC, EPDM), Sodium Hypochlorite (under 16.5%, PVC, Viton), Sodium Thiosulfate (40%, PVC, EPDM), Sulfuric Acid (98%, CPVC fittings, Viton), Urea Solution (50%, PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC, EPDM). Match the gasket - EPDM, Viton, or Aflas - to the product, because the wrong elastomer fails long before the polyethylene does. See our full chemical compatibility reference before you fill.
The mistake to avoid
The expensive error on a 1.9 SG haul tank is spec'ing the chassis off the wrong number - either rating to the water weight when you run a dense product, or over-building for the full 26,701 lb ceiling when your product is light. Fourteen thousand pounds is only water; a concentrated fertilizer blend or 98% sulfuric acid weighs far more per gallon, while DEF or glycol weighs only a little more. Rate the trailer, axles, and tie-downs to your actual fill volume times your product's specific gravity. For agricultural haul use, also confirm your DOT classification and trailer scope before you run loaded; our guides on applicator and leg tanks for fertilizer (DOT/NRT scope), the 49 CFR 173.5 agricultural exemption, fertilizer-blend stratification and mixing, and Snyder Captor double-wall SPCC compliance walk through the rules that catch operators by surprise.
This Snyder horizontal leg tank ships LTL freight from the Lincoln, NE plant, quoted live to your ZIP. Get your freight quote with our Freight Cost Estimator or call 866-418-1777, and the team can confirm HDLPE versus XLPE resin, fitting and outlet layout, and the right chassis rating for your product before you order.
