The Enduraplas 1400 Gallon Green Horizontal Sump Bottom Leg Tank is a polyethylene horizontal leg tank built for haul and applicator duty where the job is to move liquid, not just store it. The sump bottom drains low and the molded legs let it sit on a frame or trailer deck, while the 1.9 specific gravity rating means it is engineered to carry dense liquids rather than plain water. Footprint is 70.0 x 102.0 inches with a height of 70 inches, so lay out your trailer or skid around that before you order.
Will it work for your liquid?
This is a 1400-gallon horizontal sump tank molded in polyethylene and rated to a specific gravity of 1.9. Filled with water at 8.34 lb/gal the contents alone run about 11,676 lb, and the tank is rated to carry up to roughly 22,184 lb of contents at its full SG rating. That is about 10,500 lb of contents-weight headroom over plain water, which is the margin that lets it haul fertilizer blends and dense chemical solutions. The catch: the tank's rating does not raise your running gear's rating. A fully loaded 22,184 lb of contents plus tank and frame weight is the number your axles and trailer must clear, so size the gear to the load, not the gallons. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide first. For agricultural haul use, our guides on applicator and leg tanks for fertilizer and loaf-style portable utility tanks walk through DOT classification and non-roadable trailer scope. See the technical drawing on this page for fitting locations and sump detail.
Chemical compatibility
Before the table: the base resin is unverified in our data (recorded as HDLPE but flagged for confirmation), and linear versus cross-linked polyethylene behave very differently against oxidizers like sodium hypochlorite, hydrogen peroxide, peracetic acid, and ferric chloride that appear below. We will confirm HDLPE vs XLPE in writing before any chemical sale, and the compatibility list assumes that confirmation. The chemicals below are drawn from the OEM chemical-resistance chart, which is concentration- and temperature-specific; match your exact concentration and service temperature to the chart, and pair the tank with the correct fitting and gasket materials shown. At a 1.9 specific gravity rating this is already the heaviest-duty poly rating in this size class; if your liquid exceeds 1.9 SG, call before ordering, because poly is the wrong tank above that density.
Acetic Acid 60% (PP/PVC fittings, EPDM gaskets) - details; Aluminum Sulfate 50% (PVC, EPDM) - details; Calcium Chloride 40% (PVC, EPDM) - details; DEF 32.5% (316SS, EPDM) - details; Ethylene Glycol 100% (PVC, EPDM) - details; Ferric Chloride 50% (PVC, EPDM) - details; Ferric Sulfate 60% (PVC, EPDM) - details; Ferrous Sulfate 20% (PVC, EPDM) - details; Hydrochloric Acid 37% (PVC, Viton) - details; Hydrofluoric Acid 48% (PP/PVC, Viton) - details; Hydrofluosilicic Acid 26% (PP/PVC, Viton) - details; Hydrogen Peroxide 50% (PVC, Viton) - details; Magnesium Chloride 30% (PVC, EPDM) - details; Peracetic Acid 30% (316SS, Aflas) - details; Phosphoric Acid 85% (PVC, Viton) - details; Polyaluminum Chloride (PVC, EPDM) - details; Potassium Carbonate 50% (PVC, EPDM) - details; Potassium Hydroxide, saturated (PVC, EPDM) - details; Propylene Glycol (PP/316SS, EPDM) - details; Sodium Bisulfate (PVC/PP, EPDM) - details; Sodium Bisulfite (PVC/PP, EPDM) - details; Sodium Carbonate 30% (PVC, EPDM) - details; Sodium Hypochlorite under 16.5% (PVC, Viton) - details; Sodium Thiosulfate 40% (PVC, EPDM) - details; Sulfuric Acid 98% (CPVC, Viton) - details; Urea Solution 50% (PP/PVC, EPDM) - details; Zinc Orthophosphate (PP/316SS, EPDM) - details. Ozonated water (up to 10 PPM, PVC/EPDM) is also listed but has no standalone page yet - call for compatibility detail. See the full chemical compatibility reference to cross-check your media.
The mistake to avoid
The common error on a horizontal leg tank this size is matching only the gallons and ignoring loaded weight, SG, and the gasket. Most of this list runs PVC fittings with EPDM gaskets, but several chemicals do not: hydrochloric 37%, hydrogen peroxide 50%, phosphoric 85%, sodium hypochlorite under 16.5%, and sulfuric 98% (on CPVC) all require Viton, peracetic acid 30% requires Aflas, and DEF and peracetic acid require 316SS metal. Do not substitute a cheaper EPDM seal on a Viton or Aflas chemical to save a few dollars - the gasket is the failure point. And before you commit to a frame, confirm it carries the full rated 22,184 lb at 1.9 SG, not just the water weight.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP code - use the Freight Cost Estimator for a quote, or call 866-418-1777 to confirm fittings, lock down HDLPE vs XLPE for your chemical, and book the freight. For mixed-product fertilizer service, also read our guide on fertilizer-blend tank stratification.
