The Enduraplas 800 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD00800Y) is built for field transport and stationary holding of heavy liquids. Molded in yellow polyethylene by Enduraplas, it measures 94 inches long, 60 inches wide, and 55 inches tall, with legs that keep the tank stable on a trailer deck or skid. The bottom slopes to a sump so the tank drains down to the last usable gallons, which matters for fertilizer, brine, DEF, and chemical applicators who do not want product stranded at the floor. That sump outlet is the primary wetted connection on the tank, so the fitting material and gasket at the drain are part of the chemical decision, not an afterthought.
Will it work for your liquid?
This tank carries an 800-gallon nominal capacity and a 1.9 specific gravity rating, which is the key number to check before you fill it. Plain water (SG 1.0) fills it to roughly 6,672 pounds; the 1.9 rating means the tank is engineered to hold contents up to about 12,677 pounds total, so heavy fertilizer blends and dense brines stay inside the design envelope. Run your own product's specific gravity against that ceiling. At a 1.9 rating this tank sits at the top of the polyethylene range, so for the liquid chemicals covered here there is no heavier-duty step-up tank to chase; matching your product's SG to the 12,677-pound ceiling is the complete weight decision. The 60 x 94 inch footprint and 55-inch height are the dimensions to confirm against your trailer bed or containment pad before ordering. If you are matching the tank to a known load weight or fill volume, the Tank Sizing Calculator and the Tank Sizing Guide walk you through it. One gap to close up front: our data does not specify the outlet or fitting configuration on this tank, so confirm the sump-outlet size and material with us at 866-418-1777 and match it to the chart below for your chemical.
Chemical compatibility
This tank is rated to 1.9 specific gravity. The resin code is uncertain in our data, so confirm the construction grade (HDLPE vs XLPE) before putting it into chemical service. Chemical resistance always depends on concentration and temperature, so check each fluid against the manufacturer's chemical-resistance chart, which is concentration- and temperature-specific. Whatever fluid you choose, the sump-outlet fitting and gasket must match the material the chart calls for.
Per the OEM chart, EPDM-gasket service with PVC fittings covers aluminum sulfate (50%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), calcium chloride (40%), magnesium chloride (30%), ethylene glycol (100%), sodium carbonate (30%), potassium carbonate (50%), potassium hydroxide (saturated), sodium thiosulfate (40%), and polyaluminum chloride. Acetic acid (60%) and urea solution (50%) use PP or PVC fittings with EPDM gaskets, while hydrofluoric acid (48%) and hydrofluosilicic acid (26%) use PP or PVC fittings with Viton gaskets, not EPDM. The acids that demand Viton gaskets continue with hydrochloric acid (37%), phosphoric acid (85%), hydrogen peroxide (50%), and sodium hypochlorite (<16.5%); sulfuric acid (98%) needs CPVC fittings with Viton. Aggressive fluids step up to stainless: DEF (urea 32.5%) uses 316SS fittings with EPDM, so DEF haulers should spec stainless at the outlet rather than defaulting to cheaper PVC, and peracetic acid (30%) uses 316SS with Aflas. Propylene glycol, sodium bisulfate, sodium bisulfite, zinc orthophosphate, and ozonated water (up to 10 PPM) are also on the chart. Match fittings and gaskets exactly as specified, and see our full chemical compatibility reference before committing.
Freight and ordering
This 800-gallon horizontal leg tank ships LTL freight from Enduraplas in Neche, ND, quoted live to your ZIP. Because freight on a tank this size depends on your destination and delivery type, get a real number with the Freight Cost Estimator or call 866-418-1777 and we will quote it for you. The most common mistake on horizontal leg and sump tanks is ordering the wrong fitting and gasket combination at the drain for the intended chemical, so lock in the SG rating and pull the fitting/gasket spec from the chart above before you buy. For application context on fertilizer and leg-tank use, see our guides on applicator and leg tanks for fertilizer, portable utility tank DOT classification, and fertilizer-blend tank stratification.
