The Enduraplas 1900 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD01900Y) is built for haul-and-transfer duty where you need a large-volume, road-stable tank that rides low between its leg supports. This is a horizontal leg tank molded in polyethylene, rated to a 1.9 specific gravity, with a sump bottom that drains toward the outlet so you can pull contents down without leaving a heavy heel behind. That matters on every haul cycle: a lower residual heel means more of your load actually gets delivered and a cleaner changeover when you switch products. At 1900 gallons in yellow, it covers the bulk-fertilizer, water-haul, and heavy-liquid transfer work that puts it squarely in the horizontal tank and leg tank category Enduraplas built it for.
Will it work for your job?
The tank measures 130 inches long by 71 inches wide by 79 inches tall, giving you a 71.0 x 130.0 inch footprint to fit onto a trailer deck, skid, or transport frame. The 1.9 SG rating is the number that matters most here: it tells you the wall is engineered to carry liquids heavier than water. Filled with water at 1900 gallons the contents weigh about 15,846 lb, while the tank is rated to carry contents up to 30,107 lb. That ~14,261 lb spread between a water load and a full 1.9-SG dense-chemical load on the same tank is your single biggest axle and tie-down planning number. Run your loaded figures through the Tank Sizing Calculator and the Tank Sizing Guide so your trailer, axles, and tie-downs are matched to that 30,107 lb maximum. See the technical drawing on this page for fitting locations and the sump-bottom profile.
Chemical compatibility
This tank is molded in polyethylene with a 1.9 specific gravity rating. Confirm the exact resin grade (HDLPE versus XLPE) with us before putting it into chemical service — that distinction changes what the wall will tolerate over time. Material pairings fall into three tiers in the data below: the majority run PVC fittings with EPDM gaskets; the aggressive acids and oxidizers (hydrochloric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, sodium hypochlorite, sulfuric) call for Viton gaskets; and a handful (DEF, peracetic acid, propylene glycol, zinc orthophosphate) need 316SS fittings, with peracetic acid requiring an Aflas gasket. Everything below is drawn from the OEM chemical-resistance chart, which is always concentration- and temperature-specific, so match your exact strength and operating temperature before committing. With the right fittings and gaskets, this 1.9 SG tank is rated to handle:
- Acetic Acid (60%) — PP/PVC fittings, EPDM gasket
- Aluminum Sulfate (50%) — PVC fittings, EPDM gasket
- Calcium Chloride (40%) — PVC fittings, EPDM gasket
- DEF (32.5%) — 316SS fittings, EPDM gasket
- Ethylene Glycol (100%) — PVC fittings, EPDM gasket
- Ferric Chloride (50%) — PVC fittings, EPDM gasket
- Ferric Sulfate (60%) — PVC fittings, EPDM gasket
- Ferrous Sulfate (20%) — PVC fittings, EPDM gasket
- Hydrochloric Acid (37%) — PVC fittings, Viton gasket
- Hydrofluoric Acid (48%) — PP/PVC fittings, Viton gasket
- Hydrofluosilicic Acid (26%) — PP/PVC fittings, Viton gasket
- Hydrogen Peroxide (50%) — PVC fittings, Viton gasket
- Magnesium Chloride (30%) — PVC fittings, EPDM gasket
- Peracetic Acid (30%) — 316SS fittings, Aflas gasket
- Phosphoric Acid (85%) — PVC fittings, Viton gasket
- Polyaluminum Chloride — PVC fittings, EPDM gasket
- Potassium Carbonate (50%) — PVC fittings, EPDM gasket
- Potassium Hydroxide (saturated) — PVC fittings, EPDM gasket
- Propylene Glycol — PP/316SS fittings, EPDM gasket
- Sodium Bisulfate — PVC/PP fittings, EPDM gasket
- Sodium Bisulfite — PVC/PP fittings, EPDM gasket
- Sodium Carbonate (30%) — PVC fittings, EPDM gasket
- Sodium Hypochlorite (<16.5%) — PVC fittings, Viton gasket
- Sodium Thiosulfate (40%) — PVC fittings, EPDM gasket
- Sulfuric Acid (98%) — CPVC fittings, Viton gasket
- Urea Solution (50%) — PP/PVC fittings, EPDM gasket
- Zinc Orthophosphate — PP/316SS fittings, EPDM gasket
- Ozonated Water (up to 10 PPM) — PVC fittings, EPDM gasket
Gasket and fitting material guidance for each chemical lives on the linked pages and our chemical compatibility reference. (Ozonated Water is listed without a dedicated page; the pairing above still applies.)
The mistake to avoid
The biggest error on a tank like this is treating the 1.9 SG rating as headroom you can ignore on the fittings. The wall is rated for dense liquids, but the fitting and gasket material has to match the chemical — Sulfuric Acid at 98% calls for CPVC fittings with Viton, DEF and Peracetic Acid need 316SS, and the hypochlorite, peroxide, and strong-acid lines run Viton rather than EPDM. Pairing the wrong gasket with an aggressive chemical is what causes leaks long before the tank itself ever fails. Just as important, confirm the exact resin grade with us before chemical filling. If you are blending fertilizer in this tank, read up on density-driven stratification in our fertilizer-blend stratification guide, and review the applicator and leg tank fertilizer guide plus the portable utility tank DOT classification guide before you put it on the road.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it and walk you through fittings, gaskets, and trailer mounting for your liquid.
