The Enduraplas 250 Gallon White Horizontal Sump Bottom Leg Tank is a 250-gallon polyethylene horizontal leg tank built for mobile and stationary fluid handling where a low, stable profile matters. It measures 55 inches long by 47 inches wide by 37 inches tall, sits on integrated legs, and drains through a sump bottom so contents pull toward the outlet instead of pooling. The natural white body lets you read fluid level at a glance, and the 1.9 specific gravity rating is the heaviest-fluid class made in this style - there is no higher-SG tank to step up to.
Will this tank work for your job?
This is a 250-gallon horizontal tank with a 47.0 x 55.0 inch footprint, so it bolts onto a skid, applicator, trailer, or pickup bed without a tall center of gravity. Filled with water it carries roughly 2,085 pounds, and its 1.9 SG rating supports a maximum rated contents weight of about 3,962 pounds - that headroom is the whole reason to run a horizontal leg tank, because heavier ag and chemical liquids quickly exceed what water-only ratings allow. Confirm your loaded weight against your trailer or mount rating before filling. The sump-bottom outlet size and placement are shown on the technical drawing on this page rather than in this listing, so confirm the outlet against your plumbing before you order. If you are still picking a size, run the numbers through the Tank Sizing Calculator and review the Tank Sizing Guide.
Chemical compatibility
This tank is molded polyethylene rated to a 1.9 specific gravity. The resin is recorded as HDLPE but not yet confirmed - confirm whether it is HDLPE or crosslinked (XLPE) with us before putting this tank into chemical service, because the two behave differently with aggressive oxidizers. Just as important: this listing ships with no chemical fittings configured. The fitting and gasket materials below describe what each chemical requires, not hardware included with the tank, so spec your bulkhead fittings, valves, and gaskets to the chemical separately. Compatibility is also concentration- and temperature-specific per the OEM chemical-resistance chart, so match your exact conditions before committing.
- Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
- Calcium Chloride (40%) - PVC fittings, EPDM gaskets
- DEF (32.5%) - 316SS fittings, EPDM gaskets
- Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
- Ferric Chloride (50%) - PVC fittings, EPDM gaskets
- Ferric Sulfate (60%) - PVC fittings, EPDM gaskets
- Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
- Hydrochloric Acid (37%) - PVC fittings, Viton gaskets
- Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets
- Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
- Peracetic Acid (30%) - 316SS fittings, Aflas gaskets
- Phosphoric Acid (85%) - PVC fittings, Viton gaskets
- Polyaluminum Chloride - PVC fittings, EPDM gaskets
- Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Propylene Glycol - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate - PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
- Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
- Sodium Hypochlorite (under 16.5%) - PVC fittings, Viton gaskets
- Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets
- Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
- Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
Notice how the fitting and gasket material shifts by chemical - the strong oxidizers and concentrated acids call for Viton or Aflas gaskets and CPVC or 316 stainless hardware, not the EPDM that works fine for glycols and carbonates. Matching the wrong elastomer is the single most common mistake on a chemical tank, so spec your fittings to the chemical, not the tank. For the full picture, start at the chemical compatibility hub.
Freight and ordering
This Enduraplas horizontal leg tank ships LTL from the plant in Neche, ND, with freight quoted live to your ZIP - get your number from the Freight Cost Estimator or call 866-418-1777 and we will work it out by phone. If you are mounting it on an applicator or non-roadable trailer, our guides on leg and applicator tank DOT scope and portable utility tank classification under 49 CFR 173.5 cover the regulatory framework, and for blend work see our breakdown of fertilizer-blend tank stratification.
