Enduraplas 1600 Gallon Yellow Horizontal Sump Bottom Leg Tank

The Enduraplas 1600 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD01600Y) is a 1,600-gallon polyethylene horizontal leg tank built for over-the-road and field hauling of fertilizer blends and process chemicals. The yellow tank measures 130 inches long by 71 inches wide and stands 59 inches tall, riding on a 71.0 x 130.0-inch footprint, with a sump bottom that drains the load to a single low point so you can pull product out clean. What sets it apart from a water-only tank is the wall rating: 1.9 specific gravity, which is what lets you run dense liquids in it instead of being capped at water weight.

Will it carry your load?

The numbers that matter are simple:

• 1.9 SG wall rating - built for heavy fertilizer solutions and acids, not just water
• 25,354 lb maximum rated contents - the ceiling the polyethylene wall is engineered to hold
• 13,344 lb full of water - leaving roughly 12,010 lb of headroom for dense liquid above water weight

That spread between water weight and rated weight is the whole point of the 1.9 wall. Match your liquid's specific gravity against the 25,354 lb ceiling before you fill, and run the numbers through our Tank Sizing Calculator or the Tank Sizing Guide so the trailer and axle ratings are sized to the loaded tank, not the empty one. Because this is a leg tank built for transport, also confirm your tie-down plan against the DOT non-roadable trailer scope for applicator and leg tanks and the 49 CFR 173.5 agricultural exemption for portable utility tanks.

Chemical compatibility

The source data lists the resin as HDLPE pending confirmation, so confirm the exact resin grade - HDLPE versus XLPE - with us at 866-418-1777 before putting this tank into chemical service, since that distinction drives which chemicals it can safely hold. Per the Enduraplas chemical-resistance chart, which is concentration- and temperature-specific, this tank handles a wide range of solutions when paired with the correct fittings and gaskets. The aggressive oxidizers and strong acids below need an upgraded elastomer - Viton or CPVC - rather than the default EPDM/PVC, so group them separately and do not reuse a standard EPDM gasket on them:

• 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
• Phosphoric Acid (85%) - PVC fittings, Viton gaskets
• Sodium Hypochlorite (<16.5%) - PVC fittings, Viton gaskets
• Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
• Peracetic Acid (30%) - 316SS fittings, Aflas gaskets

The remaining solutions run on PVC, PP, or stainless fittings with EPDM gaskets:

• 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
• Magnesium Chloride (30%) - PVC fittings, EPDM 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 Thiosulfate (40%) - PVC fittings, EPDM 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

The mistake to avoid on a tank like this is matching the gasket to the wrong chemical: the right wall resin paired with the wrong elastomer is still a failure waiting to happen. Always cross-check your exact chemical, concentration, and operating temperature against the OEM chart and our full chemical compatibility reference before ordering fittings.

Freight and ordering

This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP - there is no flat shipping figure because the LTL rate depends on your destination and accessorial needs. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it and confirm the right fitting and gasket package for your chemical. For blend-hauling specifics, our guide on fertilizer-blend tank stratification is worth a read before you spec the trailer. See the technical drawing on this page for fitting locations and overall dimensions.