The Enduraplas 800 Gallon Black Horizontal Sump Bottom Leg Tank is a frame-mounted polyethylene horizontal leg tank built for moving liquid - hauling water and chemicals across a property or down a field road on a nurse rig. The black polyethylene shell measures 94 inches long, 60 inches wide, and 56 inches high, and the integrated frame and legs give the tank a stable base so it can be strapped to a skid, trailer, or truck bed. The sump bottom slopes contents toward a low drain point so the tank empties out almost completely - the detail that keeps dense fertilizer blends and chemistry from stranding and stratifying in a flat-bottom hull. Rated to a 1.9 specific gravity, this is a heavy-service horizontal leg tank: it carries the weight of dense fertilizer blends and acids, not just water.
Will it work for your load?
Filled with water (specific gravity 1.0), this 800-gallon tank holds roughly 6,672 pounds of contents. At its full 1.9 SG rating, the same volume can carry up to about 12,677 pounds - that headroom is what lets a horizontal leg tank like this one carry the heaviest products on the compatibility list, not just clear water. The 1.9 rating is the heavy-duty ceiling for this size and type; match your liquid's specific gravity against it before you fill, and if your product runs heavier than 1.9, this tank is not rated for it. The 60 x 94 inch footprint is the number to check against your trailer deck or skid frame before you commit. Use the Tank Sizing Calculator and Tank Sizing Guide to confirm the volume and loaded weight work for your application.
Chemical compatibility
This is an Enduraplas polyethylene tank rated to 1.9 specific gravity. The resin generation is listed as HDLPE pending confirmation - confirm HDLPE versus XLPE with us before putting any chemical into service, because crosslinked and linear polyethylene behave differently with aggressive oxidizers and acids. Always verify your exact chemical, concentration, and operating temperature against the manufacturer's chemical-resistance chart, which is concentration- and temperature-specific. Below are chemicals shown as compatible with this tank, with the fitting and gasket materials called out for each:
- 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
Do not default-spec every port to PVC. The fitting and gasket call changes by chemical: DEF (32.5%) and peracetic acid (30%) need 316 stainless rather than PVC, peracetic acid also takes an Aflas gasket - the only Aflas call in the set - and 98% sulfuric acid needs CPVC, not standard PVC. On gaskets, EPDM covers most salts and glycols, while Viton handles the strong acids and oxidizers like sulfuric acid, hydrofluoric acid, and sodium hypochlorite. Matching the wrong elastomer is the quietest way to ruin a chemical install, so build your fittings to the material shown for your product. See the full picture on our chemical compatibility hub, and remember every rating is tied to a specific concentration and temperature.
The mistake to avoid
The trap on a 1.9 SG horizontal leg tank is loading it like a water tank and ignoring the loaded weight. A tank that weighs 6,672 pounds full of water can reach roughly 12,677 pounds at its rated maximum contents - that is the figure your trailer, axles, tie-downs, and tow rating have to handle, not the empty tank weight. Check the 60 x 94 inch footprint against your trailer deck AND that loaded number against your freight class with the Freight Cost Estimator. Size the rig to the loaded weight, secure the frame properly, and confirm the polyethylene generation (HDLPE vs XLPE) with us before any chemical fill. Whether you run it as a fertilizer nurse tank or a chemical haul tank, plan the route and trailer to the full weight. Our background on applicator and leg tanks for fertilizer, portable utility tanks and the 49 CFR 173.5 agricultural exemption, and fertilizer-blend tank stratification covers the DOT and mixing details that matter for field fleets.
This Enduraplas horizontal leg tank ships LTL freight from Neche, North Dakota, quoted live to your ZIP code. Get your freight quote in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will quote the freight and confirm the resin and fittings for your liquid before you order.
