The Enduraplas 1200 Gallon Yellow Horizontal Leg Tank (SKU THF01200Y) is a 1.9 specific-gravity polyethylene transport tank built for heavy agricultural and industrial liquids that have to move. It holds 1200 gallons in a 102-inch long by 70-inch wide footprint at a 59-inch height, sitting on integral legs so it can ride a flatbed, gooseneck, or skid from field to field. The 1.9 SG rating is the number that defines this tank: it is engineered for liquids far heavier than water, which is why it surfaces under searches like Enduraplas horizontal leg tank, yellow horizontal tank, and horizontal leg tank.
Will it work for your liquid?
On a horizontal leg tank, the weights and the footprint decide everything. Filled with water this tank carries 10,008 lb of contents; at its maximum rated contents weight it carries 19,015 lb, and that headroom is exactly what the 1.9 SG rating buys you for dense fertilizer blends and heavy chemicals. Spread that 19,015 lb of load across the 70-by-102-inch footprint and you can check both your total axle rating and the point loading at the legs against the trailer deck before you ever fill. Note that no fittings are pre-specified on this tank, so the fitting and gasket callouts below are what you source and confirm, not what ships installed. See the technical drawing on this page for port locations, then run your capacity and towing numbers through our Tank Sizing Calculator and the Tank Sizing Guide.
Chemical compatibility
This is a polyethylene tank rated at 1.9 specific gravity. The resin is listed as HDLPE but flagged for confirmation, so confirm HDLPE versus XLPE before putting it into chemical service, since the cross-link choice changes what the shell will hold over time. Per the OEM chemical-resistance chart, compatibility is concentration- and temperature-specific; verify your exact concentration and operating temperature before committing, and match the fitting and gasket to the chemical, not just to the tank.
- 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 (<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
For the full method behind matching resin, SG, fittings, and gaskets to your liquid, start at our chemical compatibility hub.
The mistake to avoid
The most common error on a 1.9 SG transport tank is matching the fitting to convenience instead of the chemical. Standard EPDM gaskets cover most of the list, but watch the exceptions: Viton is called for on hydrochloric, hydrofluoric, hydrofluosilicic, phosphoric, and sulfuric acids plus hydrogen peroxide and sodium hypochlorite; peracetic acid steps up to Aflas gaskets; DEF and peracetic acid require 316 stainless fittings; and sulfuric acid moves up to CPVC. Pair the wrong gasket and you get a slow leak on a tank that is bouncing down the road full. Pair it correctly, confirm the HDLPE-versus-XLPE resin question first, and this tank will carry dense loads season after season. If you are hauling fertilizer blends, read up on tank stratification and the mixing protocol that catches a stratified tank, and how leg tanks fit the applicator and DOT non-roadable trailer scope.
This tank ships LTL freight from the plant in Neche, ND, quoted live to your ZIP. Get your number in seconds with our Freight Cost Estimator, or call 866-418-1777 to lock in your order and confirm the resin and fitting package for your liquid.
