11,000-gallon black storage tank built for heavy-duty industrial chemical containment. Manufactured by Norwesco from virgin linear polyethylene (HDPE) rated to handle liquids up to 15.8 pounds per gallon. Dual FDA and NSF 61 certified — one of the few tanks approved for both potable water and food-grade liquid storage.
The 11000 Gallon Black Heavy Duty Vertical Storage Tank is designed for municipal water systems, large-scale agricultural operations, and industrial facilities requiring bulk storage capacity. At 11,000 gallons, this is a facility-scale tank built for operations that measure liquid consumption in thousands of gallons per day. It is the anchor of heavy-duty industrial chemical containment systems for municipalities, large farms, and industrial plants.
Constructed from virgin linear polyethylene (HDPE) using a single-piece rotational molding process that eliminates seams, weld lines, and potential leak points. The 1.9 specific gravity rating means this tank is built with significantly heavier wall sections than a standard water tank — necessary to safely contain liquids weighing up to 15.8 pounds per gallon. That extra wall thickness is not optional when you are storing aggressive industrial chemicals. UV-resistant black pigmentation provides maximum outdoor durability and inhibits algae growth in stored liquids. Maximum operating temperature is 120° F / 48° C, with UV stabilizers compounded directly into the resin for outdoor service life.
This tank measures 167 inches tall with a 144-inch diameter, requiring 113.1 square feet of level ground. Empty weight is 2900 pounds. At full capacity with a 1.9 SG liquid, expect approximately 177,206 pounds on the foundation. Requires an engineered reinforced concrete foundation designed by a structural professional for the full loaded weight. Large tanks require professional installation. Ensure the pad is level within 1 inch across the full diameter and that all piping connections allow for thermal expansion.
Comes equipped with a 3" PP Female NPT Bulkhead Fitting w/ 2" Reducer NPT outlet fitting installed at the factory. No inlet fitting is included — drill and install a bulkhead fitting at your preferred height for your specific plumbing layout. The 22" Threaded Vented Manway lid opening provides ample access for interior inspection, cleaning, and installation of float switches, level sensors, or submersible pumps. Install schedule 80 PVC or stainless steel piping on all 3" NPT connections. Full-port ball valves, expansion loops for thermal movement, and proper pipe support are essential at this scale.
Norwesco is the largest manufacturer of rotationally molded poly tanks in North America, operating over 20 manufacturing plants across the U.S. and Canada. Every tank is produced from proprietary resin formulations and backed by decades of rotomolding expertise. Backed by a 5-year manufacturer warranty from Norwesco against defects in materials and workmanship under normal use conditions. FDA approved for contact with potable water and food-grade liquids. NSF/ANSI 61 certified for potable water system components. Every tank is inspected before it leaves the production floor — and we inspect it again before it ships from our facility.
- 11,000-gallon capacity — sized for heavy-duty industrial chemical containment
- Constructed from virgin linear polyethylene (HDPE) with 1.9 specific gravity rating — handles liquids up to 15.8 lbs/gal
- 167" tall x 144" diameter — compact vertical footprint
- 2900 lbs empty, approximately 177,206 lbs when full at rated specific gravity
- 3" PP Female NPT Bulkhead Fitting w/ 2" Reducer NPT outlet fitting — factory installed and leak-tested
- 22" Threaded Vented Manway lid opening for fill, venting, and interior access
- FDA approved for potable water and food-grade liquid contact
- NSF/ANSI 61 certified for drinking water system components
- 5 Year Warranty from Norwesco against manufacturing defects
- UV-resistant black pigmentation provides maximum outdoor durability and inhibits algae growth in stored liquids
- Rated for continuous service up to 120° F / 48° C
- Seamless one-piece rotational molding — no seams, no welds, no leak points
- Manufactured by Norwesco — a leading name in rotomolded polyethylene tanks
- Large tanks require professional installation. Ensure the pad is level within 1 inch across the full diameter and that all piping connections allow for thermal expansion
- Ships via dedicated freight carrier due to oversized dimensions — contact us for delivery timeline and site access requirements
