Norwesco 850 Gallon Vertical Heavy Duty Tank with Fitting 1.9 s.g.

The Norwesco 850 Gallon Vertical Heavy Duty Tank (SKU N-42523) is a standard vertical poly tank built for bulk water and process-liquid storage, with extra sidewall strength held in reserve.It carries a 1.9 specific gravity rating, so the wall thickness is engineered for liquids well above the density of water.At 48" diameter and 118" tall, it holds 850 gallons on a compact 48" round footprint, which matters when floor space is tight and you'd rather build up than out.

Will it work on your pad?

Empty, the tank weighs just 175 lb, so a small crew or a forklift can set it.The loaded weight is what your pad has to carry, and on this heavy-duty tank the range is wide:

• Empty: 175 lb
• Full of water (1.9 SG): ~7,089 lb
• Full at the 1.9 SG rating: ~13,469 lb
• Footprint: 48" diameter round

Size your concrete pad and anchoring for the actual liquid you're storing, not just water.If you're storing plain or process water at 1.0 SG, you're using only a fraction of the 1.9 headroom this tank is built for, so plan the pad around the real filled weight rather than the maximum rating.Run the numbers with our Tank Sizing Calculator and the Tank Sizing Guide, and read our framework on concrete pad sizing for above-ground polyethylene tanks before you pour.

Fittings, temperature, and the mistake to avoid

The tank ships with a 2" outlet and a 16" lid for access and gauging.Confirm both sizes line up with your plumbing and fill gear before you order, and see the technical drawing on this page for the fitting locations and overall dimensions.One number to respect: the maximum contents temperature is 120 F / 48 C.Warm process water above that ceiling derates a poly tank, so keep your hottest fill within it.And match your liquid's specific gravity to the 1.9 rating — a lighter liquid is fine, but pushing past 1.9 loads the sidewall beyond what it was built for.

Common uses

This is a heavy-duty 850 gallon vertical Norwesco tank for water and dense liquid storage — from process-water holding to fire-water reserve on rural and remote sites.If you're building a private fire-protection reservoir, our guide on NFPA 22 sizing discipline and cold-climate freeze protection covers how a poly tank fits the stack.For reclaimed-water setups, see our industrial water reuse tank topology breakdown.On a fresh install, pressure-test before you trust it in service using our hydrostatic test methodology.

This tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant — Griffin, GA; Hanford, CA; Shawnee, OK; or Washington Court House, OH.Get a freight number with our Freight Cost Estimator, or call 866-418-1777 and we'll route it from the closest plant and quote the freight for you.