Snyder Industries 12000 GALLON ASTM 1.35 SG IN BLACK

The Snyder Industries 12,000-gallon vertical tank (SKU SII-5350000N33) is a large-volume liquid storage tank built in black high density linear polyethylene, rated for contents up to 1.35 specific gravity at service temperatures up to 120 F (48 C). It stands 198" tall on a 142" diameter footprint, weighs 3,100 lb empty, and carries an 18" lid and a single 3" outlet. This is a bulk vertical made for stationary above-ground storage where you need serious capacity in one tank rather than a bank of smaller units.

Will it work for your site?

Sizing is where big verticals get people, so run the numbers before you pour a pad. Twelve thousand gallons of plain water weighs roughly 100,080 lb full; at the tank's full 1.35 SG rating, maximum rated contents reach about 135,108 lb — and that 1.35 SG and the 120 F ceiling are simultaneous limits, not either/or. That load sits on a 142"-diameter footprint, so the foundation carries a very high point load per square foot: this is a structural pad decision, not a gravel-bed decision. Even empty, the 3,100 lb shell on a 198"-tall by 142"-diameter profile needs a crane or heavy forklift to set, and a level, cured pad under it before you add a drop. Use the Tank Sizing Calculator and Tank Sizing Guide to confirm your volume, and read our walkthrough on concrete pad sizing for above-ground polyethylene tanks before you break ground. The 1.35 SG rating gives you real headroom above water's 1.0. For fire-reserve or reuse water programs, the fire-water reservoir design guide and the industrial water reuse topology guide show how a poly bulk tank fits the larger system.

The mistake to avoid

Two things to check before you order. First, this tank has a single 3" outlet — for a 12,000-gallon vessel that is a comparatively slow gravity discharge, so confirm one 3" connection meets your fill and draw rate before you commit. Second, on tanks this tall premature wear tends to start in the vapor-saturated headspace above the liquid line, not down where you inspect. The black HDLPE wall is built for that, but you should know where to look — our guide on HDPE wall thickness at the headspace explains why liquid-side inspection misses it. Respect the 120 F ceiling as well: sustained heat above that rating degrades polyethylene, so keep hot process streams off this tank. Check the technical drawing on this page to confirm the 3" outlet placement and 18" lid location line up with your plumbing and access before you set it.

Freight

This 12000 gallon Snyder Industries tank ships LTL from Snyder's plant in Lincoln, NE. Because of its size it moves as a dedicated freight item, quoted live to your ZIP — get your number with the Freight Cost Estimator or call 866-418-1777 and we'll set it up. Give us the delivery ZIP and any site-access details (limited-access, liftgate, or job-site) so the quote is accurate the first time.