The Snyder Industries 150 Gallon HDPE Vertical Liquid Storage Tank (SKU SII-5710100N45) is a 1.9 specific-gravity polyethylene vertical tank rotationally molded to ASTM D1998, with outside dimensions of 61 inches tall on a 34 x 34 inch footprint and a white body. It holds 150 gallons in a compact, corner-friendly stance, and its high 1.9 specific-gravity rating means it carries denser liquids than plain water without rerating the wall. This page covers what it handles, how it ships, and the one sizing detail worth checking before you order.
What this vertical tank handles
The 1.9 specific-gravity rating is the number to anchor on. Filled to 150 gallons of water, the contents weigh about 1,251 pounds; at the tank's maximum 1.9 SG rating, it is engineered to carry up to roughly 2,377 pounds of liquid. That headroom is why a high-SG vertical tank like this one suits heavier fluids, not just water. Fittings and access on this model include a flange, a 14-inch polyethylene threaded and vented fitting, and a manway with an 11-3/8-inch access opening for inspection and cleaning. That 11-3/8-inch access is the dimension to check against any pump assembly, hand, or cleaning tool you plan to pass through the top. See the technical drawing on this page for fitting locations and outlet placement before you plumb it. If you are matching this 150 gallon HDPE storage tank to a real-world fill volume rather than its nameplate, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide.
Specifying for a denser fluid
The 1.9 SG rating is the reason to choose this model over a water-only tank rated 1.0 to 1.5, because it accepts denser-liquid service without rerating the wall. Two things to confirm before you commit it to anything other than water. First, gasket and bulkhead-fitting materials are not specified here, so match them to your intended fluid rather than assuming the listed flange and 14-inch threaded fitting are universally compatible. Second, a higher specific gravity means you must leave freeboard, so the nameplate 150 gallons is not all usable volume once you account for thermal expansion and density head; our freeboard sizing guide per ASTM D1998 walks through the real volume you can actually use.
The mistake to avoid
The 34 x 34 inch footprint is deceptively small for a tank that can hold well over a ton of liquid when filled with a dense fluid. Size the pad, ring, or floor for the maximum rated contents weight of about 2,377 pounds, not the 1,251-pound water figure, and confirm the surface is flat and fully supporting across the whole base. Polyethylene vertical tanks rely on continuous bottom support; a tank set on an uneven or partial bearing surface concentrates stress at the base and shortens its life. For the engineering behind wall thickness and ASTM D1998 sizing, our guide on HDPE tank wall thickness and ASTM D1998 sizing logic walks through where premature failures originate and why liquid-side inspection misses them.
How it ships
This Snyder vertical storage tank ships LTL freight from the manufacturing plant in Marked Tree, Arkansas, and freight is quoted live to your ZIP code rather than included in the listed price. Get an exact number in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will quote it by phone. Have your delivery ZIP ready and we will get this Snyder HDPE tank routed to you.
