The Snyder Industries 4000 Gallon HDPE Vertical Liquid Storage Tank is a 4,000-gallon white polyethylene vertical storage tank built to a 1.9 specific-gravity rating, which means it is engineered to carry contents up to 1.9 times the weight of water. For straight water service, that rating is a wide safety margin. Filled with water, the tank holds roughly 33,360 lb of contents; at its full 1.9 SG rating it is rated for up to 63,384 lb of contents, so you have real headroom for heavier liquids if your service ever changes. This Snyder vertical tank stands 100 inches tall on a 120 x 120 inch footprint, so confirm your pad and overhead clearance before ordering.
Will this Snyder vertical tank work for your site?
This is a single white HDPE vertical storage tank from Snyder Industries, carrying a 1.9 specific-gravity rating. The white wall lets you read the liquid level through the tank in daylight, which most outdoor and indoor water installations prefer. The technical drawing on this page shows the fitting layout: a flange, an 18-inch PE threaded and vented fitting, and a manway with 15-inch access. The flange gives you a discrete outlet connection point to plan your plumbing tie-in around, so you can lay out your fill and draw lines before delivery. The 18-inch PE threaded and vented fitting matters for a vented atmospheric tank - it lets the tank breathe as it fills and drains rather than pulling a vacuum or pressurizing on a fast cycle. The 15-inch manway access gives you a route in for cleaning and inspection. Run your sizing through the Tank Sizing Calculator and Tank Sizing Guide if you are still settling on capacity, and see the 4000 Gallon Vertical Liquid Storage Tank buyer's guide for the full rundown.
Weight, foundation, and the mistake to avoid
The number that catches people is the loaded weight. Empty, the tank is light enough to set by hand-equipment; full of water it is moving 33,360 lb, and a fully loaded 1.9 SG service approaches 63,384 lb of contents. The most common mistake on a tank this size is pouring or reusing a pad that is not flat and fully supporting the entire base. A vertical polyethylene tank needs continuous, level support across the whole footprint - any high spot, gap, or slope concentrates stress into the wall and shortens service life. Hand your concrete contractor a concrete number: the pad must carry up to about 63,384 lb of contents over the 100-square-foot (120 x 120 inch) footprint. Get the pad right first, then confirm your plumbing supports the tank rather than the tank supporting the plumbing. For the engineering behind wall thickness and ASTM D1998 sizing on tall HDPE verticals, see our guide on HDPE tank wall thickness and ASTM D1998 sizing logic.
Heavier-than-water service and freeboard
The 1.9 SG margin makes this vertical tank suitable for fire-water reservoirs and other heavier-liquid duties beyond bulk water storage. Two cautions if you go that route. First, the 1.9 SG rating governs the tank wall - the wear points on heavier or more aggressive contents are the fitting gaskets, seals, and the threaded and flanged connections, so verify those are rated for your specific service before you commit. Second, the 4,000-gallon figure is the rated fill; heavier-than-water service needs freeboard sizing rather than filling to the brim, walked through in our Snyder freeboard sizing per ASTM D1998 guide. If you are sizing a private fire-protection supply, our fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection for a polyethylene tank in that role.
This vertical storage tank ships LTL freight from the Snyder plant in Chowchilla, California, and freight is quoted live to your ZIP - it is never included in the list price. Because this tank ships from a single West Coast plant, the distance to Eastern delivery points is the main freight cost driver, so get an exact number for your address before you budget. Get an instant rate with our Freight Cost Estimator, or call 866-418-1777 and we will quote the tank to your delivery point and walk you through fittings, pad prep, and lead time.
