Snyder Industries 250 Gallon Sodium Hypochlorite (UV) Vertical Storage Tank

Sun, heat and a tank that has to stand outdoors

Pick the spot on the site before you pick anything else, because on this duty the location does more for the liquid than the tank can. Hypochlorite loses strength faster warm than cool and faster in light than in dark, so the pad that matters is the shaded one: the north side of the building, under the canopy, inside the chemical room rather than behind it. A tank 83 inches tall needs a 96 inch ceiling to take a vent and a fill above the manway, which is the measurement that decides whether the sheltered spot is actually available. Wherever it lands, the ground is engineered rather than assumed. The 1.9 rating allows 3,962 pounds of contents and plain water alone puts 2,085 pounds on a 34 inch circle, and a rotationally molded floor bears on the whole floor, so the slab follows the concrete pad sizing guide, level and in full contact, inside containment sized to the tank, which for a disinfection chemical is usually the local requirement and not a choice. Nearly seven feet of empty shell on a base under three feet across is a tall, light thing in the wind, so it is banded to structure or to slab anchors before the first fill and checked after the first storm. The white wall reads the level through daylight, which on a liquid that is dosed every day is worth more than it sounds, and it also runs cooler in the sun than a dark shell, which is the point of the colour here. Size the volume against the dose rate and the delivery interval in the tank sizing calculator, keeping the hold time short on purpose, and take the reserve and the freeboard from the tank sizing guide.

One tall shell, and the general-purpose tanks around it

The reason to buy this one rather than a general-duty tank of the same volume is the name on the sheet: it is the molding Snyder lists for hypochlorite service with ultraviolet protection, and on a liquid that degrades in light that is the specification, not a preference. Three other walls share this 34 by 83 inch shell, listed separately and each rated as its own sheet says: one named for an acid duty, one black cross-linked wall carrying a higher service limit, and one general-duty black tank. Any of the 1008100 tanks in the table holds the same 250 gallons in a shorter, slightly wider shell for a room with a low ceiling and a general-purpose liquid. The 1012900C26 is the smaller pour on that base and the 5740100N42 the larger one, wide and squat at 47 inches across.

Found the 250 gallon tank in the table? Freight to your ZIP is one click; add it to your cart above, or call 866-418-1777 to check the grade.

No bottom fitting on the sheet: the lid is the listed opening

• Outlet: the sheet's outlet field reads "1 Manway / Lid" and it lists no bulkhead size. We print the field rather than invent a diameter. Name the chemical, the strength you buy and the draw-off you want at order, and we confirm what this molding accepts and in what material before anything is cut.
• Listed opening: a 14 inch threaded, vented manway at 83 inches. Reaching it means a fixed platform with a rail or a tied-off platform ladder, and a permanent fill line landed at the manway is better practice than a driver wrestling a hose overhead in the dark.
• Vent, which on this duty is the fitting that earns its keep: hypochlorite gives off gas as it sits and warms, so the vent is piped outdoors, kept clear, sized to the delivery pump rather than the tank port, and looked at every single time the manway is opened. A blocked vent on a gassing liquid is how a tank gets hurt.
• Fill: a dip tube to the floor so the incoming stream does not cascade the height of the shell, which strips strength out of the liquid and coats the headspace. Service limit: 120 F / 48 C. Warranty: 3 year.

Anything plumbed at the base is supported off the pad on its own stand with a flexible connector between the tank and hard pipe, because a rigid run bolted to the shell feeds every bit of thermal movement and pump vibration back into the wall. Inspection on this liquid is a headspace job: the band of wall above the liquid line and the underside of the manway cover see the gas, so that is where the light goes, on a schedule, with the date written down. Keep the manway threaded shut between deliveries, label the wall with the one chemical inside in letters readable from the truck cab, and gauge by eye through the white wall as a cross-check on whatever the panel says.

Disinfection inventory that degrades while it waits

Municipal water and wastewater disinfection is the duty this tank is named for, and it goes to the same places in smaller form: a lift station, a well house, a package treatment plant, a pool or aquatics plant, a food plant sanitation room, and a cooling tower dosing skid. In every one of them the tank is not really storage, it is a buffer, and the operating rule is to buy what you will use and to keep the hold short, cool and dark rather than to fill a big tank once a season. Our article on hypochlorite outgassing, degradation and cooled storage architecture is the one to read before this tank is plumbed: it covers how fast strength falls with temperature and hold time, why the vent arrangement matters more here than on almost any other liquid, and what a cooled storage arrangement buys a plant that has to hold inventory anyway.

Nebraska origin, and the first fill before any chemical

The sheet gives class 300 and 75 pounds shipping weight from Lincoln, Nebraska. A tall, light parcel prices on the deck space it occupies and not on the scale, so put your ZIP into the freight cost estimator and read the listed price as before freight. Unloading is two people or a pallet jack, straps under the body, never a sling through the manway, and the tank sets down on the cured pad inside its containment rather than on a staging slab. Then water, and on this duty water twice over: fill it to the manway, hold it long enough to walk the base and the containment floor twice, drain it, and dry it out completely, because a hypochlorite delivery into a damp tank is a strength loss on day one. Photograph the tank full, on its pad, before the plumbing goes on; that picture is the baseline every later inspection gets compared against. Check the strap tension a week after the first fill; a tank settles a little, and the strap that was tight is loose.