Snyder Industries 360 Gallon HDPE Vertical Liquid Storage Tank with ASTM Certification

The biggest squat day tank, certified

Three hundred sixty gallons is a tote and a half, and a 53 inch base under 59 inches holds it where a tall tank of the same volume would not; the wide base cannot tip, keeps a pump's suction flooded to the last few inches, and puts the manway where a wash-down wand reaches the whole floor at changeover. The wall is rated for nearly twice the density of water and certified under ASTM D1998, which is the standard these tanks are specified to; the HDPE tank wall thickness guide explains the D1998 sizing logic and why the vapor headspace is where a wall fails first, and the freeboard sizing guide works out how much of the nominal 360 gallons is usable once thermal expansion is accounted for. Full, it puts 5,705 pounds on a 53 inch circle at the rating; a paver pad or a slab in full contact carries that, and the concrete pad sizing guide covers a shared slab. The tank sizing calculator sizes a day tank to the pump's rate and the refill schedule, and the tank sizing guide covers the reserve.

Grades on the 53 x 59 inch tank, and the sizes beside it

The N42 is cross-linked polyethylene for hypochlorite and the other oxidizers, and the N48 and N51 are other linear grades, all at this tank's weight in the same shell. The 1008200N45 and 5750100N45 are the certified 330s on a 47 inch base, squat and tall, and the 1740000N48 holds 400 gallons on a 45 inch base 3 inches taller.

Height or floor the limit? The table has both shapes; freight to your ZIP is quoted on each row, or call 866-418-1777 with the site.

Connections

• Access: 18 inch threaded, vented manway at chest height; fill by hose or tote pump down a dip tube, and vent to the outside if the liquid fumes.
• Outlet: tell us the chemical when ordering and the bulkhead fitting is matched to it; run a flexible line to the pump suction and hang the valve off the floor, not the tank.
• Service limit: 120 F / 48 C.
• Listing: ASTM certification.

A white tank shows its level in daylight; a float switch for low level protects a pump. Mount the dosing pump below the outlet so it primes by gravity, keep the manway closed against vapor loss, and keep the tank out of direct sun where the chemical is light-sensitive. A 53 inch tank fits a standard spill pallet.

What it holds in practice

Day tanks at small water systems with a low ceiling, chemical feed skids, polymer make-down at a package plant, brine for a softener bank, and, with water in it, a well buffer or one cell of the small reserve the fire-water reservoir design guide describes. One chemical to a tank, a label on it, and a rinse at every changeover.

Getting it to the pad

The 5760100N45 ships palletized as LTL freight (NMFC 156600-02) at a class rate; the freight cost estimator turns your ZIP into a freight number; the price on this page is before freight. Two people carry 116 pounds, and at 53 inches across it needs a wide door. Check the manway and the outlet fitting, fill it once with water to prove the seal, and keep the certification paperwork with the project file. Once it is full and holding, leave it alone for a day before the plumbing goes on; a settled tank is a quiet one.