Snyder Industries 550 Gallon XLPE Vertical Liquid Storage Tank

What cross-linking buys

Linear polyethylene is a thermoplastic that softens with heat and creeps under sustained load; cross-linked polyethylene is molded with a catalyst that ties the polymer chains into one network, so it holds its shape under load, resists the stress cracking oxidizers cause, and tolerates higher temperature. The trade is that it cannot be plastic-welded, so fittings are bulkhead or bolted and a damaged wall is replaced rather than repaired. The 550 gallon vertical tank buyers guide compares the class across makers and resins; the tank sizing calculator sizes the volume to feed rate and delivery interval, and the tank sizing guide covers the reserve. Full, the tank puts 8,715 pounds on a 48 inch circle at the rating; a slab, a paver pad or compacted gravel in full contact supports that, and the concrete pad sizing guide covers a shared slab.

Resins on the 48 x 75 inch shell

The C34 is the linear-resin twin at the same weight, for milder chemicals and a lower price. The black C26 adds 30 pounds of wall and blocks light. The other two cross-linked tanks are the sizes on either side: the 5780100N42 at 500 gallons on a 53 inch base with a heavier wall, and the 1700200N42 at 710 gallons under a 68 inch ceiling.

Picked the 550 gallon tank? Add it to your cart above; freight is quoted to your ZIP before you pay anything.

Access and outlet

• Outlet: 2 inch, at the bottom of the sidewall; a bulkhead adapter, a flexible transition, and a valve supported off the floor. XLPE cannot be welded, so decide any added port before the tank is filled.
• Access: 18 inch threaded, vented manway; vent outside on hypochlorite, acid and caustic.
• Service limit: 140 F / 60 C.

A white 75 inch tank shows its level in daylight; in a pump room, a sender chosen for the chemical, since hypochlorite is hard on wetted parts. Mount the dosing pump below the outlet so it primes by gravity, and give the vent a line routed away from the pump's electrical gear.

Put to use

Hypochlorite day tanks at small water systems, acid and caustic make-up tanks on skids, and any 550 gallon vessel where the chemical would attack a linear wall in a season. With water in it, one cell of the fire reserve the fire-water reservoir design guide describes, or the storage stage of a small reuse system, per the industrial water reuse tank topology article. Hypochlorite degrades with heat and time, so a tank sized for a season wastes chlorine; buy small lots often, and shade the tank.

How it ships

The 1800000N42 ships palletized as LTL freight (NMFC 156600-02) at a class rate; the freight cost estimator shows it for your ZIP, and the listed price is before freight. Two people carry 110 pounds through a door. Water-fill to the manway and hold it before the first chemical goes in, and confirm the outlet and manway are dry after the hold. A strap that is checked once a season is a strap that holds; put it on the same calendar as the gutters.