7750 Gallon Plastic Water Storage Tank

Where 7750 gallons goes

This is a reserve measured in weeks for a household, a working rainwater volume for a large commercial roof, a truck fill station, or a private fire supply that gives a rural department something to draft from. The fire water reservoir design guide explains the volumes departments look for, the draft connection and how to keep a tank this size from freezing through in a hard winter. At 122 inches, just over ten feet, the manway needs a fixed ladder, and the float valve belongs on the inlet line where it can be serviced from the ground. The 144 inch circle, twelve feet across, must sit on a flat, level, continuous slab carrying 64,635 lb of water plus the tank; the concrete pad sizing guide explains how to size it, and at this weight the slab is not the place to save money. For rainwater, grey water and condensate reuse on a commercial site, the water reuse storage guide covers how the trains are laid out and where bulk storage sits in them. If you are choosing between one big tank and two smaller ones, one tank is one slab and one set of fittings, but two tanks let you drain and clean one while the other stays in service; the tank sizing calculator and the tank sizing guide help with the volume side of that decision.

Openings and fittings

1. Outlet. A 2 inch polypropylene female NPT bulkhead fitting low in the wall. For a fire draft connection or fast truck filling, 2 inches is on the slow side; tell us the flow you need before the tank ships. Support the valve and the pipe on their own.
2. Inlet. A 1-1/2 inch polypropylene female NPT bulkhead fitting for the fill line from a pump or a roof drain system.
3. Manway. A 22 inch threaded vented manway on top, wide enough to work through, and the tank's vent.
4. Rating. 1.1 specific gravity, a maximum of 9.18 lb per gallon. Water. Liquid fertilizers are heavier and need a tank rated 1.5 or higher. Keep contents under 120 F.
5. Drawing. Norwesco's drawing for this tank, linked under Technical Drawing on this page, shows the fitting heights and the manway position for your pipe plan.

Sizes nearby

One step down on the same 144 inch footprint: the wide 6500 class vertical water tank. One step up: the 10000 gallon dark green vertical water tank. The colour swatches above the price switch between the versions of this tank.

Shipping and receiving

A 144 inch tank is a wide load. It ships as an oversize shipment on a flatbed, freight class OVS, 1208 lb shipping weight, from Norwesco's Hanford, California plant, and the carrier needs a site a flatbed can reach and turn in. The listed price is before freight; the freight cost estimator gives the lane cost to your ZIP, or request a written quote for the job file. You need a telehandler or a crane to lift it off and set it; plan the rigging before the truck arrives. At the tailgate, check the part number against 44123 on the bill of lading, walk round the shell for transit damage, set it on the slab, and run the water fill acceptance test before it carries anything else.

Questions before you order? Call 866-418-1777.