Norwesco 1625 Gallon Black Heavy Duty Horizontal Leg Tank

The plumbing this record actually names

Outlet cell

2 inch PP female NPT bulkhead fitting. This is where a pump takes suction and it is the only port on the tank.

Manway cell

16 inch threaded vented. Fill point, access and vent in one closure.

Inlet cell

Empty. No piped fill connection is described anywhere on the record.

Grade line

1.9, with 25750 lb printed as the maximum contents figure.

The pump route on this body is short and it is worth planning before the tank arrives rather than after. Everything leaves through that 2 inch bulkhead, so the bulkhead sets the pace of every transfer you will ever do out of this tank; a bigger pump will not move product faster than the tank end of the line allows. Put the pump low and near the outlet, keep the suction run falling the whole way, and give yourself a union at the tank so the pump can come off for service without draining anything.

Nothing on this sheet names a valve, a strainer, a suction line size or a fitting on the pump end, and nothing names a fill connection either. That is the honest limitation of the record rather than of the tank, and the right response to it is a question rather than an assumption. Tell us the part number and the pump you intend to use and we will get the arrangement confirmed by the factory in writing before an order is placed.

Eleven and a half feet of tank for a fixed draw point

Duty first, because that is what the grade line describes. This record prints 1.9 with 25750 lb of maximum contents, which is a body published for holding a liquid denser than water, and the product application cell is blank so the sheet names no particular service. The buyer, then, is an operation that needs a decent working volume of something heavy sitting where it can be pumped from, and that has the floor length to give it.

Floor length is the point. 139 inches is a fraction over eleven and a half feet of ground committed in one direction, but the tank is only 63 inches across and 68 inches tall, which is under six feet in both. That profile is what makes a long leg tank attractive in a building with a low eave, a narrow bay or a line of tanks along one wall: you can stand beside it, see over the top of it, reach the manway off a single step, and still have 1625 gallons in the room. A vertical of the same volume would take back most of that headroom.

One thing the record does not publish is any product application text at all, and that is the limitation to be straight about: this sheet describes a container and its limits, not a service. The install specific that matters most on a body this long: support the full 139 inches evenly. A long horizontal tank that bridges a low spot in the middle of a pad puts the whole load into its end supports, and unlike a level problem on a short tank, this one is invisible until it is not. Run a string line the length of the pad before the tank is set. If you are still sizing, the volume calculator and the sizing guide are the free tools for that part.

1625 gallons, four ways

Four rows, one 139 by 63 by 68 inch shell, three different weight cells between them: 514 lb on this record, 449 lb on 40830, a blank on N-40026 and 514 lb again on N-40133. The sheet prints those figures and does not reconcile them, so neither do we. The words in each name are the maker's and we are not going to translate them into a claim about wall, life or duty that the cells do not carry.

The cells that do separate this row from 40830 are the grade line, the warranty term and the weight. This record prints 1.9 and a five year term; 40830 prints the lower grade figure and the shorter term. Read both listings before ordering, because on gallons and on dimensions they are indistinguishable and on those three cells they are not.

Either side of the shell, 42335 puts 1325 gallons into a body only 99 inches long, which is the row for a shorter floor, and N-42990 puts 1800 gallons into 146 inches at the same 68 inch height, which is the row for more volume without more headroom.

Want the certified one or the plain one? Call 866-418-1777 and say what the inspector asks for; or request a quote on the row you need.

The 1.9 line and the 25750 lb ceiling

Two mass figures and a temperature are the working specification of this tank. Maximum contents prints as 25750 lb beside a grade line of 1.9; water in the same shell prints as 13552 lb at 8.34 pounds per gallon; the ceiling is 120 F / 48 C. Those go on the purchase requisition exactly as they appear here, and none of them has been calculated, adjusted or compared against another part number.

What they do not settle is whether a specific liquid belongs in a polyethylene body at all. A mass figure is about mass. Compatibility is a separate question with a separate answer and it deserves to be asked properly rather than inferred from a weight cell; ask us and we will go and find out rather than guess.

For reading around the subject: our piece on why a heavy blended liquid stratifies in a standing tank and how to verify a load before it goes out is directly relevant to anything filling this body. Our guide to the way the leg and applicator ranges are divided up and what sits in each explains the catalogue around this record, and our article on portable loaf-style utility tanks and how a working fleet handles them covers the movable end of the range.

Chemical service ratings

The resin is rated for the liquids below at the concentrations shown; the fitting and gasket called out are the ones to order with the tank. Verify the exact service on the linked page or in the chemical compatibility database before ordering.

• Acetic Acid (60%, PP/PVC fittings, EPDM gaskets)
• Aluminum Sulfate (50%, PVC, EPDM)
• Calcium Chloride (40%, PVC, EPDM)
• DEF (32.5%, 316SS fittings, EPDM)
• Ethylene Glycol (100%, PVC, EPDM)
• Ferric Chloride (50%, PVC, EPDM)
• Ferric Sulfate (60%, PVC, EPDM)
• Ferrous Sulfate (20%, PVC, EPDM)
• Hydrochloric Acid (37%, PVC, Viton)
• Hydrofluoric Acid (48%, PP/PVC, Viton)
• Hydrofluosilicic Acid (26%, PP/PVC, Viton)
• Hydrogen Peroxide (50%, PVC, Viton)
• Magnesium Chloride (30%, PVC, EPDM)
• Peracetic Acid (30%, 316SS, Aflas)
• Phosphoric Acid (85%, PVC, Viton)
• Polyaluminum Chloride (PVC, EPDM)
• Potassium Carbonate (50%, PVC, EPDM)
• Potassium Hydroxide (saturated, PVC, EPDM)
• Propylene Glycol (PP/316SS, EPDM)
• Sodium Bisulfate (PVC/PP, EPDM)
• Sodium Bisulfite (PVC/PP, EPDM)
• Sodium Carbonate (30%, PVC, EPDM)
• Sodium Hypochlorite (
• Sodium Thiosulfate (40%, PVC, EPDM)
• Sulfuric Acid (98%, CPVC, Viton)
• Urea Solution (50%, PP/PVC, EPDM)
• Zinc Orthophosphate (PP/316SS, EPDM), and ozonated water (up to 10 PPM, PVC, EPDM). Note how the gasket spec shifts to Viton or Aflas on the oxidizers and stro

Washington Court House to your yard, 514 lb empty

One plant is named on 40834, Washington Court House in Ohio, and everything about the lane starts there. Freight class 300, mode LTL, 514 lb of tank across a 139 by 63 inch footprint, which again is a light load occupying a lot of trailer. The honest way to find out what that costs to your address is to run it: the freight cost estimator takes a ZIP and returns a number for this lane. The listed price is before freight.

Receive it along the top. A body this long shows its transit history on its upper surface, so before the straps come off, get up level with the deck and sight down the whole 139 inches from one end looking for a dip, a shine or a flattened line where a strap has bedded in. You are not looking for damage so much as for a shape that is not the shape it left the plant with, and that is far easier to see down the length of the tank than standing beside it.

The 514 lb on the bill of lading and the 514 lb on this page should be the same number before you sign anything. Keep one spare gasket for the outlet fitting on the shelf; it is the part that fails on a holiday.