13,000 gallons on a 30 degree cone, 142 inches across
The Snyder SII-7490100N43 is a 13,000 gallon cone bottom tank in white linear polyethylene, 142 inches in diameter and 238 inches tall overall, weighing 3,660 pounds empty. The product name gives the cone as 30 degrees; the sheet's own cone angle field is blank, so that figure is cited from the name and nothing further about the cone is asserted. What a cone bottom does is drain itself. A flat bottomed tank keeps its last inches and its solids; a cone carries both to a single low point, so the vessel empties completely, cleans between batches, and does not build a bed of settled material that ends up in a pump or a spreader. The wall is rated at a specific gravity of 1.9, giving 108,420 pounds for 13,000 gallons of water at 8.34 pounds per gallon and 205,998 pounds of maximum contents. Access is an 18 inch threaded vented manway, the service limit is 120 F / 48 C, and the sheet states a 3 year warranty.
Know your ZIP and your ceiling height? Freight to your ZIP takes seconds, and 866-418-1777 will confirm the height; then add it to your cart above.
Where 13,000 gallons has to stand: a 142 inch circle, 238 inches of height
A cone bottom tank cannot stand on its own bottom, and that is the first fact to plan around. The whole vessel has to be carried in a supporting structure that holds the cone clear of the ground, and this sheet publishes no stand, no frame, no legs, no anchor pattern and no support detail of any kind, so nothing of that sort is described or promised on this page. What it does publish is the envelope you have to build for: a circle 142 inches across, which is 11 feet 10 inches, and an overall height of 238 inches, which is 19 feet 10 inches. Then there is the load. At full the sheet gives 108,420 pounds of water, and 205,998 pounds of maximum contents at the rating. That is not a slab question, it is a foundation question, and it should be in front of an engineer before anything is ordered: the framework for the pad itself and the boundary where a slab on grade becomes a designed structural element are worth understanding before that conversation, and the tank sizing guide covers the freeboard and reserve side of the same decision. The site questions after the foundation are the ones people forget. Nineteen feet ten inches of tank needs access above it for the manway and clearance around it for a crane on the day it is set. The discharge point under the cone has to reach whatever it feeds, which usually means a pump, a load-out hose or a truck lane underneath, and the height of that lane is decided by the stand structure and not by the tank. Wind, snow and seismic loading on a vessel this tall are site-specific and belong to the structural design, not to a product page. Size the charge against the process first, in the tank sizing calculator, because a 13,000 gallon vessel is an infrastructure decision that will outlast several plant managers.
Two 13,000s and an 11,500 on the same 142 inch circle
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| SII-7490100N43 (this tank, 30 degree cone) | 13000 | 142 x 238 in | 3660 lb |
| 7490100N49 (same size, lighter listing) | 13000 | 142 x 238 in | 3250 lb |
| 5340100N40 (smaller, cross-linked wall) | 11500 | 142 x 215 in | 2850 lb |
All three vessels stand on the same 142 inch circle, so the site work does not change between them and the choice is made on height, wall and weight. This tank and 7490100N49 are listed at identical dimensions and identical volume, 142 by 238 inches at 13,000 gallons, and differ only in the empty weight the sheet publishes: 3,660 pounds here against 3,250 pounds there. What we will say is that on a vessel of this size the empty weight is a rigging number, and the rigging plan should be built on the figure for the part number you actually buy. 5340100N40 is the smaller vessel, 11,500 gallons at 142 by 215 inches and 2,850 pounds, with a cross-linked polyethylene wall where this one is linear. That is a genuine fork rather than a size step: cross-linked is the wall to specify when the chemistry or the service is hard on a tank, and it comes here with a shorter overall height, which can matter under a roof or a crane hook. Note also that the sheet spells those two siblings without the SII- prefix that this part carries, and we quote them as the sheet does rather than tidying them up. Before you settle on the cone at all, the cone bottom tank buyers guide compares the 15, 30 and 45 degree cones against what is actually in the tank, and it is the piece to read if your product settles, cakes or bridges.
Need two of them? Request a written quote for the pair with freight to your ZIP, or call 866-418-1777 and we will price the truck once.
The outlet the sheet does not give, and the 18 inch vented manway it does
- The discharge: this sheet publishes no outlet fitting for the cone, so no size, no valve and no flange is named here. On a vessel of this volume the discharge is engineered with the stand and the downstream plumbing anyway, and we will confirm the arrangement with the maker in writing against your application before anything is ordered.
- What the cone is doing: the 30 degrees named in the product title is what moves settled material to the low point instead of leaving it on a floor. That is the reason to buy a cone rather than a flat bottom, and the reason the discharge valve deserves more thought than the tank: it is the one component the whole contents has to pass through, and a valve sized for convenience becomes the plant's bottleneck on every batch.
- Access: an 18 inch threaded vented manway. Vented is the important word. It means the tank has a defined breathing path, and that path must stay clear for the life of the vessel, because filling and drawing 13,000 gallons moves a great deal of air.
- Entry: an 18 inch manway on a vessel this size is an access opening, and any entry into it is a permit-required confined space job with all the procedure that implies. Plan cleaning and inspection so that entry is rare, which is another argument for the cone.
- Fill and level: bring the fill in at the top and take the level reading where the operator stands rather than where the tank is convenient. On 19 feet 10 inches of vessel, a gauge nobody can read is a gauge nobody uses.
- Limits: the service limit is 120 F / 48 C and the warranty is a 3 year warranty, as the sheet states them.
Where the contents are a regulated liquid and containment is on the table, the Snyder Captor containment comparison is where that argument gets worked through properly rather than assumed from a picture of a bund. Tell us the product when you order so the discharge, the gasket and the bolting are matched to it rather than specified generically.
Bulk blending, settling and a full discharge
Thirteen thousand gallons on a cone is bought for bulk liquid that has to leave the tank completely: liquid fertiliser blending and storage at a co-op or a terminal, process and waste streams in food, beverage and rendering plants, mining and mineral processing where solids settle out, chemical blending at a manufacturer, wastewater and sludge holding, and biofuel or oilfield service operations. In each of those the cone is doing the same job, which is refusing to keep a heel of settled product between batches. That is worth real money over a year in reduced cleaning, less cross-contamination between products, and a pump that is not eating grit. It also changes the housekeeping: a cone tank rewards a plant that drains it fully on a schedule and punishes one that runs it half full for months and then wonders what is at the bottom.
Resin compatibility, line by line
Below are the liquids this resin is rated for, the concentration each rating holds to, and the fitting and gasket to specify. Check the exact concentration and temperature you run against the chemical page or the chemical compatibility database before ordering.
Lincoln, Nebraska, 3,660 pounds, and an oversize load
This tank is molded at Lincoln, Nebraska and ships from Nebraska. The sheet gives the freight class as OVS, which is a shipping mode and not a numeric class, under NMFC 156600, and the shipped envelope as 238 by 142 by 142 inches at 3,660 pounds. That is an oversize move with everything an oversize move brings: a dedicated trailer, a route that has been checked for bridges, wires and turns, permits where the states involved require them, and an unloading plan agreed before the truck leaves rather than negotiated at the gate. The freight cost estimator gives the lane to your ZIP as a starting point and the listed price is before freight; on a load this size, talk to us and we will work the delivery with you. Have the crane, the rigging and the foundation ready on the day it arrives, because a tank 19 feet 10 inches long sitting on a trailer while somebody finds a lifting plan is the most expensive hour of the project. Set it, plumb nothing until it is properly supported, then water-fill it in stages and read the structure, the discharge point and the ground under it at each stage before it goes into service. Commission it with water and a witness; on a vessel this size, the first fill is the only test that matters. Photograph the outlet fitting from below before the pipe goes on; a slow weep is easier to compare against than to describe.
Freight and documents
Ships from: Lincoln, NE. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 7490100N43.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Product video. Watch the Snyder Industries 13000 Gallon 30 Degree Plastic Cone Bottom Tank in White video (67 seconds) with dimensions, fittings and shipping notes.
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
