Water Storage Tanks

Niles Steel Tank large volume hot water storage tanks are built to the highest standards in the industry offering:

  • 5-year limited warranty
  • Bare, jacketed and insulated and our spray-on R-16 topcoat (suitable for outdoor applications)
  • Vertical and horizontal orientations
Custom-built to your exact needs

Whether you need standard off-the-shelf designs or a full custom tank, our team will guide you through your selection process and build the vessel you need. Adding additional fittings, changing fitting locations or replacing NPT’s with flanges is never an issue at Niles Steel Tank.

Red Storage Tank Jacketed Storage Tank
Product Features:
  • Designed for storage of potable hot water up to 180 degrees F
  • Vertical or Horizontal configurations
  • ASME IV, Part HLW
  • 125 PSI Standard
  • 150 psi ~ 160 psi – optional**
  • 3″ NPT circulation fittings
  • Ultonium® Glass Lining
  • Tank Defender® Epoxy Lining (Optional)
  • Manways included on tanks over 36“ dia
  • Magnesium Anodes (Power Anodes Optional)
  • Lift Lugs Standard on bare tanks
  • 4” Skirt , 6” Skirt on 54” diameter and above
  • Red Oxide Primer on bare tanks
  • Jacketed and insulated, bare or R-16 Topcoat
  • Stainless Steel option
  • Quick Ship program up to 1000 gallons
  • 5 Year Limited Warranty
  • 10 Year Warranty on Double Glass Lined Tanks
  • Niles Tank Defender® Epoxy lined tanks and horizontal tanks are manufactured to order
Quick Ship for large volume glass-lined hot water storage tanks

We hold a large inventory of bare tanks from 210 gallon up to 1000 gallons. You can add a steel jacket or our R-16 topcoat insulation with a 4-5 day turnaround.

  • Vertical jacketed tanks are limited to 144” overall height
  • Jacket diameters are limited to 60”
  • Spray-on topcoat insulation can be applied to any size tank. A single coat of topcoat has an R-16 value and a second coat can be applied for a total R-32 value.

Note: Spray-on topcoat is applied at 2.25” thickness, however, since it is hand applied, thickness variations can occur especially on the tank heads and around nozzles and flanges.

Be aware of nominal vs. actual gallons

The Niles Steel Tank model numbers indicate the actual physical size of only the tank itself, but we offer our gallons in both actual (usable) and nominal (includes the area outside of the tank). We do this because there is often some confusion when comparing other manufacturers sizes with ours.

To us, usable gallons are what the tank will actually hold and do not include areas outside of the tank.

To the right is a diagram which will better explain actual vs. nominal gallons.

Actual Vs Nominal Gallons Diagram

** Higher psi ratings on glass lined hot water storage tanks are available but manufactured under ASME code Section VIII –  “U” stamped.