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Decca Tanks

IFB Sectional Water Tanks

INTERNALLY FLANGED BASE

Low-profile storage with internal base fixings

A low-profile sectional tank with internal base fixings and external wall fixings. Ask Decca to review your layout and supporting base.

Request an IFB quotation Calculate IFB capacity →

Selection help · Drawing review · Agreed installation support

Decca IFB sectional tank on a concrete plinth in a plant room, with service connections and an access ladder
IFB sectional tank installed on a concrete plinth.Full photo ↗

IFB at a glance

Base joints Internal fixings.
Wall joints External fixings; retain side working space.
Support Flat, level support to the agreed Decca base detail.
Main advantage Low installation profile; no underside fixing corridor.
Maintenance Empty the tank for work on internal base fixings.

Is IFB suitable?

  • A suitable flat, level support is available.
  • Side access is available for external wall fixings.
  • Compare TIF where surrounding walls restrict access.
IFB tank cutaway showing the internally flanged base highlighted in red
Schematic IFB cutaway. Red highlights identify the internal base flanges.

How the base is joined

Base panels are bolted at internal flanges. The cutaway highlights these joints in red; the wall fixings remain external.

Plan installation with Decca

Decca helps select the IFB arrangement and reviews your drawings for internal base access and external wall working space. We manufacture and supply the agreed tank and can include installation in the quotation. Before work starts, we agree the installation responsibilities and any testing, cleaning, disinfection and handover included in our scope.

  • Confirm the full filled load and support with your structural designer.
  • Include levelling steelwork, cover and any chamber in the height check.
  • Keep the manway, valves and instruments accessible.
  • Allow for removing residual water when cleaning the flat base.

Installation and services → · Fittings and accessories

Your questions answered

Options include insulation, divisions, raised inlet chambers, connections and level monitoring. For divided tanks, specify the litres and fittings for each compartment. Continued service during maintenance depends on the complete system.

Keep the capacity basis with the required litres. The detailed calculator explains nominal, actual and usable storage and carries your assumptions into the enquiry.

Compare EFB for external base access on raised supports, IF for internal wall joints with a choice of base, and TIF for restricted perimeter space. IF supply cost is usually closer to TIF than standard IFB or EFB.

Plan your IFB tank with Decca

Send your layout, required usable litres and connection details. Decca helps define the tank and the agreed supply or installation scope.

Request an IFB quotation →Calculate capacity & get a PDF →

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