Compact Fire Sprinkler Tank

Modern buildings rarely have spare floor space. When fire sprinkler regulations demand a stored water reserve but the site has no room for a conventional cylindrical tank, the challenge shifts to finding capacity in places traditional designs simply can’t go. Plant rooms with restricted ceilings, basement corners, irregularly shaped footprints, retrofit installations in existing buildings, all of these need a different approach. Franklin Hodge designed the Firetainer® for exactly these situations.

How Can You Reduce the Footprint of a Fire Sprinkler Water Tank? 

The Firetainer® sectional site-assembled tank is designed to fit into restricted or irregularly shaped spaces. It can be built up to 5.35m high, offering a unique space-saving solution that no other sectional tank system can provide. Where a conventional cylindrical fire sprinkler tank needs a wide circular footprint to deliver volume, the Firetainer goes vertical and rectangular instead, converting limited floor area into full storage capacity.

The Firetainer® Compact Fire Sprinkler Tank Solution 

The Firetainer® is built from sectional panels, assembled on-site rather than delivered as a pre-formed vessel. That single design choice unlocks everything else: 

• Panels arrive in kit form, so awkward access routes and tight site approaches stop being a problem 
• The tank takes the shape the building actually has, including rectangular footprints, L-shapes, or constrained corners 
• Vertical capacity replaces the floor area where a wider tank would need to hold the same volume 
• Construction happens in position, removing the need for crane lifts or large equipment approaches 

The result is a fully LPCB-approved compact fire sprinkler tank that delivers the same certified water reserve as a conventional design, in a fraction of the footprint.

Building Up to 5.35m: How Vertical Capacity Saves Floor Space 

The 5.35m maximum height of the Firetainer® is the headline figure, but the practical impact is what matters. A tank that goes 5.35m up rather than 3m needs less than half the floor area for the same volume. On sites where every square metre of plant room is contested, that reduction can be the difference between a viable installation and a project that has to be redesigned around the tank.

Where a Compact Fire Sprinkler Tank Solves the Problem 

Compact fire sprinkler tank specifications come into their own across a familiar range of site challenges: 

• High-rise residential and commercial developments where plant rooms sit in tight basement corners 
• Retrofit projects where new sprinkler installations have to fit existing buildings 
• Industrial facilities where production floor space is too valuable to lose to water storage 
• Multi-occupancy housing developments subject to BS 9251 residential sprinkler requirements 

The Firetainer® addresses each of these directly, without compromising the LPCB approval required for fire protection tanks supplying certified sprinkler systems.

Sizing Your Compact Fire Sprinkler Tank 

Compact fire sprinkler tank sizing depends on the system design, the building it serves, and the certification path being followed. Our tank capacity calculator gives an initial sizing reference, with the final specification confirmed against your sprinkler system requirements during the design conversation. 

You can also see examples of restricted-space installations across our projects page, where Firetainer® tanks have been built into locations no off-the-shelf design would have reached.

Talk to Franklin Hodge About Compact Fire Sprinkler Tank Specification

Compact fire sprinkler tank projects start with site constraints, not standard product dimensions. The sooner we understand the available footprint, ceiling height, access route, and capacity target, the better the configuration we can build to suit them. Request a quote with your space constraints and we’ll respond with the right Firetainer® configuration.

Frequently Asked Questions 

What tank does Franklin Hodge offer for restricted spaces? 

The Firetainer® sectional tank is designed for restricted or irregularly shaped spaces and is our standard compact solution. 

How tall can a Firetainer® compact fire sprinkler tank be built? 

The Firetainer® can be built up to 5.35m high, offering significant vertical capacity to save floor space. 

Is the Firetainer® compact fire sprinkler tank LPCB-approved? 

Yes, the Firetainer® holds LPCB approval across its configurations, including compact installations for restricted footprints. 

Where is the Firetainer® typically installed? 

Plant rooms, basements, retrofit installations, and any site where a conventional cylindrical tank doesn’t fit the available footprint. 

How is a compact fire sprinkler tank installed? 

The Firetainer® is shipped in kit form and assembled on-site from sectional panels, so restricted access doesn’t prevent installation.