Paxton

Paxton tanks are a modular GRP (glass-reinforced plastic) sectional range, designed for larger-volume water storage where a single-piece tank isn't practical to deliver or site. They're commonly specified for fire suppression reservoirs, bulk potable water storage and non-potable applications such as irrigation or industrial process water. Because they're built from bolted panels, capacity can be scaled up simply by adding sections.

Unlike a one-piece tank, Paxton tanks arrive as flat-packed GRP panels, internal bracing and seals, which are assembled on site — usually by a specialist installation team rather than lifted in whole. This means access for a crane isn't needed, making them a practical option for tight or restricted sites. You will need level, prepared foundations and enough space around the footprint for the panels to be bolted together.

Paxton tanks require a flat, level, load-bearing base — typically a concrete slab or ring beam designed by a structural engineer to suit the tank's filled weight and ground conditions. The base must be accurately set out to the tank's footprint before assembly begins, as sectional tanks have little tolerance for an uneven or out-of-square foundation. We'd always recommend getting the base design confirmed against the specific tank's loading data before pouring.

Yes — Paxton tanks are available in WRAS-approved potable specification, using liners and jointing materials suitable for wholesome water storage. If the tank is for drinking water, food-grade use or anywhere it connects to the mains supply, make sure you specify the potable build rather than the standard non-potable version. Non-potable spec is fine for fire water, irrigation or grey water storage where drinking-water compliance isn't required.

Sizing depends on the application: for fire suppression it's driven by the required fire flow duration set out in your fire strategy or insurer's requirements; for potable or process water it's based on daily demand and desired buffer or downtime cover. Because the range is modular, capacities aren't fixed to a handful of sizes — sections can be combined to hit an exact volume. Our team can help match a configuration to your required capacity and footprint constraints.

Most installations need inlet and outlet connections, an overflow, access hatches for inspection, and a ladder or internal rungs for larger tanks, none of which are always included as standard and should be specified alongside the tank. Depending on use, you may also need a float valve, level sensors or a fire brigade connection for suppression tanks. It's worth confirming your full fittings list before ordering so everything arrives ready for a single installation visit.