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Decca Tanks

GRP Combination Tank & Pump Enclosure Units

DECCA / COMBINATION UNITS

Water storage and equipment space together

Bespoke GRP water storage with a separate dry compartment for your equipment. Decca helps coordinate the capacity, layout and site access.

Shop combination units →Request a quotation →

Tank and enclosure as standard. Pumps, pipework and electrics by project agreement.

Decca GRP combination unit with open doors showing an example pump set and electrical equipment
Example fitted unit. Equipment is specified separately.Full photo ↗

TWO FUNCTIONS / ONE ENCLOSURE

Plan the water and equipment space together.

The tank stores the water. The adjoining dry compartment gives the pump set and other equipment a dedicated space within the same GRP unit.

Wet compartment

Water storage

Usable capacity and levels agreed

Dry compartment

Equipment space

Equipment scope agreed per project

Illustrative layout only. Compartment proportions, access and equipment scope are agreed for each project.

Storage that suits the duty

Start with the required usable litres and operating levels. The dry compartment does not contribute to stored water volume.

Space for the equipment

Share the pump-set footprint, pipework and controls layout so Decca can review the compartment dimensions and access.

A coordinated installation

One enclosure brings the tank and equipment area together. Connections, equipment and site works are defined in the quotation.

SPECIFICATION

Combination units at a glance

A bespoke unit, defined around your water-storage duty, equipment layout and site.

Construction Bespoke single-piece GRP unit with a wet tank compartment and a separate dry equipment compartment.
Standard supply Tank and enclosure. Pumps, pipework, electrical equipment and associated work are agreed separately.
Water storage Capacity, operating levels and connection positions set out on the agreed project drawing.
Insulation options 25 mm or 50 mm encapsulated polyurethane foam, selected to suit the project and location.
Access Lockable, outward-opening single or double doors; roof access to the water compartment.
Floor construction Encapsulated timber-based floor and bearer construction within the dry compartment.
External finish Colour and finish options, including smooth, textured and anti-vandal finishes, agreed before manufacture.

CONFIGURATION

Configure the unit around your project.

Choose the storage, equipment space and access as one coordinated layout.

Give Decca the water duty and required usable capacity, together with inlet, outlet, warning, overflow and drain requirements. Raised inlet chambers and an AB air-gap arrangement can be discussed for the selected unit. The final drawing confirms the arrangement.

Choose the door position and opening arrangement around equipment installation and servicing. Insulation, ventilation openings, colour and external finish are agreed to suit the location. Door swing and roof access must remain clear after the unit is positioned.

Pumps, interconnecting pipework and electrics are not included in the standard tank-and-enclosure supply. Ask Decca to define any additional package. Lighting, frost protection, heating, controls and electrical-board options can be discussed; the quotation records exactly what is included.

Example dry compartment in a Decca combination unit containing a three-pump booster set and electrical controls
Example fitted dry compartment. Equipment and installation are agreed per project.Full photo ↗
Decca GRP combination unit with lockable equipment doors on a delivery vehicle
Combination unit during delivery. Lifting and positioning are planned for the complete unit.Full photo ↗

DELIVERY & ACCESS

Plan for the complete unit.

Decca reviews the overall dimensions, delivery route and positioning arrangements with your team before manufacture.

  • Measure the full route, gates, turning space and final location.
  • Agree vehicle access, lifting method and unloading responsibilities.
  • Provide a flat, level support designed for the full filled load.
  • Keep doors, roof access, ventilation and service connections accessible.

Your structural designer confirms the support. Decca confirms the unit drawing and the agreed delivery and installation scope.

WORKING WITH DECCA

From drawing review to handover

01 / SELECT

Review the requirement

Decca helps coordinate water storage, equipment dimensions, connection positions and access.

02 / MANUFACTURE

Agree the drawing

We manufacture the tank and enclosure to the agreed project specification and confirm the supply package.

03 / DELIVER

Confirm the site scope

Installation can be included. Any testing, cleaning, disinfection, commissioning and handover work is defined in the quotation.

YOUR PROJECT / OUR SUPPORT

Let’s plan your combination unit.

Send what you have: a layout, equipment drawing or initial brief. Decca can help resolve the remaining tank and enclosure details.

Send your project details →Shop combination units →
Speak to Decca01772 825757[email protected]

Useful details for your quotation

  • Water duty, required usable litres and any approval requirements.
  • Pump-set dimensions, duty information and maintenance access.
  • Available footprint, headroom, door arrangement and connection positions.
  • Insulation, ventilation, lighting, heating and electrical requirements.
  • Site postcode, delivery access, programme and required installation scope.

HELP & GUIDANCE

Combination unit FAQs

The standard supply is the tank and enclosure. Pumps, pipework, electrics and any installation or commissioning are included only where agreed in the quotation.

The combination unit described here is supplied as a bespoke single-piece unit. Check the overall delivery dimensions, lifting arrangements and route before manufacture. If access is restricted, discuss the site with Decca before selecting the product.

Share the pump-set and equipment drawings, together with the access needed for installation and maintenance. Decca reviews the proposed layout and confirms the enclosure dimensions and door arrangement.

No. The overall unit includes the dry equipment compartment. Actual and usable storage depend on the water compartment, operating levels and fittings. State your required usable litres so Decca can review the correct storage arrangement.

Request the current combination-unit specification with your quotation. The agreed drawing confirms the dimensions and layout. Tell Decca about any required fire, ingress, acoustic or approval performance so the appropriate project-specific evidence can be reviewed.

TECHNICAL SUPPORT

Technical information for your project

Ask Decca for the current combination-unit specification and a drawing for the proposed tank, enclosure and equipment layout.

Request a specification or project drawing →

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