Large One Piece Storage Tanks

Decca’s Large Storage capacity range of tanks offer all the qualities of our Sectional Range, without the cost of the tank installation on site; these tanks are economical and can be craned into position to give you a product ready to be connected to the pipe works system.

Our large One Piece Storage Range offers many advantages and cost savings.



- MADE TO MEASURE
- READY TO USE
- NO INSTALLATION COSTS
- CAN BE CRANED INTO POSITION
- LOW MAINTENANCE COSTS
- CAN BE COLOUR CO-ORDINATED

Construction All Deccatanks are manufactured from top quality glass fibre/impregnated with polyester resin. All materials are WRAS & WRC approved. Based on the size of the unit under construction, integral treated timber reinforcements are encapsulated within the laminate. Units have a clean, smooth internal finish.

1. Base Supports
Tanks should be situated on a continuous solid base i.e. marine plywood,TG board, concrete and not rely on cross bracing alone.

2. Manways & Inspection
Manways are bolted & vented which are in a standard size of: 600 x 600mm. They can be alternatively supplied hinged as a Deluxe Manway Inspection hatches 450 x 450mm are supplied standard with tank(s) holding over 1000 litres.

3. Raised Ball Valve Chamber
Standard Ball Valve Chambers are fitted with a reinforced Ball Valve Area(s). These chambers can be preinsulated. Connection holes may be cut with conventional tools. Holes must be a snug fit.

4. Overflow screens
Each tank is supplied with a DECCAscreen overflow to (BS 6700) whilst tanks supplied to the requirements of Byelaw 30 are complete with an additional 22mm early warning screen having a 0.65mm micromesh filter.

5. Catchment Trays
Readily available on request these items can also be made in sections dependent on the size of unit being supplied.

6. Divider
Maintenance Dividers can be installed within the tank(s) to enable maintenance work without a complete shut down period.

7. Covers
Tanks can be supplied with loose fitting covers. In circumstances where Byelaw 30 requirements are specified, the gasketed cover would be fitted with the appropriate screened vent.Access can be arranged as required.

8. Insulation
Tanks can be integrally insulated with Rigid Polyurethane Foam encapsulated in the GRP. Thus, protecting and preventing future removal and damage. This is available in several thickness giving corresponding U valves. Alternatively we also stock a 60mm lagging set.

Click here for Decca CM Tank Size Chart