1400 Litre Slimline Bunded Oil Tank - Diamond 1400SSL

Diamond Tanks 1400 Litre Slimline Bunded Oil Tank - Diamond 1400SSL

Price Match

If You Have Seen A Cheaper Tank, Call Us And Let Us PRICE MATCH (terms apply)

We Will Need To Know Where You Have Seen The Tank, The Price And The Manufacturer

Product Description

1400SSL 1400 Litre Diamond Slimline Bunded Oil Tank

1400 litre (approx. 300 gallons) bunded kerosene storage tank.

This quality bunded heating oil tank is suitable for both domestic and commercial fuel oil storage.

Supplied complete with:

  • Bottom outlet with 1" BSP (F) thread

  • 16" lockable lid

  • 2" BSP (M) fill point

  • 4" lockable inspection cap

  • 32mm hole with cover suitable for fitting an electronic gauge

  • Inner tank vent

  • Moulded in handles for ease of lifting

Manufactured from high grade polyethylene this British made Diamond tank is corrosion resistant, has high impact strength and is UV stabilised. All Harlequin Plastics tanks are CE marked and comply with the latest European standards.

Product Code: 1400SSL

Estimated Lead Time Approx 2 weeks

£1159.00 ex VAT
(£1,390.80 inc VAT)
Delivery Options
  • FREE TAIL LIFT Delivery (for most HARLEQUIN tanks under 2500 litres) - Lowers tank to ground level to assist in off-loading, Excludes Scotland, Highlands and Islands

Certain postcodes in Wales, Scotland, highlands and Islands may have additional charges, please click here to check your postcode

You may also need:

up down
Tail Lift Delivery Diesel, Gas Oil, Heating Oil Diesel, Gas Oil, Heating Oil Diesel, Gas Oil, Heating Oil

Delivery Options: Tail Lift Delivery

Guarantee: 10 Year Guarantee

Made From: Plastic

Suitable For Fuel: Diesel, Gas Oil, Heating Oil

Tank Shape: Slimline

Tank Type: Bunded

Capacity: 1363 litres

Weight: 200.00kg

Dimensions (l x w x h): 2110mm x 640mm x 1670mm


pdfDiamond Tank Data Sheet

Item: HQ

What is a bunded tank?

A bunded tank consists of a 'tank within a tank'.

The inner tank is the primary storage vessel, whilst the outer tank acts as a failsafe.

In the event of a spill, surplus fuel will safely and securely be stored within the outer tank and an environmental pollution incident will be averted. 

Installation requirements

This Oil Tank must be installed and maintained in accordance to the current OFTEC guidelines, by an OFTEC Registered Technician or similarly competent person.

Fuel Tank Shop and the manufacturer will not be responsible for oil tank installations which do not comply with these requirements.

OFTEC Base Construction Guidelines (in brief):

  • Adequate for the weight of the tank when full
  • Non-combustible, imperforate and level
  • Constructed of concrete, paving stones or stonework
  • Large enough to extend 300mm beyond ALL sides of the tanks

Returns Information

Customers may return items within 14 calendar days (as per our Terms & Conditions) - refer to 4.6 & 4.7. **

Please be aware that returning a tank can be complicated and expensive so please check that you are ordering the correct item (we suggest checking the dimensions very carefully).

Delivery Information


The delivery of a tank can be confusing as each manufacturer offers a slightly different service and lead time. Please refer to our Delivery Information page.  Standard tank deliveries are "kerbside" which means the tank will be delivered to the kerb only and not positioned further. Should you have specific delivery requirements or restrictions, please contact us to discuss.


Most accessories will be delivered within 1-3 working days. If you require them quicker, we can on occasions offer a next day service (please contact us to discuss). If the item(s) are out of stock we will advise you of the expected lead time and you will of course have the opportunity to cancel with a full refund.

Customer Reviews

"Ideal slimline tank fit for purpose."
Feefo Rating 5
Feefo Rating 5
"Very Large bunded tank accessories included"
Feefo Rating 4
"Good quality tank at the right price. Delivered earlier than expected which helped me a lot. First class."
Star Rating 5

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