31 Litre Underslung Tank – VW Transporter T7 2025 Onwards
£98.65 Exc VAT (£118.38 Inc VAT)
Shipping 3 – 5 Working Days
UK Mainland Delivery From £26.50
Product Description
31 Litre Underslung Tank – VW Transporter T7 2025 Onwards (SKU: T31UBK5). Designed specifically for the VW Transporter T7 (Year 2025 Onwards), this neat 31 Litre underslung tank Tank will sit cleanly in an area on the offside of the vehicle.
Made by water tank experts and developed alongside camper van builders, the 31 Litre Volkswagen Transporter T7 Water Tank comes with the following features;
- 2 x 1/2″ BSP Inlet – either can be used based on the optimum location for the build
- 1 x 1/2″ BSP sump outlet for maximum drainage
- 2 x pre-installed vents
- 5″ Internal Lid
- Level sensor recess
Optional Extras
Complete Fitting Kit (USK31C) – The 31 Litre Underslung Complete Fitting Kit contains the brackets, fittings and plumbing kit to give you everything you need to mount it with ease.
- Fitting Kit 2 x Brackets, 6 x TEK 3 Screw, 2 x 50mm Square Plate, 2 x M12 x 30 Flanged Hexset, 2 x M12 Washer
- Plumbing Kit 1 x 1/2″ BSP x 13mm hose tail, 2 x 1/2″ BSP x 13mm 90° hose tail, PTFE tape, 1 x 1/2″ BSP Plug
Applicability
- VW Transporter T7 2025 Onwards
- Ford Transit Custom 2023 Onwards
Please note – this tank will not fit vehicles with twin sliding doors or Left Hand Drive (LHD) vehicles.
Key Benefits
- Manufactured in the UK
- Joint development between industry experts
- Highly-durable Polymer
Product Information
31 Litre VW Transporter T7 2025 Onwards Underslung Tank Product Specification Sheet
VW Transporter T7 2025 Onwards Water Tank Fitting Instructions
View Similar Products
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Do you have a question in regards to the Underslung Water Tank Transit? Contact us here.
Product Specification
| Weight | 5 kg |
|---|---|
| Dimensions | L 1200 x W 160 x H 260 mm |
| Capacity | |
| Potable Material | |
| Baffled | |
| Outlet Size | |
| Material | |
| Manufacturer | |
| Lid Options |
Water Tank FAQs
Water Tank FAQs
Water Tank Outlet 'Drilled' or 'Undrilled'?
Each tank comes with a outlet as standard. The plastic behind the outlet can be removed (‘drilled’) to allow the liquid to run out of the tank and through a tap if you have one fitted. It can also be left ‘undrilled’ which means it remains closed and the liquid cannot come out through this outlet. You may wish the outlet to be left undrilled if you plan to use the tank purely to store water, as an example.
It is possible to choose ‘drilled’ but purchase a ‘plug’ for the correct size outlet which will seal the outlet when required but allow for flexibility in the use of the outlet. Another option is to choose to have the tank ‘undrilled’ and remove the plastic yourself at a later date.
What Does 'Potable' mean?
‘Potable’ is a term used to describe a tank suitable for storing water for human consumption. To be classified as potable, the plastic it is manufactured from must conform to the WRAS (Water Regulations Advisory Scheme). For more information on this, please visit the WRAS Approvals website here where they have an information titled ‘What is a WRAS Approval?’.
All our potable tanks adhere to these regulations. It will specify if a tank is potable in the Product Specification section on each product page.
What Water Tank do I need?
Water Storage Tanks are used across many different industries, which can make purchasing the correct one a little daunting.The following guide may be useful to you – ‘What Water Storage Tank Do I Need?.
Still Unsure? We are always willing to help – just give us a call or contact us here.
What is a Fusion Socket?
Each tank comes with a outlet as standard. The plastic behind the outlet can be removed (‘drilled’) to allow the liquid to run out of the tank and through a tap if you have one fitted. It can also be left ‘undrilled’ which means it remains closed and the liquid cannot come out through this outlet. You may wish the outlet to be left undrilled if you plan to use the tank purely to store water, as an example.
It is possible to choose ‘drilled’ but purchase a ‘plug’ for the correct size outlet which will seal the outlet when required but allow for flexibility in the use of the outlet. Another option is to choose to have the tank ‘undrilled’ and remove the plastic yourself at a later date.
Can I View Tanks Before Purchasing?
Yes, planned viewing is possible at a number of locations. Please call and allow us time to arrange this for you.
I plan to transport the tank in a van. What tank may be best?
From experience, our customers favor the Baffled Water Tanks for this application.
A Baffled Water Tank has pre-moulded internal walls called ‘baffles’ which helps to control the movement of the water in the tank during transportation of liquid. This also helps to improve the vehicle maneuverability.
The size of tank required is completely dependent on the size of your vehicle and the set-up you require. The most popular Baffled Water Tanks are as follows: 210 Litre upright, 250 Litre upright, 350 Litre upright and the 400 Litre upright water tank. We do have customers who prefer the larger tanks so this is also an option.
The Baffled Water Tanks are also suitable for use with water-fed poles.
To view our full range of Baffled Water Tanks, click here.
Can I add extra inlets / outlets to the water tanks?
Yes. This is possible by using a ‘fusion’ and are available in a number of sizes to suit your application or project. View the range here or read our Fusion Socket Guide here for more information. Just add the required fusion onto your order and once complete, we will be in touch to arrange placement of the fusion/s.
What lid do I need?
Each Water Storage Tank comes with either a ‘Vented’ or a ‘Plain’ lid as standard.
A vented lid allows air to circulate within the tank, helping to control the pressure within it. This is important if you plan to attach a pump to the tank as without this, the pressure may cause the tank may deform. Often, this type of damage is not repairable.
A plain lid is purely for containing the water and stops air getting into the tank.
See below for an example of either type (Note – the lid may look slightly different depending on what tank you are looking at. Please refer to the individual product for details).
In most instances, it is possible to swap a lid for an alternative but please contact us before ordering unless it is offered as an option on the product page.
Are there other colours available?
Yes, we are able to manufacture the majority of the Water Tank range in a wide variety of colours. You can view our Colour Chart page here
I wish to use my tank for saltwater. Is this suitable?
This is no problem, the only consideration you may wish to make when using saltwater is whether you would prefer to use a plastic outlet (know as a fusion) rather than the brass or nickel outlet that come as standard with the range. If this is the case, all you need to do is request that you tank comes 'undrilled' which will ensure a plastic 'wall' separates the metal fusion and the tank contents. The plastic fusion can be added almost anywhere on the tank. Just choose the fusion you require and add to your basket along with the tank. Once your order is placed, we will then in touch to discuss where you wish your plastic outlet to be placed.
What is the Byelaw 30 Kit?
The Byelaw 30 Kit is specifically used when connecting a tank to mains water supply. With an insect proof screened vent, as well as preventing backflow of the stored water into the main s(potable) supply, it helps to prevents contamination A Byelaw 30 Kit is required in order to conform to the Byelaw 30 Regulation as it helps to maintain the quality of the water in the tank.
Delivery and Returns
Delivery Terms - IMPORTANT PLEASE READ
The shipping cost for standard postcodes within UK Mainland will be calculated at the checkout when a postcode is entered.
Parts of the following areas may be more expensive. See below;
- Scottish highlands and islands including areas of the Glasgow / Edinburgh border, Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly, Northern Ireland, Republic of Ireland.
The below postcodes may be subject to additional postage charges;
- AB, BT, CA, CT, DD, DG, EH, FK,G, GY, IM, IV, JE, KA, KW, KY, LD, LL, ML, PA, PH, PO 30-41 (Isle of Wight), SA, SY, TD, TN, TR, ZE
Southern Ireland.
Please call before ordering if the postcode is listed above. Click here for our contact details.
Some of our products are only available for England & Wales delivery only as standard and this will be stated in the product description. Please get in touch if you are outside of this area and we can obtain a quotation for you.
Delivery Lead Times
See individual products for expected delivery times. If an order is to take longer than expected, we will email you with this information.
Custom orders may take longer than the standard stated time – please enquire. Due to the location of stock, items on your order may also be delivered separately.
Delivery Method
All items (unless otherwise stated on the product page) are delivered to Kerbside. In some instances for the larger items, customer offloading may be required.
Somebody will need to be in to receive and check the goods before signing for them. It is possible to arrange for the goods to be left in a safe place but this is at the risk of the customer and should anything happen to the goods once they have been left, we will be unable to support this.
IMPORTANT – In signing for the goods, you are agreeing that the item packaging is intact. If damage is found after this point, collection or redelivery cost will be down to the customer.
A book-service may be available in some instances. If there are specific timings for your delivery, please add them into the customer notes section on the order.
Missing/Faulty Parts
In the unlikely event that you find there are items missing from your order, please contact us within 14 days of the goods arrival and we will be able to correct this. Note that we may ask for a picture of the goods that have arrived – this will be required by the manufacturer of the goods in order to provide the missing/replacement parts.
If your items have arrived in a sub-standard condition, please email contact@onlinetankstore.co.uk with the following detail;
- Order Number
- Photos of the damage or fault
- Brief explanation of the issues
This will allow us to deal with the matter as swiftly as possible in order to reduce the inconvenience caused.
Delivery Charges
Please ensure the product you order from Online Tank Store Ltd. is the correct size & suitable for your specific use. All standard tanks (i.e. no customisation) are returnable but will be subject to a restocking charge and must be returned in A1 condition. It can be expensive for the customer to return due to the size and weight. Please ensure what you order is what you require. Read our full returns policy here before ordering.
If a delivery has been attempted and failed 3 times, the item will be taken back to the depot and redelivery charges will apply.
Special order or custom tanks are non-returnable therefore if your order is the incorrect product or no longer required unfortunately, it will not be accepted back and no refund will be given.
Returns Policy - IMPORTANT PLEASE READ
Our full returns and refund policy can be found by clicking here.
It is important to us that the items you order are correct for your needs however, we understand that situations and requirements can change. It can be costly to return an order so please ensure you are certain of your requirements before you order and that you have read the returns policy above for details.
Custom Tank – An order is considered ‘custom’ when a non-standard configuration or colour is requested. Custom orders are not eligible for return so please ensure the product is what you require before ordering. By purchasing, you are agreeing to the above terms.