7788 Litre GRP Sectional Water Tank, Totally Internally Flanged, Divided, AB Airgap


Product Ref: PW.3x2x1.TIF-AB.DIV(1+1)

Customer Offloading GRP WRAS Approved Made to Order, Non Returnable Product Made to Order, Non Returnable Product Yes
  • Volume: 7788ltr
  • Dimensions: L:3250mm W:2250mm H:1725mm
  • Home Delivery

    UK mainland delivery from £330.00 ex VAT

    check delivery cost


    Assembly Zones

    On Site assembly by a nationwide network of highly trained engineers, enabling us to get to you no matter where you are. Hand-picked by the manufacturers of the GRP Tanks themselves.

    Having your Sectional tank assembled on site saves all the hassle of piecing the tank together, being cost-effective and also validating the warrantee.

    Another process to save time and worry is to have your new sectional tank cleaned once installed. This process is normally put on the back burner, however once an engineer has entered the tank, drilled holes, set the tank up, the tank has contaminants within it which can harbour harmful bacteria, so it's a good code of practice to get the tank cleaned once assembled on site. You can select this option above, or you can contact us for a quote.

    To view the areas which the option of assembly is offered, please see below for postcodes or view our conplete list of sectional tanks assembly zones here.

    If this is required, please select the correct Zone for your postcode in the drop-down options above - Do you require on site assembly?, select yes and then the zones will appear for you to select.

    If your postcode is not included within these zones, please feel free to contact us for a quote.


    ZONE 1 - Midland Area Postcodes

    B, CV, CW, DE, DY, GL, HR, LE, MK, NG, NN, OX, SG, ST, WR, WS, WV


    ZONE 2 - London Area Postcodes

    AL, BR, CM, CR, DA, E , EC, EN, GU, HA , HP, IG, KT, LU, N, NW, RG, RH, RM, SE, SL, SM, SS, SW, TW, UB, W,  WC, WD


    ZONE 3 - East / South East Area Postcodes

    BN, CB, CO, CT, IP, ME, NR, PE, TN


    ZONE 4 -  South West Area Postcodes

    BA, BH, BS, DT, EX, PL, PO (Excluding IOW), SN, SO , SP, TA, TQ, TR (Excluding Islands)


    ZONE 5 -  North West Area Postcodes

    BB, BD, BL, CA, CH, FY, HD, HX, L, LA, M, PR, OL, SK, WA, WN


    ZONE 6 -  North East Area Postcodes

    DG, DH, DL, DN, HG, HU, LN, LS, NE, S, SR, TD, TS, YO


    ZONE 7 - Wales, Mainland

    CF, LD, LL, NP, SA, SY, TF


    ZONE 8 - Edinburgh & Glasgow

    EH, G

    Downloadable Documents

    Product Description

    7788 Litre Sectional Water Tank, Totally Internally Flanged (TIF), Divided, AB Airgap

    7788 Litre GRP Sectional Water Tank, a sectional tank with an internally flanged base and internally flanged sides. Modular construction utilising bolt together panels suitable for on-site assembly.

    Insulated and WRAS approved for use with potable water. Suitable for a variety of applications including process cooling, rainwater harvesting and many other systems and processes where containment of water is necessary. All gaskets, seals and fixings for assembly are included. Available for self-assembly, or on site assembly is available by qualified engineers for an additional cost.

    What's the Divided Section for in a sectional tank?

    Tanks with an internal division, which is also known as a maintenance division, are suitable for buildings that we require an uninterrupted water supply during periods of maintenance to the tank. The internal divider creates two isolated compartments within a single tank, which enables one side of the tank to be taken out of service for maintenance, whilst water supply is maintained to the building via the second compartment of the tank.

    Please note: divided tanks are essentially two separate tanks & therefore require double the quantity of connections, i.e. 2 x inlet connections & 2 x outlet connections to the down services.  

    TIF tanks are suitable for positioning onto a flat, level and continuous foundation, normally a structural concrete slab. 

    TIF tanks require a minimum of 500 mm working clearance all around the tank, a minimum of 500 mm above the man-way height and/or 350 mm above any raised float valve housing. 

    Optional Extras:

    • Screened lid vent

    • Screened overflow ¾' (22 mm) up to 4" 

    • Screened warning pipe ¾' (22 mm)

    • BSP female tank connector 1" up to 4" 

    • Lid mounted level switch to suit high or low warning Temperature sensor

    Important: All water storage tanks supplying water to a potable system require pre-commission cleaning and sterilisation, we can also carry out this work and issue the appropriate certificates. 

    A Totally Internally Flanged Tank (TIF) is one of the most cost-effective sectional tank format and is suitable for: Positioning onto a flat, solid, level and continuous foundation.

    Applications where there is sufficient working room all around the tank.

    Comprising: Internally flanged base, internally flanged sides, internally flanged roof. 

    Insulated to the sides and cover only.



    • Insulation: 38 mm Fully Encapsulated to Sides

    • Panel Size: 1000 x 1000 mm

    • Side Panels: Internally Flanged

    • Base Panels: Internally Flanged

    • Heavy Duty Lid: Internally Flanged

    • Fixings: Stainless Steel

    • Man way: Included, providing 800 x 800 mm access opening

    • 2 x 3 x 1 x 1 high compartments (divided sections)

    • Foundation Levelling Steels: Included (To suit flat structural foundation pad)


    PW.3x2x1.TIF.AB.DIV(1+1) Dimensions

     Airgap AB
     Nominal Capacity 7788 litres
     Single or twin compartment (Divided) Twin - 2 No. 3000 x 1000 x 1000 mm Compartments
     External Dimensions 3250 x 2250 x 1725 mm high
     Assembly area required 50 mm to 3 sides, 600 mm to one face - Height required 2075 mm



    Does your water tank need a clean?

    Water can pose a number of risks if not maintained correctly, with this in mind we can offer the below service for your GRP tanks.


    Annual Disinfection Information and Options

    • Designed for easy installation, saving time and money

    • We can offer monthly, yearly and fixed priced packages ranging from 1-3 years

    • All work is carried out by CSCS qualified engineers

    • Tank upgrade works available, bringing the old tanks up to current regulations

    • Full tank replacement works available

    • Legionella risk assessments including schematic drawings if required

    • Microbiology analysis - water sampling via UKAS approved laboratories

    • Building flush and mains injection

    • Commissioning of booster sets

    • Servicing of water softeners and booster sets

    • Replacement of hollow roof struts.

    • Insulating of existing cold water storage tanks



    All our GRP Sectional tanks are for delivery by customer offload. This entails the customer to acquire the right manpower and/or machinery to help unload the tank/s from the delivery vehicle.

    If you require assistance with offloading, we may be able to offer a tail lift (lowers the tank to the ground) or HIAB (lorry with a mounted crane to winch the tank off the delivery vehicle). Please contact us if this is required for delivery.

    Product Details

    • Product Code: PW
    • Customer Offloading: Customer Offloading
    • Material: GRP
    • Potable: WRAS Approved
    • Stock tank: Made to Order, Non Returnable Product
    • WRAS: Yes

    Why Choose Onsite assembly for Sectional tanks

    The benefits of purchasing onsite assembly for your sectional water storage tank, you will have experienced engineers onsite to assemble your water storage tank, all engineers have valid CSCS cards, asbestos awareness training and certification, confined space training and certification.

    We have a national coverage service assembling tanks day in day out & engineers are fully experienced in their field of works

    You should have peace of mind that all engineers are solely employed by the tank manufacturer directly and are educated to understand all water regulations in accordance with WRAS and the current water regulations guide & will ensure that your tank installation is meeting all current regulations to save any potential implications post install.

    Our engineers will check the whole area including the base to make sure that the environment meets all required criteria to carry out a successful & safe assembly. Engineers will also drill & fit any connections purchased with the tank providing a representative onsite can determine the location that these connections should be fitted.

    Not only will you take away the peace of mind that your tank has been assembled to a professional standard, you will also have a fully guaranteed tank which will cover all components & the assembly itself for a full 12-month period from the date of assembly.

    By selecting the onsite assembly option, you must agree & ensure that all tank components will be taken to the area where the tank is to be assembled prior to the engineer’s arrival to site.

    Once the assembly is complete, engineers will ask your nominated site contact to check the assembly & sign to confirm that they are happy with the works. Your site contact will be left with a copy of this paperwork which will advise that you must fill the 10 days of the assembly & send evidence of this over to a specific email address, this is very important to do this in order to validate your warranty.



    Our shipping costs cover most of the UK - however, parts of England, Scottish Highlands and Islands including areas north 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 and the Republic of Ireland may cost more.

    Please call before ordering if the delivery postcode is listed below. There may be additional shipping costs. 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

    Our lead times should only be used as a guide and are subject to change.


    Unless a hi-ab delivery has been booked at additional cost, it is the customer's responsibility to offload with suitable equipment on the day of delivery and a failed delivery may result in additional charges.

    We recommend installers and/or plant hire & materials to install such as excavators, aggregates etc are not booked until you are in receipt of the goods. Tanks Direct cannot be held responsible for costs incurred due to unforeseen delays, please see our terms for more details.


    HIAB delivery will be required if you need the tank offloaded from the delivery vehicle. The driver will unload the tank from the vehicle to ground level, however this service is not to place the tank in situ, this will need to be arranged separately.

    If you have any questions regarding your delivery, please contact the Sales Team on 01643 703358.

    Returns Information

    Please note - Certain items may not be returnable, for example those made to order or for sanitary reasons. Please check the product page for more information.

    Customers may return items within 14 calendar days (as per our Terms & Conditions) - refer to section 7. **

    All Items must be returned unused, refunds cannot be issued for used or previously installed items.

    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).

    If you wish to return goods, please complete the form on this page to provide further information.

    Once your request is approved, a valid Returns Authorisation Number (RAN) will be issued to initiate the returns process along with information on how & where to return your order along with any costs involved.

    Please DO NOT return any goods without this authorisation. Goods cannot be accepted without this.

    Returns are not accepted at our Minehead Office, please wait until we contact you before returning any goods.

    View Tanks Direct's return policy now.

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