Description
Make a tank link
Connect two suitable water butts with 25mm corrugated PVC hose and two straight tank fittings.
Choose 1m to 5m of hose for the route between your tanks. Each option includes the same pair of 1-inch BSP male connectors, with back nuts and washers for mounting.
This is the hose-and-fittings kit. Water butts, hose clips, cutting tools and any additional sealing materials are separate.
Two ends, one hose
The photograph shows the 1m option. The 2m, 3m, 4m and 5m options provide longer hose with the same two fittings and their mounting parts.
Each connector has two different connections: a 1-inch BSP male thread at the tank and a 25mm barb inside the hose. BSP thread size is a nominal plumbing size, not a measurement of the hose bore or the hole you need to cut.
The nuts and washers mount the fittings to suitable tank walls. They do not clamp the hose onto its barbs. Choose hose clips separately by measuring the hose outside diameter once fitted.
25-40mm butterfly-grip hose clips are an option where that measured diameter falls within their range. No cutter or clips are supplied with this kit.
Plan the hose route
A little measuring before ordering helps you choose the right length.
Position both tanks
Check that each planned mounting area gives the washer an even seat and leaves room to reach the back nut. Inspect existing outlets for their actual thread size and gender; this is not a universal fitting for every water butt.
Measure along the pipe
Follow the complete route from fitting to fitting, allowing for gentle curves and the hose pushed over each barb. A 1m hose does not necessarily bridge a 1m gap between tank walls. Trim the selected hose if your route needs less.
Keep it supported
Arrange the pipe so its weight and movement do not pull on either tank wall. Keep suitable overflow provision for when both tanks fill. This kit does not include an overflow system, pump or automatic controller.
Before you fit the kit
What changes between the five length options?
The supplied hose length changes from 1m to 5m. Every option includes two straight 1-inch BSP male tank fittings with 25mm hose barbs, back nuts and washers. Longer hose options do not contain extra fittings. Choose the length for your measured route.
Does this kit include a drill bit or hole saw?
No. This version contains hose, two straight tank connectors and their nuts and washers. If new mounting openings are needed, choose suitable tools separately after checking the actual fittings, tank material, wall thickness and access inside the tank.
Is the hose smooth inside?
The internal ridges are smoothed, but the corrugated hose does not have a completely flat inner wall. Route it in gentle curves and avoid flattening it against corners or by overtightening a clip. Its nominal internal diameter is 25mm.
What should I check after installation?
Check that the tank fittings are seated evenly, the hose is securely retained on both barbs and the pipe is supported. Test the tank-wall seals and hose joints with water, then inspect them again after the pipe settles. Avoid excessive force on the plastic fittings.
Product information & technical details
| SKU | WB1LINK-001M |
|---|---|
| Product type | |
| Length | 1m, 2m, 3m, 4m, 5m |
| Internal diameter | 25mm (1") |
| BSP thread size | 1" |
| Thread gender | Male |
| Barb size | 25mm (1") |
| Kit parts | Corrugated hose in selected length, 2 straight tank connectors, Back nuts and washers |
|---|---|
| Colour | Black |
| Material | Plastic |
| Straight tank fittings | 2 × 1-inch BSP male to 25mm hose barb |
| Tank mounting | Back nut and washer for each fitting |
| Hose material | Flexible PVC |
| Hose bore profile | Smoothed internal ridges; not completely flat |
What is BSP?
What is BSP thread size?
BSP (British Standard Pipe) is a nominal pipe-thread size, not a direct measurement of a fitting’s bore or outside diameter. For example, a ½-inch BSP male thread measures about 21mm across its outer thread crests.
These figures are approximate outside diameters of male BSP threads, to help identify the nominal size. They are not inch-to-millimetre unit conversions:
- 3/8" BSP → 16.66 mm
- 1/2" BSP → 20.95 mm
- 3/4" BSP → 26.44 mm
- 1" BSP → 33.25 mm
- 1.25" BSP → 41.91 mm
- 1.5" BSP → 47.80 mm
- 2" BSP → 59.61 mm
- 3" BSP → 87.88 mm
- 4" BSP → 113.03 mm
All our BSP threads are parallel (BSPP, to ISO 228), not tapered.
Measure across the outside of a male thread, then check its pitch and whether it is parallel or tapered. Diameter alone does not confirm compatibility. Check the product’s stated thread specification before connecting.
All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.
If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.
Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.
Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.
All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.
If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.
Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.
If we are unable to repair the fault, we may offer either a replacement or a full refund.
In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.
You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.
To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.
Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.
If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.
If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.
For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.
Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.
All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.
If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.
Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.
Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.
All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.
If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.
Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.
If we are unable to repair the fault, we may offer either a replacement or a full refund.
In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.
You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.
To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.
Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.
If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.
If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.
For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.
Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.