Description
Link your water butts
Make a hose connection between two suitable tanks with 25mm corrugated hose, two straight tank fittings and a 34mm HSS hole saw.
Choose 1m, 2m, 3m, 4m or 5m of hose to suit your planned route. Every option includes the same pair of fittings and mounting parts, plus the cutter.
Water butts, power drill, hose clips and any additional sealing materials are not included.
Plan the connection
Decide where the tanks and fittings will sit before choosing your hose length.
Measure the route
Measure between the proposed fitting positions along the route the hose will follow. Allow for gentle curves, clearances and the length pushed onto both barbs. The selected length is hose supplied, not the maximum gap between tanks.
Check both tank walls
Choose suitable seating areas and make sure you can reach the back nuts inside. Check the supplied fittings against the tank walls and planned openings. Do not assume that every pre-threaded outlet or container wall will fit.
Leave space for overflow
Plan where excess rainwater will go when both tanks are full. This kit provides a connection between tanks; it does not include an overflow route, automatic level control, pump or shut-off valve.
What comes in the kit
- One length of black 25mm (1-inch) internal-diameter corrugated PVC hose, in the length you select.
- Two straight plastic fittings, each with a 1-inch BSP male tank connection and a 25mm hose barb.
- Back nuts and washer sets for mounting the fittings.
- One 34mm HSS hole saw cutter.
The supplied cutter makes an opening; it does not cut a BSP thread. Check the actual fitting, wall material and cutter setup before starting, and follow the instructions for your power tool.
The photograph shows the kit parts together. Hose coils are a presentation of the pipe, not a scale drawing of the length selected.
Fit, support and check
Keep the hose route relaxed and test each connection after assembly.
Seat the tank fittings
Keep the mounting surfaces clean and the washers seated evenly. Refit the back nuts with care, avoiding excessive force on the plastic or tank wall. Check access before making any permanent openings.
Secure the hose ends
Fit the hose fully onto the barbs and choose suitable clips separately. Measure the outside diameter with the hose on the fitting: it differs from the 25mm internal bore. 25-40mm butterfly-grip hose clips are one option where that measured diameter is within their range.
Inspect with water
Support the hose so its weight does not pull on the fittings. Fill and inspect the tank-wall seals and hose joints. Check again after the hose has settled, and keep a suitable overflow route available.
Questions about this kit
What changes when I select a different length?
Only the supplied hose length changes between the 1m, 2m, 3m, 4m and 5m options. Each has the same 25mm hose bore, two 1-inch BSP male straight tank fittings with mounting parts, and one 34mm HSS hole saw. Select the length for your measured hose route.
Is the hose completely smooth inside?
No. It is corrugated PVC hose with smoothed internal ridges. The term smooth bore used for this style of hose does not mean a completely flat inner wall. Keep bends gentle and avoid flattening the hose when routing or securing it.
Are hose clips and a power drill included?
No. The kit includes the hole saw cutter, hose and two tank fittings with their mounting parts. Supply a suitable power drill and hose clips separately. Choose clips for the actual outside diameter of the hose when it is pushed onto a barb.
Does the hole saw make a threaded tank outlet?
No. The 34mm cutter makes an opening for mounting a fitting; it does not form a BSP thread. The fitting is retained with its back nut and washer arrangement. Check wall thickness, seating and internal access before drilling your tank.
Product information & technical details
| SKU | WB1LINK-001M+DB |
|---|---|
| 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, 34mm HSS hole saw |
| Colour | Black |
|---|---|
| Material | Plastic, Steel |
| Included cutter | 34mm HSS hole saw |
| Straight tank fittings | 2 × 1-inch BSP male to 25mm hose barb |
| Tank mounting | Back nut and washer set 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.