Description
A 32mm tank link
Join two suitable water butts with black corrugated PVC hose and a pair of straight tank connectors.
Choose 1m to 5m. Two 1¼-inch BSP male fittings with 32mm barbs, back nuts and washers come with every kit.
Clips, tools, water butts and extra sealing materials are separate.
Check the route first
Choose the hose length after positioning the tanks and checking both mounting points.
Allow for the full path
Measure between the proposed fittings along the route the pipe will follow. Include gentle curves and the hose pushed over each barb. A longer route around an obstacle needs more pipe than the straight-line tank spacing suggests.
Check the tank walls
Look for suitable seating areas for the washers and space to access the nuts inside. Check the actual fittings against wall thickness and any existing openings. A pre-threaded outlet must match the BSP size and gender; this kit is not universal.
Plan for full tanks
Keep appropriate overflow provision in place when both tanks fill. The hose provides a link between the tanks; the kit does not include a pump, shut-off valve, automatic controller or a complete overflow system.
Know what fits where
The photograph shows the 1m kit. Choose a longer option for more hose; all five options contain the same pair of fittings and mounting parts.
32mm describes the nominal internal diameter of the hose. The barb fits inside it. The 1¼-inch BSP male thread belongs at the tank and is a different type of measurement, not the diameter of a hole to drill.
The back nut and washer retain each fitting at the tank wall. Use separate clips to secure the hose on its barbs, chosen for the actual outside diameter of the assembled connection.
32-36mm double-wire hose clamps are one option where that measured diameter falls within their range. Check the fit before tightening and avoid crushing the hose.
Support the pipe so its weight does not pull on the tank fittings. Test both tank-wall seals and hose joints with water, then inspect them again after the pipe settles.
Questions about this kit
Are the 32mm and 1¼-inch sizes interchangeable?
They refer to different connections here. The corrugated hose has a nominal 32mm internal diameter and fits the 32mm barbs. The fittings mount at the tank using 1¼-inch BSP male threads. Do not use the hose bore or a simple inch-to-millimetre conversion to choose a tank opening.
Do all five lengths include the same fittings?
Yes. Each option includes two straight 1¼-inch BSP male to 32mm barbed tank fittings with back nuts and washers. Only the hose length changes between 1m and 5m. Longer kits do not include extra connectors, clips or a cutter.
Is the hose completely smooth inside?
No. The pipe has smoothed internal ridges rather than a completely flat bore. It is flexible corrugated PVC hose: route it in gentle curves, keep it supported and avoid flattening it against a corner or with an overtightened clip.
Can I use an existing outlet on my water butt?
Check its actual connection before ordering. An existing threaded outlet must accept a 1¼-inch BSP male fitting; a plain opening needs to suit the supplied connector and its mounting arrangement. Also check wall thickness, washer seating and access to the nut inside. Water butt designs vary.
Product information & technical details
| SKU | WB125LINK-001M |
|---|---|
| Product type | |
| Length | 1m, 2m, 3m, 4m, 5m |
| Internal diameter | 32mm (1.25") |
| BSP thread size | 1.25" |
| Thread gender | Male |
| Barb size | 32mm (1.25") |
| Kit parts | Corrugated hose in selected length, 2 straight tank connectors, Back nuts and washers |
|---|---|
| Colour | Black |
| Material | Plastic |
| Straight tank fittings | 2 × 1¼-inch BSP male to 32mm 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.