
Description
Two outlets at your water butt
A brass tank adapter and metal double-outlet lever tap, supplied with PTFE tape.
Choose the adapter size to match your tank connection.
One selected-size kit. Hose and additional accessories separate.


3/4-inch adapter option
Choose 3/4-inch BSP in the selector for a brass adapter with a 3/4-inch BSP male external thread and 1/2-inch BSP female internal thread. The matching tap has a 1/2-inch BSP male inlet.
This is kit WB12-BRASS-KIT-005+. The adapter size shown in the selector refers to the tank-side external thread, rather than the smaller tap inlet.
The illustrated contents include one adapter with mounting nut and two washers, one double-outlet tap and one PTFE tape roll. Check the actual tank thread, wall thickness and washer seating before fitting.

1-inch adapter option
Choose 1-inch BSP for an adapter with a 1-inch BSP male external thread and 3/4-inch BSP female internal thread. The matching tap has a 3/4-inch BSP male inlet.
This is kit WB34-BRASS-KIT-005+. It contains the larger adapter and matching tap, with the same one-kit quantities: one adapter, one tap and one PTFE roll.
BSP names are nominal thread designations, not hole sizes. If you are making a new opening, check the actual adapter and mounting parts before choosing the opening diameter.
Connect and use each outlet
Plan the fittings, access and hose support before mounting the kit.
Quick-connect spout
The front spout has a click-lock quick-connect fitting. Use a compatible mating hose-end connector for your hose; the mating connector and hose are separate. Leave room to attach and release the connection.
Threaded second outlet
The second outlet has a BSP thread and its own valve. Match any accessory to the actual outlet thread and gender before ordering. The inlet size listed for the tap does not by itself establish the size of every outlet.
Mount and check
Allow access to the back nut and clearance for both controls. Support attached hoses and avoid using them as levers against the tank connection. After assembly, check the wall seal, threaded joints and both outlets with water.
Choosing and fitting your tap kit
Which size does the selector refer to?
The selector names the brass adapter’s external male BSP thread at the tank: 3/4 inch or 1 inch. The smaller option pairs a 3/4-inch male / 1/2-inch female adapter with a 1/2-inch inlet tap. The larger pairs a 1-inch male / 3/4-inch female adapter with a 3/4-inch inlet tap. Check the tank connection separately.
Can the two outlets be controlled separately?
Yes. The tap has a lever-operated quick-connect spout and a second BSP-threaded outlet with its own valve. This provides separate outlet control, but it does not increase the supply pressure or guarantee a particular flow through both branches. Check the fittings required for each connection.
What is included, and what do I need separately?
Each selected-size kit contains one brass adapter with a back nut and two washers, one matching metal double-outlet tap with a quick-connect outlet fitting, and one PTFE tape roll. Hose, a mating hose-end connector, any additional threaded accessories and drilling tools are not included.
Can I fit it to any tank or use it on mains water?
Check the tank’s thread or mounting opening, wall thickness, washer seating and access before fitting. There is no universal tank-fit claim, and no kit pressure rating or drinking-water approval is specified here. Use components with confirmed ratings and approvals where the installation requires them.
Product information & technical details
| SKU | WB12-BRASS-KIT-005+ |
|---|---|
| Product type | |
| BSP thread size | 1/2", 3/4", 1" |
| Thread gender | Male, Female |
| Kit parts | Brass Tank Adapter, Metal Double Outlet Tap, Quick Connector, PTFE Tape |
| Colour | Brass, Silver |
| Material | Brass |
| Adapter material | Brass |
|---|---|
| Tap finish | Nickel-plated metal |
| Main outlet | Click-lock quick connector |
| Second outlet | BSP thread with separate valve |
| Adapter mounting parts | Back nut and two washers |
| Kit quantity | 1 adapter, 1 tap, 1 PTFE roll |
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 1/2-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.