
Description
A brass hose tap
A nickel-plated brass bib tap with a barbed hose outlet and a metal turn handle.
Pair the tank-side adapter with the hose size you use. Two kit options cover different connections.
Brass adapter, tap and PTFE tape supplied.


¾-inch tank connection, ½-inch hose
Select ¾-inch BSP for kit WB12-BRASS-KIT-011+. Its brass tank adapter has a ¾-inch BSP male external thread and a ½-inch BSP female internal thread.
The matching tap has a ½-inch BSP male inlet and a ½-inch hose barb. That barb fits hose by its internal bore: nominally 13mm.
The actual kit contents are shown here. The adapter comes with its back nut and two washers; one PTFE roll is included.

1-inch tank connection, ¾-inch hose
Select 1-inch BSP for kit WB34-BRASS-KIT-021+. This adapter has a 1-inch BSP male external thread and a ¾-inch BSP female internal thread.
It comes with a tap that has a ¾-inch BSP male inlet and a ¾-inch hose barb, for nominally 19mm internal-diameter hose.
This option changes the tap and hose connection as well as the tank adapter. Choose it to match your fittings, rather than assuming that both kits take the same hose.
Plan the connections before you fit
Check the tank, the hose bore and room to operate the handle.
Start at the tank
Match an existing female outlet to the adapter’s external male thread. For a new opening, check the tank wall, washer seating and access for the back nut. BSP sizes are thread names, not drill diameters.
Match the hose bore
Use hose with the corresponding internal diameter: ½ inch for the smaller kit or ¾ inch for the larger kit. The outlet is a barb, not a quick-connect nipple. Choose suitable hose clips where needed.
Leave working space
Allow clearance to turn the handle and fit the hose. Support the hose so it does not pull on the outlet. Check the mounting seal and threaded joints with water once the assembly is fitted.
Questions about the barbed tap kits
Do both adapter sizes take the same hose?
No. The ¾-inch BSP adapter option includes a tap with a nominal ½-inch hose barb, for approximately 13mm internal-diameter hose. The 1-inch BSP adapter option includes a nominal ¾-inch hose barb, for approximately 19mm internal-diameter hose. Check both the tank connection and your hose bore.
Will a quick-connect hose fitting click onto this tap?
The supplied outlet is a barbed hosetail for hose to slide over, rather than a male quick-connect nipple. A female quick connector will not click directly onto that barb. If you want a click-on connection, choose a tap kit designed with the appropriate quick-connect outlet instead.
Does the adapter size describe the tap inlet?
The option describes the tank-side male thread. In the ¾-inch BSP option, the adapter reduces to a ½-inch BSP female thread for the ½-inch male-inlet tap. In the 1-inch BSP option, it reduces to a ¾-inch BSP female thread for the ¾-inch male-inlet tap. The supplied tap matches the adapter.
What is supplied, and what do I need separately?
Each selected kit contains one brass tank adapter with a back nut and two washers, one nickel-plated brass bib tap with its barbed outlet fitting, and one PTFE roll. Supply your own tank, correctly sized hose and any suitable hose clips or fitting tools. Check mounting access and hose support before starting.
Product information & technical details
| SKU | WB12-BRASS-KIT-011+ |
|---|---|
| Product type | |
| BSP thread size | 1/2", 3/4", 1" |
| Thread gender | Male, Female |
| Barb size | 13mm (1/2"), 19mm (3/4") |
| Kit parts | Brass Tank Adapter, Nickel-plated Brass Bib Tap with Barbed Outlet, PTFE Tape |
| Colour | Brass, Silver |
| Material | Brass |
|---|---|
| ¾-inch BSP adapter option | ¾-inch BSP male / ½-inch BSP female adapter; ½-inch BSP male tap inlet; ½-inch hose barb |
| 1-inch BSP adapter option | 1-inch BSP male / ¾-inch BSP female adapter; ¾-inch BSP male tap inlet; ¾-inch hose barb |
| Tap body and finish | Brass with nickel plating |
| Tap control | Metal turn handle |
| Adapter mounting parts | Brass back nut and two washers |
| Kit quantity | 1 brass adapter, 1 nickel-plated brass barbed tap and 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 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.