Description
Control the line
Connect an irrigation line to your water butt with a plastic tank adapter and Antelco valve.
Choose a compact Standard fitting or an Extended connector for more clearance from the tank.
¾-inch BSP threads. Straight 13mm hose barb.
Standard: keep the fitting compact
The Standard option, SKU WB34MF-KIT020, uses the shorter tank connector. Its ¾-inch BSP male thread connects at the tank, while the valve’s ¾-inch BSP male inlet screws into the adapter’s female socket.
The valve’s straight 13mm barb forms the hose connection. Turning the valve operates the water supply directly at the tank, without removing the tubing.
The actual parts are shown here. One connector, back nut, two washers and one Antelco valve are supplied; hose, tubing, clips and the tank are separate.
Extended: bring the valve forward
The Extended option, SKU WBEX34MF-KIT020, has the same ¾-inch BSP male/female threads and the same Antelco valve, with a longer connector between the tank and valve.
The connector measures 50mm overall, with about 40mm usable projection. These describe the connector, rather than the complete adapter-and-valve assembly.
Use the extra reach where the tank shape makes a close-mounted valve awkward to operate. Check the full fitting and hose route against the available space, and support the tubing so it does not pull on the connector.
Plan the tank and tubing connection
Thread size, hose fit and operating space are separate checks.
Match the tank fitting
Both options use a ¾-inch BSP male tank connection. Check the thread size and gender of an existing outlet. For a new opening, check the wall, washer seating and back-nut access; BSP size is not a drilling diameter.
Match the tubing
The valve has a 13mm barb, which fits inside compatible tubing. Check the tube’s internal fit and secure it appropriately. A tube sold by its outside diameter needs its bore checked too; do not choose it by the BSP thread size.
Leave room to operate
Make sure you can reach and turn the valve without the tank or hose getting in the way. The purple-cap version is for irrigation and recycled water, not drinking water. Check the mounting seal and threaded joint with water after fitting.
Questions about the irrigation valve kits
Do Standard and Extended have different thread sizes?
No. Both adapters have a ¾-inch BSP male thread at the tank and a ¾-inch BSP female socket for the valve. Both use the same Antelco 46705 valve with a ¾-inch BSP male inlet and 13mm barb. The difference is the connector’s reach: the Extended tube is 50mm overall, with about 40mm usable projection.
Does 13mm describe the tank thread?
No. It describes the barbed hose outlet on the valve, which fits inside compatible tubing. The tank connection and valve inlet are ¾-inch BSP threaded connections. Check the tubing’s internal fit separately from its outside diameter and use suitable retention for the particular tube you choose.
Can I use the purple-cap valve for drinking water?
This Purple Back valve is the recycled-water version and is marked not for drinking water. Use it for a suitable irrigation or recycled-water line. It gives manual on/off control; it does not treat water, regulate pressure or provide automatic timed watering.
What is included in the selected kit?
You receive one Standard connector or one Extended tube, according to your selection, together with one back nut, two washers and one Antelco 46705 barbed valve. The tank, tubing, hose, securing clips and drilling tools are separate. Check access to the nut and washer seating before mounting the fitting.
Product information & technical details
| SKU | WB34MF-KIT020 |
|---|---|
| Product type | |
| BSP thread size | 3/4" |
| Thread gender | Male, Female |
| Barb size | 13mm (1/2") |
| Kit parts | Selected Plastic Tank Adapter, Back Nut, 2 Washers, Antelco 46705 Barbed Valve |
| Colour | Black |
| Material | Plastic |
|---|---|
| Adapter threads (both styles) | ¾-inch BSP male tank connection / ¾-inch BSP female valve socket |
| Valve model and inlet | Antelco 46705 Purple Back; ¾-inch BSP male |
| Valve outlet | 13mm straight hose barb |
| Extended adapter dimensions | 50mm overall connector length; about 40mm usable projection |
| Water use | Irrigation / recycled water; not drinking water |
| Kit contents | 1 selected plastic adapter, 1 back nut, 2 washers and 1 Antelco valve |
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.