Description
Control the flow
Connect a suitable 13mm irrigation line to your tank with a brass adapter and an Antelco on/off valve.
A threaded tank connection at one end, a hose barb at the other.
One kit with PTFE tape. Irrigation water only.
Match the tank thread and tube separately
The brass adapter’s 1-inch BSP male external thread fits a matching tank connection. Its ¾-inch BSP female internal thread accepts the Antelco valve’s ¾-inch BSP male inlet.
The valve’s other end is a 13mm barb for suitable irrigation tube. Match the tube’s internal fit to the barb; an outside-diameter pipe label is a different measurement.
Kit WB34-BRASS-KIT-020+ includes the adapter with its brass back nut and two washers, one Antelco 46705 Purple Back valve and one PTFE tape roll. Hose, emitters and securing clips are separate.
The purple cap identifies the recycled-water version and is marked not for drinking water. This manual valve opens or closes the line; it does not automate watering or regulate pressure.
Build the connection around your tank
Check the mounting point, tubing fit and access to the valve before assembly.
Check the mounting point
Match an existing outlet’s actual thread. For a new opening, check the adapter, wall thickness, washer seating and access to the nut first. A nominal BSP size does not tell you what hole to drill.
Connect the irrigation tube
Use tube that fits the 13mm barb and a suitable securing method. Support the line so its weight does not pull on the valve or tank fitting, and leave room to operate the valve control.
Test before watering
Inspect the tank-wall seal, threaded joint and tube connection with water after assembly and again when the tank is filled. The assembled kit has no separately established pressure rating.
Questions about this irrigation valve kit
What does the 13mm size refer to?
It refers to the valve’s barbed outlet for compatible irrigation tube, not the tank thread. The adapter has a 1-inch BSP male external thread and a ¾-inch BSP female internal thread; the valve has a matching ¾-inch BSP male inlet. Check the tubing’s internal fit rather than assuming an outside-diameter label means the same thing.
Why does the valve have a purple cap?
This is Antelco’s Purple Back version for recycled-water irrigation applications. Its cap is marked not for drinking water. Use the kit for an appropriate irrigation-water setup; neither the colour nor the brass mounting adapter establishes drinking-water approval for the completed connection.
What pressure can the kit be used at?
Antelco specifies an operating range up to 300kPa (3 bar) for the valve component. That is not a pressure rating for this assembled kit, the tank, tubing or mounting seal. Check the requirements and ratings of the complete system before using a pressurised supply. The Antelco threaded-valve datasheet gives the valve’s specification.
Does this replace an irrigation timer?
No. The valve is a manual on/off control with a straight-through connection. It does not switch on to a schedule or regulate pressure. You receive one adapter with its nut and two washers, one valve and one PTFE roll; timers, tubing, emitters, clips and the tank are separate.
Product information & technical details
| SKU | WB34-BRASS-KIT-020+ |
|---|---|
| Product type | |
| BSP thread size | 3/4", 1" |
| Thread gender | Male, Female |
| Barb size | 13mm (1/2") |
| Kit parts | Brass Tank Adapter, Antelco 46705 Barbed Valve, PTFE Tape |
| Colour | Brass, Black |
| Material | Brass, Plastic |
|---|---|
| Adapter threads | 1-inch BSP male / ¾-inch BSP female |
| Valve model | Antelco 46705 Purple Back |
| Valve inlet | ¾-inch BSP male |
| Valve outlet | 13mm hose barb |
| Water use | Irrigation / recycled water; not drinking water |
| Kit contents | 1 brass adapter with nut and two washers, 1 valve, 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.