
Description
Turn the hose at the connection
Bring a hose away from a compatible threaded port at a 90° angle with this black plastic elbow.
It combines a 20mm barbed hosetail with a ¾-inch BSP male thread. Match both ends to your hose and equipment before ordering.
One elbow supplied. Hose, clips and pump are separate.


Two ends. Two sizing conventions.
The 20mm hosetail connects to a suitable hose, while the ¾-inch BSP male thread connects to a matching female port.
The thread’s outside diameter is approximately 26.4mm. That is consistent with its nominal BSP size; it does not mean the hose end takes 26mm hose.
The dimension image also shows an approximately 35mm hosetail section. Use these reference dimensions to plan space for the connection, alongside the hose and equipment instructions.
Make room for the hose beyond the bend
Check both connections and the route before assembling.
Match the port
Confirm a compatible ¾-inch BSP female connection and its sealing method. The elbow is a fixed 90° fitting, rather than a swivel. Leave enough space for it to be fitted in the required direction.
Support the hose
Use hose suited to the 20mm hosetail and allow a broad curve beyond it. Avoid a run that pulls sideways on the body or places the hose’s weight on the threaded port.
Inspect both joints
Use suitable securing and sealing parts where required. Follow the equipment’s tightening guidance for plastic fittings, then check with water before concealing the connection. Keep the joint accessible for later inspection.
Questions about this elbow
Will a ¾-inch thread measure 19mm across?
No. The ¾-inch BSP label is a nominal pipe-thread size, not its outside diameter. This thread is approximately 26.4mm across the outside, as illustrated in the dimension photograph. Check for a compatible ¾-inch BSP female port and the correct sealing arrangement. Do not use the hose bore or a ruler reading of 19mm to identify this thread.
Does 20mm mean the hose outside diameter?
No. 20mm identifies the nominal barbed hose connection. Match it to the hose’s internal bore and construction; the hose wall makes its outside larger. Nominal ¾-inch hose descriptions can also differ between products, so an inch label alone does not prove a fit. Check the hose and equipment specifications rather than forcing a mismatched connection.
Is the elbow supplied with a pump or hose?
No. This listing is for one elbow connector. The dimension photograph identifies its barbed and threaded connections; the garden image is illustrative. A pump, hose and hose clips are not included. Select suitable connection parts for the equipment you already have, and check whether its instructions call for a particular seal or securing method.
Do I need a hose clip or thread seal?
That depends on the hose, port and operating conditions. Follow the equipment and hose fitting instructions for securing and sealing both joints; do not assume that a barb alone makes every installation leak-proof. Avoid overtightening the plastic body, support the hose, and inspect with water before covering the connection or leaving the system unattended.
Product information & technical details
| SKU | POND20B34BSPMELB001 |
|---|---|
| Product type | |
| BSP thread size | 3/4" |
| Thread gender | Male |
| Barb size | 19mm (3/4"), 20mm (3/4") |
| Colour | Black |
| Material | Plastic |
|---|---|
| Connection layout | 90° elbow: barbed hosetail to BSP male thread |
| Hosetail section length | Approximately 35mm |
| Thread size reference | ¾-inch BSP male; approximately 26.4mm external thread diameter |
| Contents | One elbow connector; hose, pump and hose clips not included |
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.