Description
Bring your 40mm hose to a threaded port
Connect suitable 40mm pond hose to a matching 1½-inch BSP female port with this straight plastic adapter.
The external male thread fits the equipment connection. The single-size ribbed hosetail takes the hose.
One adapter supplied. Hose, clips and sealing accessories are sold separately.
Check the fitting before planning the hose route
The adapter measures 80mm overall, including a 50mm hosetail section. Allow additional room for the hose to seat over the ribs and curve gently beyond the fitting.
The threaded end is 1½-inch BSP male, shown at approximately 47.8mm externally. That is a nominal thread specification, separate from the 40mm hose bore. The photo shows two views of one adapter.
Choose the parts around the adapter
Match the equipment port, hose and securing clip as a complete connection.
A matching female thread
Confirm a 1½-inch BSP female port. Follow the equipment’s sealing method and tightening guidance for plastic fittings. The hex shoulder is fixed to the body, so plan assembly access around the adapter.
Suitable 40mm-bore hose
Check the metric internal bore and wall profile before fitting the hose. The 38mm range is listed separately. Select the securing clip from the outside diameter once the correct hose is seated on the barb.
A supported, accessible run
Keep the hose’s weight and sideways pull off the equipment port. Leave a gradual bend beyond the fitting and access to both joints. Secure the hose appropriately and inspect the assembly with water before concealing it.
Questions about the 1½-inch BSP male adapter
How does this differ from the 40mm / 1¼-inch BSP adapter?
Both versions have a hosetail for suitable 40mm-bore hose, but their equipment threads are different. This one has a 1½-inch BSP male thread, shown at approximately 47.8mm externally. It needs a matching 1½-inch BSP female port. Check the equipment’s stated thread size; matching the hose bore does not make the two threaded versions interchangeable.
Can I use a 38mm hose with a 1½-inch label?
Use the metric bore when selecting the hose. The 38mm and 40mm ranges may both be called 1½-inch, but they are separate nominal sizes. This adapter is the 40mm hosetail version. Check the hose’s internal diameter and wall profile against the fitting requirements, then choose the securing clip separately from the fitted outside diameter.
Does the 80mm measurement include the hosetail?
Yes. The reference photograph shows 80mm as the overall adapter length, with a 50mm hosetail section within it. Those are fitting dimensions, not the clearance for the completed hose run. Allow room for thread engagement, hose seating, the clip and a broad bend beyond the barb. Keep access to both joints for assembly and inspection.
Does the threaded end swivel independently?
No independent swivel collar is shown on this male adapter. The hex shoulder and flange are part of its body. Follow the equipment’s instructions when assembling and sealing the plastic thread, and plan the hose position so it is not twisted or pulled tight. Support the run and inspect the completed threaded and hose joints with water.
Product information & technical details
| SKU | POND40B15BSPMSTR001 |
|---|---|
| Product type | |
| BSP thread size | 1.5" |
| Thread gender | Male |
| Barb size | 40mm (1.5") |
| Colour | Black |
| Material | Plastic |
|---|---|
| Connection layout | Straight 40mm hosetail to 1½-inch BSP male thread |
| Overall length | 80mm |
| Hosetail section length | 50mm |
| External thread diameter | Approximately 47.8mm; nominal 1½-inch BSP |
| Contents | One adapter; hose, clips and equipment 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.