Description
Match your hose to a threaded pond fitting
A 20mm, 25mm or 32mm stepped hosetail and a 1-inch BSP male thread in one straight black plastic adapter.
Choose the hose section for your installation, then connect the threaded end to a matching female fitting on compatible equipment.
One bare connector supplied. Hose, clips, separate nuts and washers are not included.
Size the fitting and the space around it
The uncut connector measures approximately 95mm overall, with a 70mm stepped section, as shown in the reference photograph.
The threaded end is 1-inch BSP male, labelled 33.25mm across. It needs a matching female thread, independently of which hose step you use.
Leave room for the hose to seat, bend gradually and remain accessible for inspection.
Build the connection in three checks
Confirm the equipment thread, hose fit and supported route.
Check the female fitting
Use a matching 1-inch BSP female port on compatible equipment. Follow the equipment’s sealing and tightening instructions for the plastic thread. The fixed shoulder is not a swivel collar.
Match the hose bore
Choose the 20mm, 25mm or 32mm section for your hose and check its wall profile. Confirm the fitting method before any permanent trimming. A clip is sized around the outside of the seated hose.
Support and inspect
Keep the hose run supported without a sharp bend or sideways pull at the adapter. Leave access to both connections and check them with water before covering or concealing the route.
Questions about the 20/25/32mm adapter
Is the 1-inch thread the same size as the 25mm hose step?
They describe different ends of the fitting. The 25mm figure is a nominal hose bore, while 1-inch BSP identifies the threaded connection. The male thread is labelled 33.25mm across in the reference photo. Match the equipment’s specified BSP size and gender, then choose the hose step separately.
Which of the three steps should the hose use?
Use the section intended for your hose’s nominal internal bore: 20mm, 25mm or 32mm. Check its wall profile and the fitting instructions as well as the size label. The connector makes one hose connection, not three branches. Confirm the seating and securing method before any permanent trimming; do not copy cut positions from another fitting.
Will the whole connection fit within a 95mm space?
The 95mm measurement is the uncut connector’s overall length. The hose, bend radius and working access need additional space. The reference photo also shows a 70mm stepped section. Plan enough room to assemble the thread, seat and secure the hose, and inspect the joint without forcing a sharp bend beside the equipment.
Are a nut and red washer included?
No. This is the bare male-threaded connector, rather than the separate nut-and-washer kit. Hose and clips are also supplied separately. Check your equipment’s sealing requirements and select the appropriate accessories for that installation. Support the hose so it does not pull sideways on the threaded connection.
Product information & technical details
| SKU | POND20B25B32B1BSPMSTR001 |
|---|---|
| Product type | |
| BSP thread size | 1" |
| Thread gender | Male |
| Barb size | 19mm (3/4"), 20mm (3/4"), 25mm (1"), 32mm (1.25") |
| Colour | Black |
| Material | Plastic |
|---|---|
| Connection layout | Stepped 20mm / 25mm / 32mm hosetail to 1-inch BSP male thread |
| Overall length | Approximately 95mm, uncut |
| Stepped section length | Approximately 70mm |
| Body design | Black plastic; fixed hex shoulder |
| Contents | One bare connector; hose, clips, separate nut and washer 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.