Description
Four hose options for a threaded pond connection
Adapt a 1½-inch BSP female fitting to suitable 20mm, 25mm, 32mm or 40mm hose.
The straight black plastic body combines a male thread, fixed hex shoulder and four graduated hose sections.
One bare connector supplied. Hose, clips, separate nuts and washers are sold separately.
Allow room for the fitting and hose
The reference photo shows approximately 140mm overall and a 100mm stepped section.
The four sections offer 20mm, 25mm, 32mm and 40mm hose options. Choose the section for your hose rather than treating the whole tail as one uniform diameter.
Plan enough space to assemble the threaded end, seat and secure the hose, and form a supported bend beyond it.
Check the thread, step and hose route
Each connection needs to suit the equipment and hose you are using.
Start with the female port
Confirm a 1½-inch BSP female fitting. Follow the equipment’s sealing and tightening instructions for plastic connections. The hex shoulder is fixed to the body, rather than an independent swivel.
Select one hose section
Match the 20mm, 25mm, 32mm or 40mm bore and hose wall profile to the intended step. Confirm the fitting method before any trimming. Size a securing clip around the outside of the seated hose.
Keep the run supported
Arrange a gradual bend without sideways strain at the equipment port. Keep access to both joints and inspect them with water before concealing the hose route.
Questions about the four-step adapter
Does this fit a male or female equipment connection?
The adapter has an exposed 1½-inch BSP male thread, so it needs a matching female BSP fitting. Confirm the thread specification on the pump, filter or other equipment before ordering. A male outlet requires a different connection. The four hose steps describe the opposite end and do not alter the thread size or gender.
Can I use 38mm hose on the 40mm step?
The stated largest hose option on this connector is 40mm. The 38mm and 40mm hose ranges have different nominal internal bores, even where similar inch trade labels are used. Do not assume they are interchangeable. Check the hose’s metric bore, wall profile and fitting instructions against the intended step before selecting or securing it.
How much space will the connector need?
The uncut fitting is approximately 140mm long overall, including a 100mm stepped section, as shown in the dimension photo. The installed hose and access for assembly require additional space. Leave a gradual bend beyond the selected step and keep the threaded joint and any clip accessible. Check the required fitting method before any permanent trimming.
Is this a tank connector with a nut and washer?
This listing supplies the bare male-threaded stepped adapter. A separate backnut and washer, hose and clips are not included. Do not assume that it forms a complete through-wall tank fitting on its own. Match the accessories and sealing method to your equipment’s instructions and check the finished connection with water.
Product information & technical details
| SKU | POND20B25B32B40B15BSPMSTR001 |
|---|---|
| Product type | |
| BSP thread size | 1.5" |
| Thread gender | Male |
| Barb size | 19mm (3/4"), 20mm (3/4"), 25mm (1"), 32mm (1.25"), 40mm (1.5") |
| Colour | Black |
| Material | Plastic |
|---|---|
| Connection layout | Stepped 20mm / 25mm / 32mm / 40mm hosetail to 1½-inch BSP male thread |
| Overall length | Approximately 140mm, uncut |
| Stepped section length | Approximately 100mm |
| 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.