Description
A 38mm hose outlet
Start the hose route with a 90° turn at a suitable water butt or tank connection.
This black plastic elbow combines a 1½-inch BSP male thread with a 38mm hose barb. Back nut and washer included.
One elbow supplied. Hose, clips and tools are separate.
Plan the outlet position
Check the tank mounting and hose route together before fitting.
Allow room at the wall
Check wall thickness, washer seating and access to the retaining nut. An existing threaded outlet must match the 1½-inch BSP male connection. For a new opening, check the actual fitting and mounting arrangement rather than drilling from the nominal thread size.
Leave room for the hose
The elbow sets the direction at the tank, but the hose still needs space for gentle bends. Choose suitable flexible pipe with a nominal 38mm internal diameter and support it so it does not pull on the connector.
Keep the overflow clear
Plan a suitable discharge point and keep the route unobstructed. This is an outlet fitting, not a complete overflow kit or an automatic control. Check the tank-wall seal and hose connection with water after installation.
Two connections to check
The parts photograph shows the male threaded stem, retaining nut and mounting washer. The other end is the hose outlet, turned through a right angle.
1½-inch BSP describes the tank thread; 38mm describes the nominal hose bore. Neither is a measurement of the outside of an assembled hose connection or an instruction for cutting a tank opening.
38mm corrugated PVC hose is available separately. Check the actual hose fit on the ribbed barb and choose a clip using the outside diameter once assembled.
38-43mm double-wire hose clamps are one option where that measured diameter is within their range. Check current availability and suitability before ordering; do not force an undersized clip or crush the pipe.
Keep the washer seated evenly on a suitable surface, avoid excessive force on the plastic and inspect the completed joints after the hose has settled.
Fitting questions
Does 1½-inch BSP mean I should drill a 38mm hole?
No. BSP is a nominal thread designation. The 38mm figure here describes the hose's nominal internal diameter at the other end of the fitting. Check the actual threaded stem, mounting parts, tank wall and washer seating before choosing an opening size.
What comes with this connector?
One black plastic 90° elbow is supplied with its retaining back nut and mounting washer. It has a 1½-inch BSP male tank thread and a barb for suitable nominal 38mm flexible hose. Hose, securing clips, tools and any additional sealing materials are separate.
Will this fit my water butt's existing outlet?
Check the actual outlet and mounting area first. A threaded connection must match the 1½-inch BSP male thread. A plain opening must suit the connector and mounting parts, with appropriate wall thickness, an even washer seat and access to the nut. Water butt designs vary.
Can it be used on a pressurised water supply?
No pressure rating is specified for this fitting, so do not assume suitability for mains pressure or a pressurised pump outlet. Use components with confirmed ratings for those systems. For a water butt outlet, support the hose and test both the tank-wall seal and hose joint with water.
Product information & technical details
| SKU | BUTT-ELB-15BSPM-15B001 |
|---|---|
| Product type | |
| BSP thread size | 1.5" |
| Thread gender | Male |
| Barb size | 38mm (1.5") |
| Colour | Black |
|---|---|
| Material | Plastic |
| Connection angle | 90° elbow |
| Supplied mounting parts | Back nut and washer |
| Quantity supplied | 1 elbow connector |
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.