Description
19mm hose for your pond connections
Plan a new run or replace a section with black corrugated PVC hose, in a nominal 3/4-inch internal bore.
The flexible ribbed wall follows broad bends. Choose the length for your route and check the hosetail fit before assembly.
Available from 1m to 30m. Plain-ended hose supplied; connectors and clips are separate.
Measure inside the hose, not over the ribs
The size is the nominal 19mm internal bore, commonly called 3/4-inch. The reference photograph shows where that measurement is taken.
The exterior is corrugated and the inside has shallow, smoothed ridges. This style is often called smooth-bore pond hose, although the inner wall is not completely flat.
Choose a hosetail designed for this hose bore and construction. Its rib profile and fitting instructions matter too: a shared 3/4-inch label alone does not establish a suitable fit.
Check the fit, then plan the route
Keep each connection accessible while you assemble and test it.
Confirm the hosetail
A hosetail sits inside the hose. Check its intended hose size and profile; do not confuse it with a BSP thread. If the hose will not seat as instructed, stop and check compatibility rather than forcing the joint.
Allow for the bends
Measure along the actual route, including gentle curves and the hose that covers each fitting. Avoid pulling the run tight or putting a sharp bend next to the hosetail. Support the hose so it does not pull on equipment.
Select your length
Choose 1m, 2m, 3m, 4m, 5m, 10m or 30m in the Length dropdown. The hose can be cut to suit the installation. Check the routed length and fitting engagement before making the final cut.
Secure the joint for the hose you use
Hose clips and connectors are sold separately.
Follow the fitting method
Use the securing method specified for the hose and hosetail. A clip must suit the outside of the assembled hose, not just its 19mm internal bore. Corrugations do not create a seal by themselves.
Inspect with water
Check the finished joints before concealing the route. Make sure the hose and fittings suit your equipment’s operating requirements; bore size alone does not establish a pressure or flow rating.
Leave access
Keep enough room to inspect the joints and remove equipment for servicing. A hose connection that remains accessible is easier to check when cleaning a filter or changing the layout.
Questions about fitting the 19mm hose
Will any 3/4-inch connector fit this hose?
No. The hose is nominally 19mm, or 3/4-inch, on the inside. A BSP thread uses a different sizing system, and even hosetails with the same nominal size can have different rib profiles and fitting requirements. Check that the hosetail is intended for this hose type and bore. If it will not seat as instructed, stop and check the parts rather than forcing the connection.
What should I check if a fitting is too tight?
Check the hose bore, the hosetail’s intended hose size and its profile, together with the fitting instructions. The outside of the hose will measure larger than 19mm. Do not treat a partly seated joint as a finished connection or force parts together on the strength of a size label. If you need help, contact us with the fitting details and a clear photo of both parts.
Is this completely smooth inside?
No. It has shallow, smoothed internal ridges and a corrugated exterior. “Smooth bore” is a trade description often used for this style of pond hose, rather than a claim that its inner wall is completely flat. Match the bore and construction to your equipment’s requirements; the description does not establish a particular flow rate or universal compatibility.
Which length and accessories are supplied?
You receive the length selected above: 1m, 2m, 3m, 4m, 5m, 10m or 30m. Connectors, clips, pumps and filters are not included. Photographs illustrate the hose rather than the supplied quantity for every option. Measure along your planned route and allow for curves and the sections that fit over the hosetails before choosing or cutting a length.
Product information & technical details
| SKU | KOI19B001 |
|---|---|
| Product type | |
| Internal diameter | 19mm (3/4") |
| Colour | Black |
| Material | Plastic |
| Hose material | Flexible PVC |
|---|---|
| Wall construction | Corrugated exterior; shallow, smoothed internal ridges |
| Typical applications | Suitable pond pump, filter and water-feature connections |
| Length options | 1m, 2m, 3m, 4m, 5m, 10m or 30m |
| Contents | Selected length of plain-ended hose; clips, fittings, pump and filter not included |
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.