Free delivery for purchases over €80 in mainland France (excluding spas and Corsica)
Discount: Male 3/4" (21mm) to Male 3/4" (16mm fits into 3/4" hose)
Worldwide delivery
100% compatible parts
2-year warranty (1 year for professionals)
| Designation | 3/4 Inch Barbed Hose Coupler |
| Type | Male to Male Reduction |
| Configuration | 3/4" (21 mm) to 3/4" (16 mm, fits inside a 3/4" hose) |
| Total Length | 67 mm |
| Outer Diameter Side 1 | 21 mm |
| Outer Diameter Side 2 | 16 mm |
| Connection Type | Barbed (M+ on both sides, insert inside a 3/4" hose) |
| Shape | Straight |
| Construction | One-piece |
This coupler features two M+ barbed ends, meaning each end fits inside a 3/4-inch hose. It allows for a reduction between a 21 mm side and a 16 mm side, with a total length of 67 mm. The barbed ends ensure a secure fit within the flexible hose.
We particularly recommend this coupler if you are using flexible hoses to ensure better stability. Use a hose clamp and adhesive to more easily and durably adapt the coupler to the hose. If your piping is flexible 3/4 inch, a smooth coupler may adapt more easily than this barbed model.
Verify that your hose is indeed 3/4 inch and compatible with internal insertion. Check the diameters of 21 mm and 16 mm as well as the total length of 67 mm to confirm fit. This model is designed to be inserted inside a flexible hose.
Insert each M+ barbed end inside the corresponding 3/4-inch hose. For lasting fixation, use a hose clamp and suitable adhesive. Ensure the coupler is correctly fitted before putting it back into service.
1 3/4 Inch Barbed Hose Coupler, male 3/4" (21 mm) to male 3/4" (16 mm) reduction, length 67 mm, with two M+ barbed ends.
Does this coupler insert inside the hose?
Yes, both ends are M+ type, meaning they fit inside a 3/4-inch hose. It is designed for internal insertion and not for external hose mounting.
Should I use a fixing accessory?
It is recommended to use a hose clamp and adhesive for a more durable fit. This combination facilitates adaptation and reinforces the connection's durability over time.
What are the possible delivery methods?
Delivery depends on the product, your country, and your address. Depending on the order, shipping can be handled by DPD, GLS, Colissimo, or DHL. The exact options are displayed in your cart.
How can I track my package?
You will receive email notifications at different stages, with a tracking link or number upon shipment. You can also check your customer account.
Can I return the product if I made a mistake?
A return is possible within 14 days after receipt. For industry professionals, this period can be extended to 60 days.
What payment methods are accepted?
Payment can be made by credit card, PayPal, 4X PayPal, bank transfer, or check. For a bank transfer, shipping occurs after funds are received.
Free payment by credit card
Only for individuals residing in France. French PayPal account required. Payment in 4X is available subject to acceptance, for purchases from 30 € to 2 000 €. A credit is a binding commitment and must be repaid, check your ability to repay. See the 4X Payment Terms and Conditions. Credit offered by PayPal (Europe) S.à r.I. et Cie. S.C.A.. 22-24 Boulevard Royal. L-2449, Luxembourg, R.C.S. Luxembourg B 118 349, which is duly licensed as a Luxembourg credit institution and is under the prudential supervision of the Luxembourg supervisory authority, the Commission de Surveillance du Secteur Financier. This information is provided by PayPal.
