Tavlit Nut Lock Coupler 16mm – 25mm (NL1625)
Ensure a rock-solid connection for your watering system with the Tavlit Nut Lock Coupler (16mm x 25mm). This professional-grade reduction joiner is designed to provide a leak-proof bridge between different pipe diameters, even under challenging conditions.
Why Choose the Tavlit NL1625 Nut Lock Coupler?
The Tavlit NL1625 is a high-performance compression fitting specifically engineered for connecting 16mm drip line or LDPE pipe to 25mm supply mains. Unlike standard barbed fittings that can blow off under pressure, the Nut Lock mechanism “bites” down on the pipe, making it the go-to choice for UK installers dealing with fluctuating water pressures.
Key Features:
- Mechanical Nut Lock Security: The threaded nut ensures the pipe is clamped firmly against the barb, preventing leaks and accidental disconnections.
- UV Stabilised Materials: Built to last in the British outdoors, this fitting is made from UV-resistant polypropylene that won’t become brittle over time.
- Simple Hand-Tightening: No need for specialist tools or jubilee clips. Just slide the nut, push the pipe home, and tighten by hand for a secure seal.
- Professional Versatility: Ideal for allotments, domestic gardens, commercial nurseries, and greenhouse irrigation.
- Compatibility: Connects standard 16mm irrigation pipe to 25mm MDPE or LDPE hose.
Technical Specifications:
- Brand: Tavlit
- Product Code: NL1625
- Size: 16mm x 25mm
- Fitting Type: Nut Lock Reducing Coupler
- Material: Heavy-duty Polypropylene
- Max Operating Pressure: 4 Bar (60 PSI)
Installation Advice:
For a perfect fit, ensure the pipe is cut clean and square. On colder mornings, if the pipe feels stiff, softening the end in a flask of warm water will make it much easier to push onto the internal barb before locking the nut.

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