Supa Lock™ - threadless connection system

Connecting valves and fittings with a threaded connection can be time-consuming and often, it leaves part of the thread exposed to the medium and the external environment. Over time this will cause corrosion of the uncoated thread and may even result in a leakage. Supa Lock™ solves this problem.

Threadless connection system with full corrosion protection

The patented Supa Lock™ system provides a 100% corrosion free joint combined with fast and easy assembly with maximum flexibility. Thanks to its simple design, Supa Lock™ offers long term safety with optimum protection against corrosion and leaks and also protection against accidental disassembly of the joint when the pipeline is pressurised.

The wide Supa Lock™ range consists of valves, tapping saddles and fittings in ductile iron with a heavy duty epoxy coating complying with the strict GSK requirements. Furthermore, ball valves and fittings in dezincification resistant brass complying with the new EU directive for material used in drinking water installations are part of the range.

Download Supa Lock™ range product overview

Easy two-step assembly

After having lubricated the O-rings, the Supa Lock™ spigot end is pushed into the Supa Lock™ socket end, the safety retainer is clicked on.

Self-locking safety retainer

Supa Lock™ is designed as a tensile joint and withstands pressures up to PN 16 x 1.5. The safety retainer is designed with an edge, which makes it self-locking whenever there is pressure in the pipeline. Therefore, no accidental disassembly can take place. The safety retainer has two finger knobs for easy assembly and disassembly.

Joints with heavy duty O-rings provide extra safety 

All Supa Lock™ joints are designed with heavy duty O-rings to secure the joint against leaking. The large O-rings provide extra safety when taking into account that a minor permanent deformation of the O-rings is to be expected over the lifetime of the product. Also, when the joint is exposed to bending as a result of ground movements, the large O-rings provide maximum safety. 

No rotation of valves and connectors

Free rotation is restricted on the valves and the threaded connectors used for drilling machines to enable effective drilling. Small cast notches placed on the outer rim of the socket end and on the inner rim of the spigot end interlock and prevent rotation.

360° rotation of the fittings gives maximum flexibility

The design allows for a 360° rotation of the fittings, which is a unique feature only offered by the Supa Lock™ system. The free rotation of the joint allows the installer to direct the service pipe outlet in any direction from the main pipe, thus avoiding collision with other pipes or obstacles in the trench.

Easy mounting of IoT sensors

The Supa Lock™ sensor fitting is easily mounted in a Supa Lock™ tapping saddle and allows for attachment of a temperature sensor and a pressure sensor in only one tapping. AVK Smart Water battery-operated IoT sensors provide reliable data from the distribution network directly into any preferred IT system and thereby paves the way for reduced water loss from leaks, increased workflow efficiency and a clearer overview of network conditions.

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Supa Lock™ threadless service connection system for utility line construction

An extensive project of constructing utility lines near Prague, the capital of the Czech Republic, will be supplied with AVK products.


Supa Lock™ threadless connection system

See how our Supa Lock™ system provides a 100% corrosion free joint combined with fast and easy assembly with maximum flexibility.

Download brochure

Supa Lock™ - threadless connection system

Get an introduction to our threadless connection system and details about all the valves and fittings


How to make under pressure tapping with a Supa Lock™ tapping saddle with blade shut-off.