Case Study: a water utility operator renovates a DN1200 main with Hawle Nova Siria couplings

Renovation of the DN1200 main – Nova Siria couplings and Hawle fittings

The water utility operator faced the challenge of renovating a key DN 1200 steel water main with minimal excavation. Their objective was to safely insert a new DN 1000 PEHD pipe into the old line, which required a secure method to stabilize the two pipelines relative to each other without using foam concrete.

Hawle provided a solution using specialized DN 1200/1000 Nova Siria eccentric reduction couplers, along with Hawle butterfly valves and dismantling joints. This approach guaranteed a stable, non-detachable connection capable of withstanding a pull-out force of approximately 3,325,000 N. The customer appreciated the ease of installation and the technical refinement of Hawle's solution, which ensured the long-term reliability and operational safety of the renovated transmission main.