VF3 BUTTERFLY VALVE OVERHAUL

In 2020 Tenconi SA carried out the overhaul       of the VF3 butterfly valve and disassembly pipe at the Luzzone hydroelectric plant.

First, the valve was disassembled and cleaned. Then, all components were repaired, repainted and reassembled in their original position.

This was followed by the operational test and finally by testing it  in the presence of the customer.

Work performed

• Valve and control gear unit disassembling and cleaning

• Non-destructive testing

• Repair of defects

• Restoration of the anticorrosive treatment

• Reassembly with gasket replacement

• Valve movement tests

• Testing in the presence of the customer

Technical characteristics

• NPS: 1'400 mm

• Rated pressure: -

• Weight: 5'500 kg (valve)