SPHERICAL VALVES OVERHAUL

Gordola power plant (Verzasca SA) - 2022 - IN PROGRESS

 
 
 

In 2022 Tenconi SA carried out the overhaul of the three spherical valves of the Gordola power plant (Verzasca SA).

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

This was followed by a pressure test of the valve and finally by testing it in presence of the customer.

Technical characteristics

  • DN: 1400

  • PN: 30 bar

  • Test pressure 55 bar

  • Weight: approx. 32 tons (without servomotor approx. 27 tons)

 

Subject: Spherical valve

Location: Gordola

Genre: Overhaul

Year: 2022

Client: Verzasca SA - Central Gordola

Manufacturer: Hydro-Progress AG

Year of manufacture: 1963

Construction: Single casing with shafts attached to the rotating body by bolts and a seal ring