SK61 Series full-welded ball valves were used for Thermal Pipeline in Novocheboksarsk, Russia

Project Requirements:
Customer required installation of ball valve on the thermal pipeline, which had been designed for underground use with a full-welded structure. The ball valves must be capable of handling a working pressure of 2.5 MPa while preventing medium leakage. Additionally, valve feet need to be produced according to the provided drawings and equipped with steel wire ropes to secure the valve. The valve should be with worm gear and connection by ISO5211 under electric actuator.

Seallon`s Solutions:
● Seallon selected a valve body treated with corrosion protection coating thickness: 100-120μm spraying process for the underground condition; 
● To reduce friction and increase the valve's service life, a fixed-ball design had been adopted; 
● In order to achieve zero leakage under high pressure and temperature, we used high-performance sealing material PTFE+C (carbon fiber) to ensure excellent sealing up to 200°C;
● A multi-stage worm reducer was provided, which minimized the torque after deceleration, allowing customer to choose smaller specifications of electric actuators and save procurement costs.

KEY WORDS: 
#SK61, #full-welded ball valve, #Heating, #underground, #fixed ball, #PTFE+C, #multi-stage worm reducer