A valve with a disc not attached to the spindle. The disc must have wings or guide to ensure it seats correctly when the valve is closed. The disc will reseat automatically if a reverse flow of liquid occurs.
Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers.