Neles Oyj provides flow control solutions and services worldwide. It offers control, on-off, emergency shutdown, butterfly, ball, globe, segment, and eccentric rotary plug valves; pneumatic, electric, and manual actuators; limit switches; and valve controllers, as well as valve parts. The company also provides valve repairs and maintenance, PID tuning and process control, and maintenance planning and lifecycle services.

It offers its products to chemicals, energy, gas processing and LNG, industrial gas, marine, mining, metals and steel processing, pipeline, pulp, paper and bioproducts, refining, and water and wastewater industries. The company was formerly known as Metso Oyj and changed its name to Neles Oyj. Neles Oyj was founded in 1956 and is headquartered in Vantaa, Finland.

As of April 1, 2022, Neles Oyj operates as a subsidiary of Valmet Oyj.