Masoneilan (Baker Hughes)

Masoneilan, founded in 1882 by William Mason in Massachusetts, is one of the oldest control valve manufacturers in continuous operation and today operates as a brand of Baker Hughes following that company's acquisition of GE's measurement and control assets. The brand's engineering reputation rests on severe-service control valve expertise: anti-cavitation and noise-attenuating trim designs, high-pressure steam valves for power stations, compressor anti-surge valves, and the classic 784, 35002 and 87/88 series globe bodies that have processed hydrocarbons for generations. Masoneilan's digital positioners — notably the SVI series — brought self-diagnostics and HART communication to valve control, and remain widely installed across oil and gas and chemical plants. The portfolio also includes level instruments and pneumatic control devices inherited from the Dresser and GE eras. Baker Hughes positions Masoneilan valves alongside its compression and gas technology businesses, giving project developers a single-source path from gas turbines and compressors to the control valves that protect them. For engineers facing cavitation, noise or high-differential control valve problems, Masoneilan trim engineering is among the most respected resources in the industry.