According to Alexander’s Gas & Oil Connections:
The market leader positions in the industry changed considerably with the acquisition of Invensys Flow Control by Flowserve (FLS). The combination is now the second largest supplier with a 4% market share. This compares to a 6 % share for the leader Tyco (TYC). Emerson (EMR) with 3 % is in the third position. The industry is very splintered with more than 1,000 companies carving out niches.