Mark McNeill

Stream-Flo Industries Ltd. manufactures wellhead and Christmas tree equipment, gate valves and check valves. It manufactures oilfield equipment which includes a full line of check valves and all components of wellheads and Christmas trees used in upstream oil and gas exploration and production. The company offers research and development, manufacturing, after sales, customer property management and specialty welding and cladding services. It has offices in Abu Dhabi, Beeville, Brooks, Cheyenne, Claysville, Dubai, Edmond, Edmonton, Edson, Estevan, Fort McMurray, Fort Nelson, Fort St. John, Granbury, Grande Prairie, Hassi Messaoud, Houston, Indiana, Jakarta, Kilgore, Kindersley, Longview, Midland, Rainbow Lake, Rifle, Slave Lake and Williamsport. Stream-Flo Industries was founded by Duncan J. McNeill in 1962 and is headquartered in Edmonton, Canada.

Master Flo Valve, Inc. provides surface and subsea flow management solutions for the global oil and gas industry. Its products include choke valves, control valves, subsea choke valves, trim selection and master flo patents. The firm also offers pre sales technical support, solution engineering, aftermarket service & support, remanufacturing, training & education and customer property management services. The company was founded in 1979 and is headquartered in Edmonton, Canada.

Founded in 1985, Master Flo Valve Co. (UK) Ltd. is a British company that manufactures and supplies chock valves. Part of Master Flo Valve, Inc., the company is based in London, UK.