BiS Valves Ltd.
UK. Manufactures variety of check, directional flow control, pressure relief, safety, and solenoid valves. Applications include offshore oil and gas, hydraulic power, civil engineering, and emission control industries.
http://www.bisvalves.co.uk/

Airdro srl
Offers oil hydraulic components in sizes 02, 03, and 05: 4-way solenoid operated valves, and stackable flow control valves.
http://www.aidro.it/english_version.htm

Virgo Engineers
Engineering firm that specializes in manufacturer of flow control solutions including ball valves, butterfly valves, actuators and valve automation systems.
http://www.virgoengineers.com/

Process Development and Control, Inc.
PDC, Inc. Butterfly Damper Valve manufacturer. Metal Seated & Elastomer Lined Butterfly Valves. Customized to your specifications.
http://www.pdcvalve.com

Bush & Wilton, Inc.
Bush and Wilton manufactures a wide range of valves for dry material handling applications. Valve types include rotary valves, slide gate valves, diverter valves, pinch valves, butterfly valves, pipe corners and bends.
http://www.bushandwilton.com/

F. S. Welsford Company
The F.S. Welsford Company is a premier distributor and manufacturers representative for process control equipment.
http://www.fswelsford.com

Robins Flotech Ltd.
Robins FloTech Ltd in Surrey British Columbia Canada for control valves air valves check valves plug valves butterfly valves strainers valve actuators flow meters valves meters strainers back flow preventers controls systems singer valve val-matic crane lindsey tate andale mueller auma sf equipment water specialties link pac kitz rfl
http://www.bannertown.com/robinsflotech.htm

Ross Valve Manufacturing Co., Inc.
Manufactures electric, pressure reducing and sustaining, flow control, relief, surge control, float valves and strainers.
http://www.rossvalve.com/

TransAM
Windows based hydraulic transient analysis (i.e., waterhammer) model for pipe systems with pumps, turbines, flow control valves, tanks, reservoirs, vacuum relief valves, air chambers, and pressurized surge tanks.
http://www.hydratek.com

Texcel
Level & flow controls, pinch valves, check valves and oil in water monitoring equipment
http://www.texcel.uk.com/