Watts Regulator Company
- Supply a range of valves for regulators, plumbing and heating, water quality, oil, steam, and industrial markets.
- http://www.watts.com/

Missouri-Kansas Supply Company Inc.
- Distributors for a range of pipes, valves and fittings.
- http://www.mokansupply.com/

Nuova General Instruments
- Production of automatic intervention safety valves, made of brass and stainless steel, with free or controlled discharge, and suitable for every type of fluid. Employed for depressurizing air compressed containers and/or chemical, pharmaceutical, food, oe
- http://www.nuovageneral.it/

Strand Earthquake Consultants
- Consultants and distributors of automatic earthquake gas shutoff valves; seismic switches and alarms; and seismic shutdown systems for fluids, specialty gases, or high-pressure gases.
- http://www.strandearthquake.com/

European valve producer for HVAC use
- European constructor of brass valves. Iso certified. Specializing in brass ball valves according to all the European and US-standards,bibcocks, airvents, safety valves, non return valves, strainers.
- http://www.imt-ch.com

Sun Yeh Electrical Ind. Co., Ltd.
- Manufacture of electric valve actuators, hardware valve, and flow control.
- http://www.valve-actuator.com/

OMB Valves
- Manufacturer of gate, globe, check and ball valve 1/2" to 24" to API602, API6A, API6D, Din, Jis standards. Certified ISO9001 since 1990.
- http://www.ombvalves.com/

Water No Go Valve
- An electronically actuated valve that controls water flow through pipes and plumbing to a house or structure.
- http://www.waternogovalve.com/

FM Mattsson AB
- Thermostatic and pressure balanced water conserving shower valves. Also water conserving faucets. Don't get burned. Marine shower too.
- http://www.safeshower.com/

Suds and Flood Backup Control
- Valve available in four states, intended to stop waste water backflow.
- http://www.sudsnfloodtamer.com

George Fischer, Inc.
- Manual and actuated valves, diaphragm valves, butterfly valves, pressure regulating valves, y-globe valves and y-pattern strainers.
- http://www.us.piping.georgefischer.com/

Gould Solenoid Valves
- Manufacturer of American-made solenoid valves for industrial and commercial applications.
- http://www.gouldvalve.com/

Hammond Valve
- Sells a range of products for plumbing, heating, cooling, and industrial flow control. Products include gate, globe, check, ball and butterfly valves .
- http://www.hammondvalve.com/

Leonard Valve Company
- A leader in the manufacture of thermostatic water mixing valves.
- http://www.leonardvalve.com/

Studor, Inc.
- Studor air admittance valves replace expensive and complex plumbing vent systems that penetrate roofs of most buildings.
- http://www.studor.com/