Phamitech International Company Ltd
Exporter of electron tubes, TWT, valves, thyratrons, magnetrons, klystrons, transmitting tubes, heating tubes, vacuum interrupters and X-ray tubes made in China
http://www.phamitech.com

20000 NOS Electron Tubes
NOS and used tubes, rare valves, virtual museum.
http://geocities.com/nikolic_lj_dragan/Tubes/NOSElectronTubes.htm

President Valves & Tubes
Distributors of gate, globe, check, ball, diaphragm, plug valves and strainers.
http://www.presidentvalves.com

Mike's Electric Stuff
Vintage electronics, valves/tubes, lamps, geissler tubes, historic display devices, High voltage, tesla coils and misc.
http://www.netcomuk.co.uk/~wwl/electric.html

TubeTronic
tubetronic.com
http://www.tubetronic.com/

Valves and Fittings UK Ltd
Manufacturer of butterfly valves, couplings, blow and water guns, filters, regulators, lubricators, air compressors, fittings, tubes and hoses, clips and clamps, cylinders and gas stays.
http://www.valvesandfittings.co.uk/

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/

Chemglass
NMR tubes, Caps, valves and NMR tube cleaners.
http://www.chemglass.com/index.htm

Red-White Valves
Balancing Valves, Ball Valves, Butterfly Valves, Regulators and Strainers at Red-White Valve Corp in Lake Forest, California
http://www.redwhitevalveusa.com

Contessi SpA
Equipment for the use of process gases in iron and steelmaking. Cutting, heating and welding equipment.
http://www.contessi.com