laboratory gas valves for sale, brand-new and used.

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Lot of 2 Matched, Vintage New Old Stock JAN 5703WB subminiature vacuum tubes made by Raytheon in USA. Matching codes from 1982, Black plate, Foil Getter. The WB is the quality ruggedized version of the 5703 made for the military.

Lot of 2, Vintage New Old Stock JAN 6112 subminiature vacuum tubes made by Sylvania in USA. Code 7913 EBT on both tubes, Black plates, Round Getter, Bridged Filament. The technician these tubes belonged to liked to put 2-4 tubes in each tube box to save space in his caddy.

Lot of 2, Vintage New Old Stock JLRV 6021 subminiature electron tubes made by GE in Canada. Code 59 29 on both tubes, Gray vented plates, Tilted halo getter. Tubes are excellent, boxes are rough....

Lot of 2, Vintage New Old Stock 6CG7 6FQ7 vacuum tubes made by General Electric in USA. Code MC 188-5 on both tubes, Long Gray Vented plates, Halo Getter, Copper rods, Bright steel blue pins, Bridged filament. These tubes come from a factory case of 100 and are in excellent condition...

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