List of VT valves
Due to the numbering schemes in use there are three variant classifications
of VTxyz valves; the USA types, the UK military types (VT = Valve, Transmitting),
and the UK GPO types. In the cases tabulated below there are more than
one valve for a given VT marking. This list was compiled from the CV Register
and several other sources.
| VT number |
Made for/by |
CV equivalent |
Commercial
number |
Description |
| VT1 |
|
|
WE-203A |
|
| VT2 |
|
|
WE-205B |
|
| VT3 |
|
|
|
|
| VT4A |
|
|
|
|
| VT4B |
|
|
211 |
|
| VT4C |
|
|
JAN 211 (VT4C) |
|
| VT5 |
|
|
WE-215A |
|
| VT6 |
|
|
212A |
|
| VT7 |
|
|
WX-12 |
|
| VT8 |
|
|
UV-04 |
|
| VT10 |
|
|
|
|
| VT11 |
|
|
|
|
| VT12 |
|
|
|
|
| VT13 |
|
|
|
|
| VT14 |
|
|
|
|
| VT16 |
|
|
|
|
| VT17 |
GPO |
CV1608 |
|
|
| USA |
CV640 |
860 |
|
| VT18 |
|
|
|
|
| VT19 |
GPO |
CV1612 |
|
|
| USA |
CV641 |
861 |
|
| VT20 |
|
|
|
|
| VT21 |
|
|
|
|
| VT22 |
|
|
204A |
|
| VT23 |
|
|
|
|
| VT24 |
GPO |
CV1636 |
|
|
| USA |
CV2675 |
864 |
|
| VT25 |
UK |
CV1025 |
|
|
| GPO |
CV1637 |
|
|
| USA |
CV603 |
10 |
|
| VT25A |
|
|
10 special |
|
| VT26 |
UK |
CV1026 |
|
|
| GPO |
CV1600 |
|
|
| USA |
|
26 |
|
| VT27 |
GPO |
CV1601 |
|
|
| USA |
CV604 |
30 |
|
| VT28 |
|
|
24, 24A |
|
| VT29 |
|
|
27 |
|
| VT30 |
UK |
CV1030 |
|
|
| USA |
CV750 |
0-1A |
|
| VT31 |
UK |
CV1031 |
|
|
| GPO |
CV1638 |
|
|
| USA |
CV947 |
31 |
|
| VT32 |
|
|
|
|
| VT33 |
GPO |
CV1642 |
|
|
| USA |
CV949 |
33 |
|
| VT34 |
UK |
CV1034 |
|
|
| GPO |
CV1614 |
|
|
| USA |
|
207 |
|
| VT35 |
GPO |
CV1615 |
|
|
| USA |
CV1752 |
35/51 |
|
| VT36 |
GPO |
CV1602 |
|
|
| USA |
CV1775 |
36 |
|
| VT37 |
|
|
37 |
|
| VT38 |
GPO |
CV1645 |
|
|
| USA |
CV712 |
38 |
|
| VT39 |
|
|
869 |
|
| VT39A |
|
|
869A |
|
| VT40 |
GPO |
CV1647 |
|
|
| USA |
CV2501 |
40 |
|
| VT41 |
|
|
851 |
|
| VT42 |
|
|
872 |
|
| VT42A |
|
|
872A special |
|
| VT43 |
|
|
845 |
|
| VT44 |
|
|
32 |
|
| VT45 |
|
|
45 |
|
| VT46 |
UK |
CV1046 |
|
|
| GPO |
CV1616 |
|
|
| USA |
(CV32) |
866 |
|
| VT46A |
|
|
866A |
|
| VT47 |
UK |
CV1047 |
|
|
| GPO |
CV1603 |
|
|
| USA |
CV1772 |
47 |
|
| VT48 |
|
|
41 |
|
| VT49 |
|
|
39/44 |
|
| VT50 |
UK |
CV1050 |
|
|
| USA |
CV2533 |
50 |
|
| VT51 |
UK |
CV1051 |
|
|
| GPO |
CV1617 |
|
|
| USA |
|
841 |
|
| VT52 |
UK |
CV1052 |
|
|
| GPO |
(CV1025) |
|
|
| USA |
CV596 |
45 special |
|
| VT53 |
|
|
(VT42A) |
|
| VT54 |
GPO |
CV1618 |
|
|
| USA |
CV1751 |
34 |
|
| VT55 |
|
|
865 |
|
| VT56 |
GPO |
CV1648 |
|
|
| USA |
CV611 |
56 |
|
| VT57 |
GPO |
CV25 |
|
|
| USA |
CV612 |
57 |
|
| VT58 |
UK |
CV1058 |
|
|
| GPO |
CV1619 |
|
|
| USA |
CV613 |
58 |
|
| VT60 |
UK |
CV1060 |
(VT60) |
|
| GPO |
CV1605 |
|
|
| USA |
|
850 |
|
| VT60A |
|
|
(VT60A) |
|
| VT61 |
UK |
CV1061 |
(VT61) |
|
| GPO |
CV1609 |
|
|
| VT61A |
|
|
(VT61A) |
|
| VT62 |
UK |
CV1062 |
|
|
| GPO |
CV1606 |
|
|
| USA |
CV621 |
801, 801A |
|
| VT63 |
|
|
46 |
|
| VT64 |
|
|
800 |
|
| VT65 |
GPO |
CV1649 |
|
|
| USA |
CV582 |
6CG |
|
| VT65A |
|
|
6C5G |
|
| VT66 |
GPO |
CV1650 |
|
|
| USA |
CV1912 |
6F6 |
|
| VT66A |
|
|
6F6G |
|
| VT67 |
|
|
30 special |
|
| VT68 |
GPO |
CV1651 |
|
|
| USA |
CV1891 |
6B7 |
|
| VT69 |
GPO |
CV1652 |
|
|
| USA |
CV1900 |
6D6 |
|
| VT70 |
|
|
6F7 |
|
| VT72 |
|
|
842 |
|
| VT73 |
UK |
CV1073 |
|
|
| USA |
CV639 |
843 |
|
| VT74 |
UK |
CV1074 |
|
|
| GPO |
CV1654 |
|
|
| USA |
CV1864 |
5Z4 |
|
| VT75 |
UK |
CV1075 |
|
|
| GPO |
CV1655 |
|
|
| USA |
CV614 |
75 |
|
| VT76 |
UK |
CV1076 |
|
|
| USA |
CV615 |
76 |
|
| VT77 |
|
|
77 |
|
| VT78 |
GPO |
CV1656 |
|
|
| USA |
CV2544 |
78 |
|
| VT79 |
|
|
KT8C |
|
| VT80 |
UK |
CV1080 |
|
|
| USA |
CV617 |
80 |
|
| VT81 |
UK |
CV1081 |
|
|
| GPO |
CV1659 |
|
|
| VT82 |
GPO |
CV1660 |
|
|
| VT83 |
|
|
83 |
|
| VT84 |
|
|
84 / 6Z4 |
|
| VT86 |
GPO |
CV1662 |
|
|
| USA |
CV1942 |
6K7 |
|
| VT86A |
|
|
6K7G |
|
| VT86B |
|
|
6K7GT |
|
| VT87 |
GPO |
CV1663 |
|
|
| USA |
CV1951 |
6L7 |
|
| VT87A |
|
|
6L7G |
|
| VT88 |
UK |
CV1088 |
|
|
| GPO |
CV1664 |
|
|
| USA |
CV1963 |
6R7 |
|
| VT88A |
|
|
6R7G |
|
| VT88B |
|
|
6R7GT |
|
| VT89 |
UK |
CV1089 |
|
|
| GPO |
CV1665 |
|
|
| USA |
CV833 |
89 |
|
| VT90 |
UK |
CV1090 |
|
|
| GPO |
CV1732 |
(PO VT90) |
|
| USA |
CV1930 |
6H6 |
|
| VT90A |
|
|
6H6GT |
|
| VT91 |
GPO |
CV1038 |
|
|
| USA |
CV1936 |
6J7 |
|
| VT91A |
|
|
6J7GT |
|
| VT92 |
GPO |
CV1735 |
|
|
| USA |
CV588 |
6Q7 |
|
| VT92A |
|
|
6Q7G |
|
| VT93 |
UK |
CV1093 |
|
|
| GPO |
CV1666 |
|
|
| USA |
CV1894 |
6B8 |
|
| VT93A |
|
|
6B8G |
|
| VT94 |
UK |
CV1094 |
|
|
| GPO |
CV1667 |
|
|
| USA |
CV1933 |
6J5 |
|
| VT94A |
|
|
6J5G |
|
| VT94B |
|
|
6J5 specialy selected |
|
| VT94C |
|
|
6J5G specially selected |
|
| VT94D |
|
|
6J5GT |
|
| VT95 |
GPO |
CV1668 |
|
|
| USA |
CV1831 |
2A3 |
|
| VT96 |
UK |
CV1096 |
|
|
| USA |
CV1957 |
6N7 |
|
| VT96B |
|
|
6N7 specially selected |
|
| VT97 |
|
|
5W4 |
|
| VT98 |
UK |
CV1098 |
(VT98) |
|
| GPO |
CV1669 |
|
|
| USA |
CV504 |
6U5 / 6G5 |
|
| VT98A |
|
|
(VT98A) |
|
| VT99 |
|
|
6F8G |
|
| VT100 |
GPO |
(CV1670) |
|
|
| USA |
(CV124) |
807 |
|
| VT100A |
|
|
807 modified |
|
| VT101 |
|
|
837 |
|
| VT102 |
|
|
cancelled |
|
| VT103 |
|
|
6SQ7 |
|
| VT104 |
UK |
CV1104 |
(VT104) |
|
| GPO |
CV1040 |
|
|
| USA |
CV546 |
12SQ7 |
|
| VT105 |
UK |
CV1105 |
(VT105) |
|
| GPO |
CV1673 |
|
|
| USA |
CV1969 |
6SC7 |
|
| VT106 |
GPO |
CV1674 |
(VT106) |
|
| USA |
CV623 |
803 |
|
| VT107 |
GPO |
CV1675 |
|
|
| USA |
CV510 |
6V6 |
|
| VT107A |
|
|
6V6GT(/G) |
|
| VT107B |
|
|
6V6G |
|
| VT108 |
|
|
450TH |
|
| VT109 |
GPO |
CV1677 |
|
|
| USA |
CV1798 |
2051 |
|
| VT111 |
GPO |
CV1679 |
|
|
| USA |
CV836 |
5BP4 / 1802P4 |
|
| VT112 |
GPO |
CV1680 |
|
|
| USA |
CV660 |
6AC7 / 1852 |
|
| VT114 |
UK |
CV1114 |
|
|
| GPO |
CV1682 |
|
|
| USA |
CV1846 |
5T4 |
|
| VT115 |
GPO |
CV1683 |
(PO VT115) |
|
| USA |
CV1948 |
6L6 |
|
| VT115A |
|
|
6L6G |
|
| VT116 |
GPO |
CV1684 |
|
|
| USA |
CV591 |
6SJ7 |
|
| VT116A |
|
|
6SJ7GT |
|
| VT116B |
|
|
6SJ7Y |
|
| VT117 |
|
|
6SK7 |
|
| VT117A |
|
|
6SK7GT |
|
| VT118 |
|
|
832 |
|
| VT119 |
GPO |
CV1169 |
|
|
| USA |
(CV597) |
2X2 / 879 |
|
| VT120 |
GPO |
CV1688 |
|
|
| USA |
(CV1095) |
954 |
|
| VT121 |
|
|
955 |
|
| VT122 |
|
|
530 |
|
| VT123 |
|
|
RCA A5586 superceded by VT128 |
|
| VT124 |
|
|
1A5GT |
|
| VT125 |
GPO |
CV1689 |
|
|
| USA |
CV1805 |
1C5GT |
|
| VT126 |
GPO |
CV1690 |
|
|
| USA |
CV573 |
6X5 |
|
| VT126A |
|
|
6X5G |
|
| VT126B |
|
|
6X5GT |
|
| VT127 |
UK |
CV1127 |
(VT127) |
|
| GPO |
(CV1187) |
|
|
| |
|
special |
|
| VT127A |
GPO |
|
(PO VT127A) |
|
| |
|
(VT127A) |
|
| VT128 |
GPO |
CV1692 |
|
|
| USA |
CV2715 |
1630 |
|
| VT129 |
|
|
304TL |
|
| VT130 |
|
|
250TL |
|
| VT131 |
GPO |
CV1168 |
|
|
| USA |
CV543 |
12SK7 |
|
| VT132 |
|
|
12K8 special |
|
| VT133 |
GPO |
CV1695 |
|
|
| USA |
CV700 |
12SR7 |
|
| VT134 |
|
|
12A6 |
|
| VT135 |
|
|
12J5GT |
|
| VT135A |
|
|
12J5 |
|
| VT136 |
GPO |
CV1118 |
|
|
| USA |
CV659 |
1625 |
|
| VT137 |
GPO |
CV1081 |
|
|
| USA |
CV1755 |
1626 |
|
| VT138 |
GPO |
CV1623 |
|
|
| USA |
CV1756 |
1629 |
|
| VT139 |
GPO |
CV399 |
|
|
| USA |
(CV216) |
VR150/30 |
|
| VT140 |
GPO |
CV1166 |
|
|
| USA |
(CV662) |
1628 |
|
| VT141 |
|
|
531 |
|
| VT142 |
|
|
WE-39DY1 |
|
| VT143 |
GPO |
CV1696 |
|
|
| USA |
CV625 |
805 |
|
| VT144 |
GPO |
CV1371 |
|
|
| USA |
(CV26) |
813 |
|
| VT145 |
GPO |
CV243 |
|
|
| USA |
CV1861 |
5Z3 |
|
| VT146 |
GPO |
CV1625 |
|
|
| USA |
CV1823 |
1N5GT |
|
| VT147 |
GPO |
CV1697 |
|
|
| USA |
CV1802 |
1A7GT |
|
| VT148 |
GPO |
CV1698 |
|
|
| USA |
CV1811 |
1D8GT |
|
| VT149 |
|
|
3A8GT |
|
| VT150 |
GPO |
CV1699 |
|
|
| USA |
CV1966 |
6SA7 |
|
| VT150A |
GPO |
CV1700 |
|
|
| USA |
CV1967 |
6SA7GT |
|
| VT151 |
GPO |
CV1701 |
|
|
| USA |
CV578 |
6A8G |
|
| VT151B |
|
|
6A8GT |
|
| VT152 |
GPO |
CV1702 |
|
|
| USA |
CV1940 |
6K6GT |
|
| VT152A |
|
|
6K6G |
|
| VT153 |
GPO |
CV1703 |
|
|
| USA |
CV837 |
12C8 special |
|
| VT154 |
GPO |
CV1067 |
|
|
| USA |
CV629 |
814 |
|
| VT155 |
|
|
special |
|
| VT156 |
|
|
special |
|
| VT158 |
|
|
Zahl tube |
|
| VT158 |
|
|
special |
|
| VT159 |
|
|
special |
|
| VT160 |
|
|
special |
|
| VT161 |
GPO |
CV1710 |
|
|
| USA |
CV537 |
12SA7 |
|
| VT162 |
GPO |
CV1711 |
|
|
| USA |
CV697 |
12SJ7 |
|
| VT163 |
GPO |
CV1712 |
|
|
| USA |
CV1896 |
6C8G |
|
| VT164 |
GPO |
CV1713 |
|
|
| USA |
CV723 |
1619 |
|
| VT165 |
|
|
1624 |
|
| VT166 |
|
|
371A |
|
| VT167 |
GPO |
CV1716 |
|
|
| USA |
CV1945 |
6K8 |
|
| VT167A |
|
|
6K8G |
|
| VT168A |
|
|
6Y6G |
|
| VT169 |
GPO |
CV1717 |
|
|
| USA |
CV531 |
12C8 |
|
| VT170 |
GPO |
CV1718 |
|
|
| USA |
CV766 |
1E5-GP |
|
| VT171 |
GPO |
CV1719 |
|
|
| USA |
CV782 |
1R5 |
|
| VT171A |
|
|
1R5 (loktal) |
|
| VT172 |
|
|
1S5 |
|
| VT173 |
|
|
1T4 |
|
| VT174 |
|
|
3S4 |
|
| VT175 |
|
|
1613 |
|
| VT176 |
|
|
6AB7 / 1853 |
|
| VT177 |
GPO |
CV1720 |
|
|
| USA |
CV780 |
1LH4 |
|
| VT178 |
GPO |
CV1721 |
|
|
| USA |
CV778 |
1LC6 |
|
| VT179 |
GPO |
CV1722 |
|
|
| USA |
CV781 |
1LN5 |
|
| VT180 |
|
|
3LF4 |
|
| VT181 |
GPO |
CV1052 |
|
|
| USA |
CV1790 |
7Z4 |
|
| VT182 |
GPO |
CV1723 |
|
|
| USA |
CV811 |
3B7 / 1291 |
|
| VT183 |
GPO |
CV1724 |
|
|
| USA |
CV2709 |
1R4 / 1294 |
|
| VT184 |
|
|
VR90/30 |
|
| VT185 |
GPO |
CV245 |
|
|
| USA |
CV815 |
3D6 / 1299 |
|
| VT186 |
|
|
special |
|
| VT187 |
|
|
575A |
|
| VT188 |
GPO |
CV1727 |
|
|
| USA |
CV891 |
7E6 |
|
| VT189 |
GPO |
CV1128 |
|
|
| USA |
CV893 |
7F7 |
|
| VT190 |
GPO |
CV1728 |
|
|
| USA |
CV895 |
7H7 |
|
| VT191 |
GPO |
CV1628 |
|
|
| USA |
CV683 |
316A |
|
| VT192 |
|
|
7A4 |
|
| VT193 |
GPO |
CV1100 |
|
|
| USA |
CV1777 |
7C7 |
|
| VT194 |
GPO |
CV587 |
|
|
| USA |
CV897 |
7J7 |
|
| VT195 |
GPO |
CV1863 |
|
|
| USA |
CV2874 |
1005 |
|
| VT196 |
GPO |
CV509 |
|
|
| USA |
(CV574) |
6W5G |
|
| VT197A |
|
|
5Y5GT/G |
|
| VT198A |
|
|
6G6G |
|
| VT199 |
GPO |
CV124 |
|
|
| USA |
CV1993 |
6SS7 |
|
| VT200 |
GPO |
CV1065 |
|
|
| USA |
CV686 |
VR105/30 |
|
| VT201 |
GPO |
CV1056 |
|
|
| USA |
CV552 |
25L6 |
|
| VT201C |
|
|
25L6GT |
|
| VT202 |
GPO |
CV1054 |
|
|
| USA |
CV664 |
9002 |
|
| VT203 |
GPO |
CV9 |
|
|
| USA |
CV665 |
9003 |
|
| VT204 |
GPO |
CV18 |
|
|
| USA |
CV789 |
HK-24G |
|
| VT205 |
GPO |
CV1630 |
|
|
| USA |
CV1996 |
6ST7 |
|
| VT206A |
|
|
5V4G |
|
| VT207 |
GPO |
CV1091 |
|
|
| USA |
CV529 |
12AH7GT |
|
| VT208 |
|
|
7B8 |
|
| VT209 |
|
|
12SG7 |
|
| VT210 |
|
|
1S4 |
|
| VT211 |
|
CV1978 |
6SG7 |
|
| VT212 |
|
|
958 |
|
| VT213A |
|
|
6L5G |
|
| VT214 |
|
|
12H6 |
|
| VT215 |
|
|
6E5 |
|
| VT216 |
|
|
816 |
|
| VT217 |
|
|
811 |
|
| VT218 |
|
|
100TH |
|
| VT219 |
|
|
|
|
| VT220 |
|
|
250TH |
|
| VT221 |
|
|
3Q5GT |
|
| VT222 |
|
|
884 |
|
| VT223 |
|
|
1H5GT |
|
| VT224 |
|
CV18 |
RK-34 |
|
| VT225 |
|
|
307A |
|
| VT226 |
|
|
3EP1 / 1806P1 |
|
| VT227 |
|
|
7184 |
|
| VT228 |
|
|
8012 |
|
| VT229 |
|
|
6SL7GT |
|
| VT230 |
|
|
350A |
|
| VT231 |
|
|
6SN7GT |
|
| VT232 |
|
CV6 |
E1148 |
|
| VT233 |
|
|
6SR7 |
|
| VT234 |
|
|
HT-114B |
|
| VT235 |
|
|
HY-615 |
|
| VT236 |
|
|
836 |
|
| VT237 |
|
|
957 |
|
| VT238 |
|
|
956 |
|
| VT239 |
|
|
1LE3 |
|
| VT240 |
|
|
710A |
|
| VT241 |
|
|
7E5 / 1201 |
|
| VT243 |
|
|
7C4 / 1203A |
|
| VT244 |
|
|
5U4G |
|
| VT245 |
|
|
2050 |
|
| VT246 |
|
|
918 |
|
| VT247 |
|
|
6AG7 |
|
| VT248 |
|
|
1808P1 |
|
| VT249 |
|
|
1006 |
|
| VT250 |
|
|
EF50 |
|
| VT251 |
|
|
441 |
|
| VT252 |
|
|
923 |
|
| VT254 |
|
|
304TH |
|
| VT255 |
|
|
705A |
|
| VT256 |
|
|
ZP486 |
|
| VT257 |
|
|
K-7 |
|
| VT259 |
|
|
829 |
|
| VT260 |
|
|
VR75/30 |
|
| VT264 |
|
|
3Q4 |
|
| VT266 |
|
|
1616 |
|
| VT267 |
|
|
578 |
|
| VT268 |
|
|
12SC7 |
|
| VT269 |
|
|
717A |
|
| VT277 |
|
|
417 |
|
| VT279 |
|
|
GY-2 |
|
| VT280 |
|
|
C7063 |
|
| VT281 |
|
|
HY-145ZT |
|
| VT282 |
|
|
ZG489 |
|
| VT283 |
|
|
QF-206 |
|
| VT284 |
|
|
QF-197 |
|
| VT285 |
|
|
QF-200C |
|
| VT286 |
|
|
832A |
|
| VT287 |
|
|
815 |
|
| VT288 |
|
|
12SH7 |
|
| VT289 |
|
|
12SL7GT |
|
| VT501 |
UK |
CV1501 |
|
Beam tetrode |
|
