Quite a large valve !!

[beam me up schottky]

Bought 2 of these some years ago at the NVCF when it was at the NEC, it's a VU504, rectifier I think.
My intention was to use them as illuminated sculpture pieces using the heaters but I've yet to get around to it. It does look impressive though !
They are 18" long by 6" diameter.

[big band heaven]

Now that's impressive! What on earth did they use those babes in?

Richard.

[beam me up schottky]

Just checked and it is a half wave rectifier, rated at 60KV and 400ma !!! Thats 24KW !!! No idea of the application.

[OldTickTock]

Probable use was in X-Ray machines from the 1960's.

[Jamie-Skinner]

Saw some even bigger at Flixton Air Museum where I got my Mullard radio. They were HUGE! How on earth did you power the valve up?

[beam me up schottky]

Easy, big transformer powered by my variac so the heater voltage could be set appropriately. Heater current is 15.2 amps at 16.8 volts !! I ran it at 10 volts though as I want them to last when I finally implement my sculpture idea ! They produce a wonderful orange glow on 10 volts. Didn't bother with the HT though, had nothing on the bench that would produce 60KV !!

[Jamie-Skinner]

15.2Amps?!?

[Shaman]

Nice large Rectifier capable of handling loads of power, i have a smaller but large TX valve, not an 807 but larger, will dig it out and put it here sometime i also have a Russian copy of a wehrmacht, valve NOS, quite valuable i would think....regards.....Alan.