This Burmos 21 seems a little unusual in 2 respects, first the NRV is working effectively without any intervention, and secondly it has an aluminium pump rod end. I can't find this latter feature on any other Burmos stove currently in the gallery, though there are plenty of others with aluminium legs which this example also has. Could the pump rod end date the stove into the immediate post-war, late 1940s period, when aluminium was often substituted for other materials then in short supply? @kerophile
It is indeed steel! Same oddly large size as found on so many Burmos 21s but normally brass. Intended as another economy measure?
The steel spirit cups seem to go the distance, unlike the steel versions of the windshields. I've had one windshield dissolve in normal use in my ownership, and found the sad remain of another with a newly acquired stove. I think @Dean has had a similar experience.
