Really nice kitchen stoves you have! never seen that spirit cup attachment before. has to be at least from the thirty's and not dented up. thanks for your photo's!
Neet water drain on that tank lad. This is the first i've seen like that. Now i shall have to seek one out. lance
I have the hat with D on at the ready and a handy corner, but it should be the NRV. I've used the hat a couple of times.
@snwcmpr I may be wrong, and notice that other comments above say "water drain", but I was basing my comment on: The quote is from here: Another Svea simplex Also, note: Optimus No. 5 (pre 1919) Cheers Tony
Ok. I just cannot follow process. The link states Alex changed the pip. Why would a pip be located on the bottom of the tank?
This NRV is configured in the same way as on the tiny Svea No.40 as explained in the above quote extract. The little slotted cap is a male threaded access cap. It is well illustrated in @presscall's Svea 40 post here: Svea 40 @snwcmpr @Alex H
A bit more explanation of the working of an ‘external’ Svea NRV might be helpful. My Svea No.40 with one. The NRV components, in part. Those fit into here, the sprung-loaded ‘pip’ seal mating against the annular rim of a brass tube that exits in the base of the pump, the tube feeding pressurised air on the ‘push’ stroke of the pump to the NRV. The rectangular hole arrowed exits to the tank and pressurised air passes through it into the tank when the pressurised air from the pump lifts the ‘pip’ seal off its seat. Pressurised air or fuel cannot escape from the NRV because its screw cap carries a lead washer which seals it to the tank. Crudely drawn, but the internal arrangement and NRV. The pump/NRV action is excellent and access to service the NRV is better than that for an NRV located at the end of a pump tube. John
