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Hi Larry,Hello Engineman,
I just examined the parts again, in good light, and with a magnifying glass. Their are numbers stamped into some of the light-gold-colored fittings. The fittings have numbers such as the letter K over the digits 238, with a circle around them. Another such number on a fitting is K over 415. I imagine that these are simply stock fitting numbers.
On the mounting plate portion of the piece that has what I called a diaphragm pump, their is a stamped B, with what looks like a crescent moon around it. I imagine that the stamp did not come down square, and the "crescent moon" is really about half of a circle, and there are missing numbers or letters under the B. There are no other markings.
I understand that none of the above information is very much help. I guess I will not learn where these parts were used. Thank you for your prompt reply, and for trying to help me.
Larry
OK Eng, thank you for the additional information. At least now I have some idea what we have, and what the parts do, even if it is uncertain what aircraft the parts were used on. I understand that some parts were used across many different aircraft. Since we had maybe 30 different enemy airplanes here right after WWII, and many were disassembled for study, and the parts were later buried, we don't know, and in many instances will never know, exactly which airplanes they came from.Hi Larry,
The "light gold" coloured fittings are yellow anodised alloy, very common on German fuel, oil, air and hydraulic (low-ish pressure) systems. The numbers that you describe are possibly QA stamps, and some could be size markings, but very difficult to tell without pics. Some of your material is hard to ID, even with a lot of knowledge, so do not be shy about asking because you might get good info back! Although both of your parts here have the same square section operating drives, I think that they are possibly not related. I believe that the left part is an air supply valve, commonly used to switch low pressure air to the external fuel droptank to transfer fuel into the main tank. This was fitted to Bf 109's with this system which includes Bf 109 F to K. That valve is fitted inside the LHS of the cowling, in a position just below the Hydraulic U/C selector valve. Similar valves were fitted to other types, and I cannot confirm the exact one that you have there.
The pump/filter/shut-off cock on the RHS is similar to other versions but, yours has two sediment bowls. Yes, it does have a manual diaphragm pump function to raise fuel pressure by hand operation of a lever. This is just one of a family of these but, the two bowl arrangement is specific and it is not for a Bf 109 E-K.
Cheers
Eng
Hi Tony, Thanks for posting the pic of the 8-4573A air valve. As you can see, your pic item looks to be fitted to a 109 F or later model with provision for a drop tank. It is positioned just below the U/C hydraulic selector valve at the rear left side of the engine compartment. Your pic is the correct way-up, and we can see the pipe connection on the forward face of the valve, and the straight-down connections on the bottom. In contrast, Larry's example, if rotated to the fitted position in a 109, has the connection on what is the rear face, and it has two banjo type fittings on the bottom connections. In addition, Larry's valve has a different style of the simple square drive shaft to that usually seen on a 109 fitted air valve.Maybe Engineman can help here. This is on a DB605 engine. Slightly similiar.
Tony
I have a few other images I'll post for you. A couple other fittings from the 605, and since we don't have a 601 on display yet, I took some of the Japanese 601. I'll post in a day or two.Hi Tony, Thanks for posting the pic of the 8-4573A air valve. As you can see, your pic item looks to be fitted to a 109 F or later model with provision for a drop tank. It is positioned just below the U/C hydraulic selector valve at the rear left side of the engine compartment. Your pic is the correct way-up, and we can see the pipe connection on the forward face of the valve, and the straight-down connections on the bottom. In contrast, Larry's example, if rotated to the fitted position in a 109, has the connection on what is the rear face, and it has two banjo type fittings on the bottom connections. In addition, Larry's valve has a different style of the simple square drive shaft to that usually seen on a 109 fitted air valve.
So, although I do think that Larry's valve is likely an 8-4573 air valve of the type fitted to the Bf 109, it is not dressed as I would expect for that application, and the exact id remains unknown. Of course, it is probably an 8-4573 and I suspect it may be from another German aircraft with air pressure operated drop tank(s).
Cheers
Eng
Hi,Here are two other devices. One from the DB605 on a Bf109G, on the firewall near the previous one I posted above. And another image of a device on a Aichi Atsuta V-12 (copied from a DB601).