Stewart-Warner electric pumps.

I have moved (about three times) three Stewart-Warner used electric pumps. One was the auxiliary pump on my ’36 until just a couple of years ago. I have been told that the aircraft quality diaphragms on these pumps will handle ethanol gas. If this is the case, I will sell them to someone who wants one, if not, I will throw them away with great pleasure. Meanwhile, it worked fine on the ’36 until I removed it a couple of years ago. These pumps are the large rectangular yellow and green (one is solid green) pumps.