Originally Posted by V Pline
OK...we are new to Airstreams and Vintage Airstreams to boot! But we have a 1961
Overlander and after finding the tub still intact under a sleeping platform, we discovered water still in the tub drain. We now wondered what other treasures we might find...
We found what appears to be a release for the dump but do not how know to get it to dump (very difficult to put in words - so my husband has me posting....). Here is the picture of what we think we need to use...
We don't know if we have the right location....HELP!
Welcome to the forums!
Sewage holding tanks were a new thing around 1960
; prior to that time trailers didn't have them. Toilets and drains were "dump to daylight"--everything just went out the sewer fitting. You either camped at a full-hookup trailer park with a sewer connection or you dug a "gopher hole" for sewage to drain into.
When they started putting holding tanks in Airstreams they started with a blackwater tank for the toilet only. This was equipped with a dump valve. Graywater from sinks and shower came into the sewer line through a tee fitting below the dump valve. So you could leave the dump valve closed and let the graywater drain on the ground, which was the usual practice in those days.
If you have the same dump valve setup that we had in the 1960
Pacer, you will find it does not conform to modern standards. The valve was a brass wedge-gate valve modified to work by pushing and pulling the T-handle rather than turning a threaded valve stem. The sewage outlet (also brass) was smaller than the current standard, about 2 1/2" diameter as I recall.
You will have some work to do to make it usable. In the case of our Pacer, I found that the outside diameter of the sewage outlet was about right to slip into the inside diameter of a male Thetford fitting (used on newer Airstreams) so I mounted the Thetford fitting on the outlet with screws and pipe sealant. That allowed us to use a standard dump hose.
The old brass wedge-gate dump valve had been damaged by freezing by the time we got the trailer but I was able to fix it and it worked fine for the rest of the time we had the trailer.
If you think you have the same kind of dump valve we had in the '60 Pacer, let me know and I will post some pictures and details on fixing it. (But I have never seen another one like it. )