I'm pretty careful about blowing out the whole system, so as I'm getting the '73 Safari ready for Burning Man, I never expected this issue. Photo is of the bowl from a strainer that is in the fresh tank line. So it's between the tank and the pump and therefore never gets blown out. The strainer is installed with the bowl at a downward angle, so it retains water when the tank is drained.
As you can see, the bowl is severed from the threaded top.
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