'63 Safari blackwater dump adapter

[vknight]

A complete novice speaking. My ’63 Safari has a blackwater dump outlet, brass I believe, of the type shown in the photo, with four flanges (The photo is borrowed from an earlier post by GT1963, thanks, but mine’s the same). My question is, what fits that flanged outlet pipe? I don’t have anything that fits it, and my local RV parts man is stumped. I want to hook it to a Thetford SmartTote external tank on wheels. So far I’ve tried a Valterra Universal Adapter but sorry, no fit (so much for Universal!). Somebody out there must know.

[safari62]

Check this out:
Waste Valve Adapter for Early 1960s Airstreams

[samb]

These are the fittings that fit your brass valve.

I made my own adapter plate similar to the one VTS sells because it is not easy to keep the brass valve functioning properly and use of the adapter plate makes a wide range of connections readily available.
Sam

[vknight]

Many thanks, fellas.

[vknight]

Hmmmm. I don't suppose fittings like that come up for sale very often.