Hello, I have a 1983 300d with a broken check valve on the main vac line running from the vac pump to the booster.

Unfortunately, the replacement part #1234307429 doesn't seem to be available anywhere anymore. I ordered it from Pelican Parts but the order was cancelled because their supplier no longer makes it.

My understanding is that the check valve can't be purchased on its own. I have already used epoxy to repair the broken nipple on the valve once, but it didn't last and the nature of the break makes a permanent repair very difficult.

Has anyone had any luck fabricating a replacement? It seems like it would be possible to pull the check valve out, replace with a generic check valve and then add a tee in the line to feed the rest of the vacuum system. Does anyone here have thoughts? Thank you.