Old Devilbiss air compressor

I have a at least 25 year old oil lubricated air compressor made by Devilbiss and I need the intake and exhaust valve assemblies. I have called Devilbiss, Delta-Porter Cable, Dewalt, Devair, and M&S Service all saying that I am giving them invalid model and serial numbers and that they cannot help me. The following numbers are on the following parts:

Pump:
Model: 130
Serial: C40120

Motor / Pump mounting plate:
Type: UDM5004-3
No: 60795

Air tank:
Model: 5Z359
Serial: 111694L-968984

It is a 30 gallon horizontal oil lubricated compressor

All I want to know is if parts are still being made for this compressor, if not, where I can possible purchase some NOS parts. If parts no longer exist for this compressor I can't stop driving myself crazy trying to locate parts and focus on a solution to replace the compressor. Thank you in advance for anyone that replies.

 

25 years is a long time in US manufacturing. Companies change hands and tons of records go to the dump between each change. I was wondering, is the valve assembly a reed flat metal type? It may be something that you could have made along with a gasket set.