Exhaust check valve

[PAT V.]

AS OF TODAY, BETH & I ARE THE PROUD NEW OWNERS OF "INVICTUS" A
1981 E-28+. WE SPENT THE DAY ON BOARD CLEANING & MAKING MINOR
REPAIRS AFTER SHE SPENT THE LAST 1 1/2 YEARS ON THE HARD.
THERE IS A CHECK VALVE IN THE EXHAUST BETWEEN THE DIESEL ENGINE
AND THE MUFFLER. THE SURVEYOR SAID THIS IS WRONG. WAS THIS
ORIGINALLY INSTALLED BY ERICKSON?

 

[Emerald]

I had a check valve in my exhaust that was original from Ericson. I removed it. I would recommend you do the same.