homerdoc
Contributor
I bought a used sherwood first and second stage at the dive shop. I needed to replace an ancient scuba pro on my Hooka rig. I was surprised when I found a rubber plug over a hole. The hole doesn't have any threads either. Any idea what it is? Okay to use as is? It breaths okay, and I suppose no issue since it is a hooka rig and will stay topside, but I have never seen a hole on a 1st stage that only has a rubber plug vs a threaded screw
Thanks.