Bob DBF
Contributor
According to the Forum 1980 is considered Vintage. Sherwood was, and still is, a gas equipment manufacturer. When SCUBA first started in this country they provided parts to the fledgeling industry. In 1972 they began producing regulators and became Sherwood as we now perceive it.Wolfie is spot on. If it is under 40% just use it. Not sure why this is posted in a vintage forum as a 1987 Sherwood oasis is not vintage, it is not even broke in yet. Come to think of it, I am not aware that there is any vintage Sherwood equipment. Or maybe I am just not aware of any.
I have a couple of Sherwood's from the '70s and a couple since and they have been very very good to me. I wouldn't think twice about using any of them with Nitrox under 40%, especially since 32% is what I usually find.
Bob
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I may be old, but I'm not dead yet.