***Warning***
ok, trying to make sure someone doesn't kill themselves here. Oxygen under pressure in the presence of hydrocarbons WILL EXPLODE. That is a simple fact of chemistry. I appreciate dlnmerced's opinion and advice, but do NOT use SCUBA regulators or equipment with 100% O2 unless they are O2 certified by the manufacturer AND O2 clean by a SCUBA shop. There are reasons some doctors are reluctant to prescribe Oxygen. Oxygen and hydrocarbons under pressure will explode.
It's great dlnmerced has been lucky to date, but having a regulator explode in your face is not something anyone wants. If you follow his advice, make sure your regulator and hoses are properly certified for 100% O2. Any questions, feel free to speak to your Oxygen supplier or SCUBA shop will voice the same warning.
J