Originally Posted by HellSickle
Be careful out there.
I picked up a new acetelyne tank yesterday. After hooking up, I checked for leaks at all the fittings. All was well, except..... After I shut of the tank valve, I watched the gage pressure slowly drop. Looks like a regulator diaphragm went out. This would have resulted in a slow leak any time the main valve was open. A three car garage full of acetelyne would make a helluva explosion.
Regulators don't typically fail the way you describe. I expect the hose has a leak at a fitting or the torch leaks but the regulator back has a vent that can be tested. Some soapy water makes a good leak detector solution. If you aren't familiar or have not recently read-up on acetylene-oxygen safety, here is a good link: http://www.esabna.com/euweb/oxy_handbook/589oxy1_1.htm