FollowupID: 446324 Submitted:
Monday, Aug 14, 2006 at 21:07
It all comes down to weather its a pressure vessel or not.
If it can hold pressure you need a pressure relief because there is no way a paint drum will hold steam. Without going into too much detail the flash point of steam is an incredible amount of energy and if you try to contain it in something like that people will get seriously burnt when it goes up.
You can certainly use a paint drum but you have to let the steam escape.
Letting the steam escape will dramatically reduce the efficiency of the water heater.
You really need to look at what you want to make, what skills you have and materials available to you.
Their is a serious amount of difference between hot water and a steam pressure vessel!
Sorry to make such a long winded exercise out of this but a little wrong advice in what everyone is talking of could really result in in a big accident.