|Posted by John Scates, PE on May 28, 2003 at 23:37:12:|
|In response to Re: Converting an old water heater tank to air pressure.|
DON'T DO IT! First, the water heater tank is 20 years old. You don't know what condition it is in on the inside. It may be (probably is) partially rusted through and therefore weakened.
Secondly, water heater tanks are not intended for this application. As hj points out, air tanks should be tested to ASME specs. Just because it might hold 110 psi now does not mean it is safe. It could be in a condition that barely holds 110 and on the verge of failure.
If the tank blows, it could cause serious injury and property damage. The volume of air that it would contain would explode like a bomb. Unlike pressurized water which looses its pressure immediately upon a small release, air will continue to expand and can throw fragments across the room and through walls.
DON'T DO IT!
- John Scates
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