Re: [PSUBS-MAILIST] Mini book review.

[Dan h <machine@epix.net>]

Testing with water is much more efficient.  You first fill the chamber
totally with water and than add a bit more water with a high pressure pump.
With air you have to compress and compress and compress always pumping in
under some pressure.  The volume of air you would need to charge the chamber
would be great compared to the few gallons of water to load to the same
pressure.

Dan H.

MarkR1970@aol.com wrote:

> In a message dated 4/10/2002 8:19:16 PM Central Daylight Time,
> coalbunny@onewest.net writes:
>
> << I would presume that a pressure chamber could be made by using
>  compressed air to add weight to the water.  Am I wrong on that? >>
>
> Why would you even have to use water. Pounds per square inch is the same
> whether it's air or water. Why not just use compressed air if testing for
> crush pressure.
>
> Mark