In a message dated 3/9/2010 1:37:38 P.M. Pacific Standard Time,
Alec.Smyth@compuware.com writes:
When you open those
valves at depth, the pressure differential would be about 500 psi if this
is say a 250 foot boat. Would you subject a rubber hose in a compression
fitting to that sort of pressure?
I just wanted to make sure my limited math skills aren't way off.
To determine pressure at depth you take the depth ( 250 ft. ), divide
by 33 to get atmospheres, then multiply by 14.7 to get pressure ( 112 psi.
).
Is this right ?
So if your max depth, not operating depth, is 500 feet, the max pressure is
223 psi.
Now let's get crazy......the pressure pushing down on a 24 inch
diameter hatch at 500 feet is.......
radius squared ( 12 X 12 ) times pi for the square inches ( 452 ), times
the psi ( 223 )............
100,831 pounds. Yikes !
Frank D.