Aluminum Tube from Home Depot - tensile strength?

[rsterne]

How are you planning on anchoring the valve?.... If the aluminum tube is 1/32" wall, it would be 11/16" ID, and the axial load would be over 1100 lbs.... With the full 3/4" ID it increases to over 1300 lbs.... You should design for a load of 3.5 times that without failure.... The typical solution is three 10-32 low-profile, high-tensile SHCSs....

Bob

[PZAM]

Aluminum tube is 1/16" wall, so the largest diameter exposed to pressure would be 0.625", putting the load at around 920 lbs for 3,000 psi.

The typical solution is three 10-32 low-profile, high-tensile SHCSs

That's the plan, standard screw plus one on each side of the tube.

[rsterne]

Seems a bit strange to give up 30% of your usable volume by sleeving the 2240 tube down instead of just making a new one.... JMO....

Bob

[PZAM]

Seems a bit strange to give up 30% of your usable volume by sleeving the 2240 tube down instead of just making a new one...

You make a very valid point, a fresh tube is indeed starting to make more sense.