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35499Re: [MILL_DRILL] Acetal pressure rating

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  • November X-Ray
    Feb 26, 2014
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      You could always build one and perform a hydrostatic test on it of 150% or so. Of course having a set of calibrated dead weights makes this an easier chore, then you would be able to know by the pound what pressure you are really testing to.

      But from the sound of everything, you probably have a large safety factor already in your planned design!




      On Wednesday, February 26, 2014 12:46 PM, Bill <bill_1955@...> wrote:
       
      That would be with NO safety factor.
       
      The various places I worked, we generally used a Safety Factor of 4, when calculating hydraulic tubing.
       
      So….more like 1188 PSI. Still plenty of overkill….but knowing always give a guy a warm fuzzy feeling……
       
      J
       
       
      From: MILL_DRILL@yahoogroups.com [mailto:MILL_DRILL@yahoogroups.com] On Behalf Of Jerry Durand
      Sent: Wednesday, February 26, 2014 10:40 AM
      To: MILL_DRILL@yahoogroups.com
      Subject: Re: [MILL_DRILL] Acetal pressure rating
       
       
      Hmmm, 1/2" OD, 0.125" wall, breaking pressure of 4750psi.  Seems a "little" high.  I think I'll be ok with any wall at 50psi!
      On 02/26/2014 10:24 AM, Bill wrote:
       
      Leave any cell blank, and it’ll calc it for you.
       
      For some safety factor, multiply the OD by the safety factor, and enter that number as the OD, rather than the actual OD.  
       
      Bill
       


      -- 
      Jerry Durand, Durand Interstellar, Inc.  www.interstellar.com
      tel: +1 408 356-3886, USA toll free: 1 866 356-3886
      Skype:  jerrydurand 

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