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Recent content by djk

  1. djk

    Ideas for damping fluid borne noise?

    Thank you Vibration Specialist. Unfortunately the tube length is about 12 feet and a larger tube diameter would be relatively costly. Since the initial posting numerous other solutions have been tried:<br> - internal valve changes to reduce the speed of opening.<br> - muffler upstream of...
  2. djk

    aluminum corrosion leading to leaky valve?

    I am working on refrigeration system valves. I am currently developing a new valve housing machined out of uncoated 7075-T651 material. This housing is a tube about 2 inches long and 3/8" diameter containing a valve seat with a 50 degree conical shape into which an 1/8" ball is seated. I am...
  3. djk

    Failure of Mechanical Seals

    You have your hands full. When you can answer the following questions you will be on your way. <br> <br> What form does the seal take? Ball? Poppet? O-Ring?<br> What are the seal materials?<br> What is the working fluid?<br> What are the working pressures?<br> How is a failure defined?
  4. djk

    Ideas for damping fluid borne noise?

    Looking at a refrigeration loop on a vehicle with a shut off valve. When the valve opens or closes, a clunk is heard by the passengers. Considering rubber damper for mounting, any ideas for in line fitting type suppression?

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