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Recent content by adtchad

  1. adtchad

    standard for number of turns of teflon tape

    Are there standards for a minimum or/and maximum turns of teflon tape on a give NPT thread. In my company we use 1.5 to 2 turns, but not sure. TIA, Alfonso Del Toro
  2. adtchad

    Source for a flow meter

    I am looking for a flow meter to measure up to 400 SCFH at 30 psi. Any suggestions of a source. Thanks, Alfonso Del Toro Chad Therapuetics, inc.
  3. adtchad

    plated vs. unplated thread wear

    metengr: Thanks a lot for your inputs. Unfortunately, we cannot use teflon tape since this nut handles are designed for multiple engagements. I will contact our supplier about electroless plating and see if that is a viable route. Again, thanks a lot for your help.
  4. adtchad

    plated vs. unplated thread wear

    The nut is use in a compressed oxygen gas application and is a CGA-540. Its mating part is a CGA-540 Nickel plated brass male thread.
  5. adtchad

    plated vs. unplated thread wear

    Hello all, We have a number of brass (half hard)nuts that have been nickel plated that do not meet specs. We can re-tap them to meet those dimensions, but during that process the nickel platting will be removed. Does anybody have any data, or a reference, as to what the wear rate would be for...
  6. adtchad

    soldering a wire to a nickel plated terminal

    Hello, We are having solder flow problems on a nickel plated battery terminal. Using flux is not helping until the terminal is heated a lot. This takes a lot of time, with not very nice solder results. Any ideas on how to pre-clean will be appreciated. Thanks, Alfonso Del Toro CHAD Therapeutics.
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