For the people who punch their own NRV Pips from a sheet of Viton

Discussion in 'Fettling Forum' started by Rich_S, Aug 1, 2025.

  1. Rich_S

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    How are you shaving down the bottom part to fit inside the spring? My NRV doesn't have the brass pip holder. I guess I could use a razor blade and just take little chunks off at a time. Is there an easier way?
     
  2. threedots

    threedots New Zealand Subscriber

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  3. snwcmpr

    snwcmpr SotM Winner Subscriber

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    Brass pip holders are available somewhere, right?
     
  4. afoton

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    I cut off the spring-part and a very thin "whole diameter part" from the original pip, and let this part sit in the spring. Then I don't need the brass pip-holder.
     
  5. Rich_S

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    I was actually thinking about doing something similar when I posted this. Does the new pip just sit on top of the old or do you attach it somehow? Any concern with the new part accidentally flipping as the valve opens and closes while pumping?
     
  6. afoton

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    It just sit there. If it has the rigth diameter, there are no way it can flip over.
     
  7. snwcmpr

    snwcmpr SotM Winner Subscriber

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    My experience
    Alignment is critical
     
  8. TSPORT United States

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    Ditto what threedots said. The pip holders from The Fettlebox work great with the existing spring and a flat pip. At least in Svea 123/Optimus 80 and similar applications.