Check valves

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Check valves

Home Forums Model Engineer. Check valves

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  • #202357
    whistler
    Participant
      @whistler

      What is the secret to getting stainless balls to seal in small check valves, if there is one? Are stainless balls as round as bearing quality balls? Even new purchased clacks don't seal completely.

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      #37682
      whistler
      Participant
        @whistler
        #202358
        Paul Lousick
        Participant
          @paullousick59116

          Give the ball a tap with a hammer to seat it into valve body. If the valve still leaks, discard the ball as it may now be damaged by the hammer blow and replace it with a new ball.

          Paul.

          Edited By Paul Lousick on 28/08/2015 23:23:49

          #202360
          duncan webster 1
          Participant
            @duncanwebster1

            The seat needs to be perfectly round, drilled hole no good. Reamed or better still D bit. Having said that I use O ring seated valves, which do not leak. Anyone want the drawing send me a pm, no idea how to attach it to this site.

            #202371
            michael howarth 1
            Participant
              @michaelhowarth1

              Viton balls work very well in small check valves. Use a ball one size greater than the stainless.

              Mick

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