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Double Clack

Home › Forums › Beginners questions › Double Clack

Viewing 8 posts - 1 through 8 (of 8 total)
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  • 15 March 2015 at 15:52 #183326
    Dennis Rayner
    Participant
      @dennisrayner52782

      I am just completing a Southworth steam water pump and I need it to share the clack bush on my boiler with the axle-driven water pump. I can't imagine them ever operating at the same time. Can anyone point me in the direction of drawings for a double clack valve? For what it's worth, the pipe size is 3/16".

      Many thanks

      15 March 2015 at 15:52 #7523
      Dennis Rayner
      Participant
        @dennisrayner52782
        6 April 2015 at 17:43 #185722
        Dennis Rayner
        Participant
          @dennisrayner52782

          "And some seed fell on stony ground" Ah well, I'm thinking of trying a different approach. I plan to tap into the existing axle pump feed via a T connector to the clack and put an inline check valve in each of the feeds before they T together.

          This will be under the footplate so it will keep the backhead looking more authentic – I wondered if anybody could see a problem with this approach?

          Should I remove the ball from the existing clack valve?

          Many thanks

          6 April 2015 at 18:52 #185727
          david homer
          Participant
            @davidhomer12226

            You should be able to a picture of one here

            http://modeleng.proboards.com/search/results?what_exact_phrase=double+clack&who_only_made_by=0&display_as=0

            You might also find some info if you look through John's web site

            David

            6 April 2015 at 20:01 #185731
            MichaelR
            Participant
              @michaelr

              There was a thread on this forum about a double clack with a drawing

               

               

              Edited By Stick on 06/04/2015 20:06:55

              6 April 2015 at 20:17 #185732
              Michael Gilligan
              Participant
                @michaelgilligan61133
                Posted by Stick on 06/04/2015 20:01:58:

                There was a thread on this forum about a double clack with a drawing

                .

                I wouldn't know one if it bit me on the leg … but

                I presume that this is the thread.

                MichaelG.

                6 April 2015 at 20:29 #185736
                MichaelR
                Participant
                  @michaelr

                  Well done MichaelG, I searched the threads but couldn't find what I was looking for.

                  Stick.

                  7 April 2015 at 11:45 #185755
                  doubletop
                  Participant
                    @doubletop
                    Posted by Dennis Rayner on 15/03/2015 15:52:38:

                    I am just completing a Southworth steam water pump and I need it to share the clack bush on my boiler with the axle-driven water pump. I can't imagine them ever operating at the same time.

                    I had exactly the same problem and did try a 'T' in the line for the hand-pump on the assumption that the pump exerting the highest pressure would close the output valve of its opposite number and open the boiler clack. My laziness resulted miserable failure fixed by doing just as you are proposing no pictures or drawings though..Now you got me thinking what I did, I think I just copied a single clack and put two of them onto a T piece. I'll have to go and check.

                    Pete

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