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  1. Thread: Ball Valves

    by MCA
    Replies
    11
    Views
    1,513

    Similar to my filter pit. The floor is 2' below...

    Similar to my filter pit. The floor is 2' below grade while the pond is 2' above grade. The 4" BD pipes enter via pit wall and go into the 4" knife valve. After the valve is a sweep 90 and a...
  2. Thread: Ball Valves

    by MCA
    Replies
    11
    Views
    1,513

    Cetus is around 1 meter high. So the top of a...

    Cetus is around 1 meter high. So the top of a vertically mounted valve could a 1 meter below water level. Then a short piece of pipe connects the valve to the Cetus using a Fernco fitting.
  3. Thread: Ball Valves

    by MCA
    Replies
    11
    Views
    1,513

    Then put the valves around 3' below pond...

    Then put the valves around 3' below pond surface...just below the sieve intake. The valves have much less pressure on them compared to the valves down at the depth of the pond floor. You can use the...
  4. Thread: Ball Valves

    by MCA
    Replies
    11
    Views
    1,513

    What will be the first stage of filtration? If...

    What will be the first stage of filtration? If it is a sieve, no need to close the BD main valve. If it is a vortex or static bed, you would indeed need to close the BD line to dump the chamber.
  5. Thread: Ball Valves

    by MCA
    Replies
    11
    Views
    1,513

    I have 4" Valtera knife on my BD lines. But...

    I have 4" Valtera knife on my BD lines. But those valves are around 3' from the surface originally feeding Nexus, now feeding Cetus. Basically those valves are never closed. No way I would use...
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