sea cocks

  1. S

    SDX 290

    Hello all. I just purchased a used 2017 290 SDX and I cannot find the sea cock for the black water tank. The manual doesn’t show the location and the PO never used it. Thanks in advance.
  2. G

    Sea Ray 440 Express Vacuflush question

    I have just purchased a 440 Express that has vacuflush heads. I boat in Canadian waters so do not have to keep seacock closed. I am hearing conflicting advise about whether the system will work with the seacocks open. Some have told me that if they are open, the salt water will suck in when the...
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