Reply To: Dufour 385 GL Holding Tank Seacock

Bob Garrett

    Surely the hole for the through-hull SHOULD ONLY just be large enough!
    When I replaced mine it was awkward to tighten the nut because it is big, there is little room, and the hull is curved. I used sealant adhesive on the basis that if I ever wanted to remove it again it would be to replace it. And hopefully being Trudesign it should never need replacing. I added some thickness to the hull too.
    As already said, if the sealant has set then tightening will probably make for a leak.