Blakes sea cocks

Easy job once you know how.

If seized, crack off the bolts holding the cone in position in the seacock body then from underneath the boat use a piece of wood and mallet to tap (or whack if necessary) the cone up into the boat - go gentle to start with and you must use a wood against the inside of the seacock - a short length of broom handle works on the larger seacocks.

Once free you will probably need to use some valve grinding paste (from a motor factor or Halfords) to ensure a good fit. Obviously, make sure the paste is all cleaned up before reassembly.

You can use regular marine grease (as used in stern glands) but I now use the "proper" Blakes seacock grease as it's consistency is better suited to the task. The Blakes stuff can be a bit expensive but a tub will probably last 20 years!

Hope this helps.

I go along with George. However I did have one instance where I had to take the whole seacock assembly out by undoing nuts that go onto s/s set screws bonded into the hull laminate - it took a gas torch & put log (short scaffold pole) to free the cone. I suggest an e-mail to Blake's as there must be a Stockist in Canada.