what is a seacock?

[Wyomingman]

OK this may be a dumb question but I am an experienced boater who has always owned outboards but I recently purchased a boat with a 2002 4.3MPI Mercruiser. In the manuel it says open the seacock prior to starting but I can not find where it explains what a seacock is or where it is located.

Thanks for the help!

 

[Don S]

Re: what is a seacock?

It's a shutoff valve (sometimes a simple ball valve with a handle) for shutting off a thru-hull fitting. The valve is normally located on top of the thru-hull fitting so it can be shut off incase the hose breaks or maintenance on the system is being done. It prevents water from going any further than the valve.

 

[mthieme]

Re: what is a seacock?

Basically it's a valve in the bottom of the hull to let water in or out.

 

[Bt Doctur]

Re: what is a seacock?

I`ll try to keep it clean.
A brass/bronze thru hull fitting equipped with a shut off valve. Commonly used on inboard and some I/O water inlet fittings, salt water washdowns, live wells,etc. Most I/O`s don`t have one. Some I/O`s use a engine mounted pump and heat exchanger and need the additional flow from the pump for cooling .On the smaller engines the water comes from the outdrive pump.

 

[idrownworms]

Re: what is a seacock?

rooster fish?

since your questions been answered I felt compelled to throw that in

 

[HT32BSX115]

Re: what is a seacock?

Geeze .....I thought it was an "Offshore Fighting Chicken"