Yea, if that's the case, replace the whole thing. They don't even make
replacement parts for those any more... they're old Groco seacocks. I
replaced three on my boat, and sold the old ones just like that for spare
parts!

A neat solution for new fabrications: I saw one where the guy did this for
easy cleaning from the inside. Attached to the seacock was a piece of bronze
pipe with a "T", and another piece of pipe with a cap. The seawater took a
right turn at the "T", and if he needed to clean the thru-hull, he just
removed the cap and ran a wire or whatever straight down through the seacock
and thru-hull from the inside. Not for the faint of heart or those with
crummy bilge pumps, but very efficient.

--


Keith
__
Shotgun wedding: A case of wife or death.
"Charlie J" wrote in message
...
Loyd-
If serious sea growth is not the answer, here is a more exotic explanation
for your problem:

Does your malfunctioning seacock have a thumb screw on the opposite side
from the handle? If so, then this type of seacock has a rubber coated
bronze cylinder rotating within the body. The cylinder has a transverse
hole in it. When you shut the seacock, the hole is aligned at 90 degrees
to
the thru hull and the system. You secure the seacock and seal the rubber
to
the seacock body by tightening the thumbscrew. When you open the seacock,
you first loosen the thumbscrew to release the seal between the rotating
cylinder and the seacock body and then turn the handle 90 degrees to align
the transverse hole with the thru hull and the system.

If you feel some resistance when you are operating the seacock, the bond
between the bronze cylinder and the rubber sheath has failed and you will
be
rotating the metal cylinder within its rubber sheath but you will not be
"operating" the valve from open to shut, shut to open. If you do not feel
any resistance, than the handle may have come detached from the bronze
cylinder.

Hope this helps and good luck.


Charlie Johnson
JTB Marine Service
200 Second Avenue South
#159
St. Petersburg, FL 33701
727.560.9065