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1983 Aft Cabin Port Seacock Question

Posted: June 26th, 2025, 8:56 am
by CaptDad
Hi there,

Im currently repairing the intake line for my portside seacock hose. (It cracked during the winter while it was out of the water getting worked on.)

Does anyone know, once I make this repair if the toilets are connected as well as the AC units? I can’t seem to get water to flow into my toilets, however the pumps work without it. I’m hoping once I get this hose intact that everything will run accordingly.

Re: 1983 Aft Cabin Port Seacock Question

Posted: June 26th, 2025, 9:54 am
by buster53
AC system will have its own dedicated seacock, separate from the head.

Re: 1983 Aft Cabin Port Seacock Question

Posted: June 26th, 2025, 10:58 am
by km1125
Curious if your boat still has the gate valves for seacocks. My '83 did and I changed them out. They can trap water inside which can freeze and crack the housing, if they are closed before the boat is hauled and not cycled once out of the water.

But which "portside seacock hose" are you referring to? My '83 had a dedicated seacock for the heads, and it was located just in front of the port engine, next to the port engine seacock.

I had split the line for the heads and used it to serve the aft AC unit that I added, because I did it in the middle of the boating season and didn't want to haul the boat to install another seacock. But I believe most vessels would have a separate seacock for their HVAC units (as noted above). I would locate your HVAC water pump and follow the input line to it to see where it's sourced.

Re: 1983 Aft Cabin Port Seacock Question

Posted: June 26th, 2025, 11:54 am
by buster53
km1125 wrote:Source of the post But I believe most vessels would have a separate seacock for their HVAC units (as noted above). I would locate your HVAC water pump and follow the input line to it to see where it's sourced.


Good idea to locate the AC pump and FYI for the OP, chances are really high the pump and the seacock will be within 1-2’ of each other