Thread Tools Search this Thread Display Modes
Old 04-11-2021, 10:04 AM   #21
City: Harriman, TN
Vessel Name: Anchors Away
Vessel Model: Mainship 390
Join Date: Sep 2020
Posts: 11
Agree with skipper724 - seacock in the well beside the sinks/shower gray water pump supplies water to the toilet. In my case, a Jabsco electric. In the 1st pic, that red handled ball valve must be a common supply to the toilet from either the original seacock or the engine room seacock, as you described. In the 2nd pic, the ball valve behind the toilet bowl allows water to the toilet bowl for flushing, and is the same as mine. The last pic looks like the muffler drain? Don't have that on our boat, so no clue. BTW, when moving our boat from Pensacola, after pumpout, to Gulf Shores on the first day of the 16 day passage up to our east Tennessee homeport, we discovered the holding tank was full to the vent. We had left the supply seacock open during this move and guessed the toilet internals were leaking by from the hydraulic pressure of the boat moving through the water, filling the holding tank. We pumped out the holding tank and kept the seacock shut the rest of the trip, unless we were using the head. Problem didn't recur. The red handled ball valve in 1st pic may have been installed for the same reason. With it shut, either or both supply seacocks could left open, and water wouldn't fill the holding tank while underway. Just a guess. I've got more troubleshooting to do on our head to solve that problem.
Bullnuke675 is offline   Reply With Quote
Old 04-27-2021, 06:51 PM   #22
Senior Member
City: Long Beach Ca
Vessel Name: Freebird
Vessel Model: 1997 Mainship 350
Join Date: Jun 2010
Posts: 381
My 1997 350 came with that Thru hull/ball valve configuration from the factory. Every water supply is Thru hull/ball valve just different size to supply needs.
jclays is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program

All times are GMT -5. The time now is 02:04 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012