Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-07-2015, 11:21   #1
Registered User
 
sher9016's Avatar

Join Date: Sep 2010
Location: Currently cruiseing the Caribbean
Boat: Morgan 461
Posts: 42
Re-plumbing head

Currently reworking my ‘new’ 1981 Morgan 461, getting ready for shakedown and then sail across to Med in May/June 2016. One of the previous owners evidently started re-plumbing the forward head, but did not complete. I want the ability to pump to holding tank or directly overboard and to empty holding tank at sea. Both head and tank are below waterline. There is a vented loop between the head and tank and on the tank discharge side the hose leads to a fixed ‘TEE’ which runs both to a thru-hull with seacock and to the deck pump out fitting. A macerater pump is screwed down but not plumbed next to the underwater seacock.



Don't think plumbing the pump to the hose leading to the thru hull is workable as the pump is underwater and would need a vented loop?



I plan to install a selectable ‘Y’ valve after the existing vented loop on the discharge line from head and run from that to either tank or overboard utilizing thru hull that is currently plumbed to exhaust from tank (but seems to serve no purpose, as plumbed). Then I plan to relocate the macerator pump about 3 feet above the waterline and ‘TEE’ or ‘Y’ into the deck pump out hose and run that to a separate thru hull so I can use pump to empty tank. Since pump is well above water line, do I need vented loop? Do I need selectable ‘Y’ valve or will ‘TEE’ work?



Plumbing is not my strong suit. Does this sound right/safe?


Thanks for any help/suggestions.


Jim and Sherrin now aboard Persistent Lady II Sent from my iPad using Cruisers Sailing Forum
__________________
Jim & Sherrin, Cruising western Caribbean on Persistent Lady II, planning on Europe again in 2021.
sher9016 is offline   Reply With Quote
Old 19-07-2015, 12:15   #2
cruiser

Join Date: Jan 2012
Location: Pangaea
Posts: 10,856
Re: Re-plumbing head

Don't concern yourself too much plumbing for pump out stations, you'll never find one here in the Med. Try if you can to avoid needing the macerator pump for discharging the holding tank waste overboard, you'd be better off plumbing a gravity discharge system and using a macerating electric head. Much less to go wrong.

Our stern head has a small above the waterline holding tank which leads to a through hull with a seacock. So the macerating head pumps the waste up and over an anti siphon and into the holding tank. We keep the through hull open at all times, so basically the waste just drops on through the tank. No mechanical pump out is necessary... no waste tank macerator pump involved. KISS.

The same setup for the forward head... minus the holding tank.
Kenomac is offline   Reply With Quote
Old 19-07-2015, 12:24   #3
running down a dream
 
gonesail's Avatar

Join Date: Mar 2006
Location: Florida
Boat: cape dory 30 MKII
Posts: 3,112
Images: 7
Send a message via Yahoo to gonesail
Re: Re-plumbing head

usually an evacuator pump will not allow a backflow. placing it above waterline is good but may give you priming problems. if you have it running to its own thru hull even better .. you should only have that sea cock open when you are doing a pump out. i would have a selectable Y valve to control which pump out method i am using. my holding tank had 2 outlets for discharge hoses. it is a bit complicated but that is usually the case with boat plumbing. and if the 12v pump fails you have another mess
__________________
some of the best times of my life were spent on a boat. it just took a long time to realize it.
gonesail is offline   Reply With Quote
Old 19-07-2015, 12:35   #4
Registered User
 
sher9016's Avatar

Join Date: Sep 2010
Location: Currently cruiseing the Caribbean
Boat: Morgan 461
Posts: 42
Re: Re-plumbing head

Kenomac
You are right about the Med. We found exactly 1 station between Gibraltar and Italy. However we will cruise the U.S. East for about a year first and since the tank cannot be relocated above the waterline, don't think gravity will work.. As it happens I just bought the new macerating head, so will go directly overboard with it in Med but still need tank for US, and if I have a tank, I will have the ability to empty it offshore.


Jim and Sherrin now aboard Persistent Lady II Sent from my iPad using Cruisers Sailing Forum
__________________
Jim & Sherrin, Cruising western Caribbean on Persistent Lady II, planning on Europe again in 2021.
sher9016 is offline   Reply With Quote
Old 19-07-2015, 12:44   #5
Registered User
 
sher9016's Avatar

Join Date: Sep 2010
Location: Currently cruiseing the Caribbean
Boat: Morgan 461
Posts: 42
Re: Re-plumbing head

Gone sail
Good point about priming, will need to check the specs. Just trying to avoid sinking the ship!
__________________
Jim & Sherrin, Cruising western Caribbean on Persistent Lady II, planning on Europe again in 2021.
sher9016 is offline   Reply With Quote
Reply

Tags
head, plumbing

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
C-Head, Natures Head or Air Head- which is best overall Ram Plumbing Systems and Fixtures 49 26-11-2018 14:01
Vented Loops in Head Plumbing? Wotname Plumbing Systems and Fixtures 41 14-12-2009 03:55
Head Plumbing Diagram - Help? SkiprJohn Plumbing Systems and Fixtures 20 07-01-2009 04:58
Head plumbing diagram needed akpiperandjane1 Plumbing Systems and Fixtures 1 28-07-2008 10:38

Advertise Here


All times are GMT -7. The time now is 07:14.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.