Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 21-10-2014, 15:25   #16
Registered User
Terra Nova's Avatar

Join Date: Apr 2007
Location: Marina del Rey, California
Boat: Freya 39 cutter- Terra Nova
Posts: 3,826
Re: Toilet 'burps' after flushing solid waste-help Head Mistress!

An anecdote.

A client had difficulty with a nearly new waste system. It turned out that she was getting rid of her dog's poop by dumping it down the head. A dog's digestive system is much different than our own. And the almonds she had occasionally been feeding him passed virtually intact, jamming up the joker valve.

1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design
Terra Nova is offline   Reply With Quote
Old 21-10-2014, 16:18   #17
Registered User

Join Date: May 2014
Location: Seattle
Boat: Challenger 32
Posts: 15
Re: Toilet 'burps' after flushing solid waste-help Head Mistress!

This is the setup - sorry if it sounds simplistic - I am learning. The raw water intake goes to the pump, another hose comes out of the pump and goes up to a plastic loop with a vent on top, then back down to the toilet bowl. The waste discharge goes through the pump/joker valve through a much larger hose to a Y valve, then to the holding tank which is relatively close by 3.5-4ft. Off the tank is a hose to a macerator and a thru hull that's never used and a clear vent hose that leads to the transom. There are no other loops. The vent hose does have a dip as it goes under the sole, then rises gradually when it gets to the lazarette to the vent. It's currently a bare hose end sticking out of a large lazarette vent b/c I haven't been able to fix the corroded connection to the old vent yet and didn't want the lazarette smelling like poo (which is clearly does when someone pumps the head).

I discovered this morning that when I am pumping seawater into the bowl, I hear the vent on the top of the loop suck air. I almost always use fresh water from a jug to flush urine so I don't hear it then. Now that I understand this is all before the bowl I guess that makes sense.

I routinely pump 5 bowls of hot fresh water through while I'm at the pump out with no resistance - pretty aggressive pumping. The only time I've had water not want to go through was this morning after allowing vinegar to sit in the lines all night for whatever that's worth. Working fine now.

So it would seem there's resistance to anything other than pure liquid. I'm not taking anything apart until I go to the pump out which will be this weekend, and I'm going to try the Head Mistress' muriatic acid test, so I will keep you posted.
Thanks everyone for their ideas - I'm learning a lot!

dbSail is offline   Reply With Quote
Old 21-10-2014, 16:31   #18
Registered User
transmitterdan's Avatar

Join Date: Oct 2011
Boat: Valiant 42
Posts: 4,311
Re: Toilet 'burps' after flushing solid waste-help Head Mistress!

If the vented loop in the sea water side is sucking in air after every pump then that is probably not a problem. That's what it's supposed to do. That loop prevents the system from siphoning water from the sea into the bowl if there is a leak in the sea water pump. So don't close off that vent as the bowl might overflow as a result.

So let's go through how you normally do things. Once you finish pumping you turn off the seawater valve on the hand pump right? Then you pump a little more to get all the water out of the bowl right? After that what happens exactly?
transmitterdan is offline   Reply With Quote
Old 21-10-2014, 16:58   #19
Registered User
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,602
Re: Toilet 'burps' after flushing solid waste-help Head Mistress!

Head Pumps 101 Why just pouring water into the bowl is NOT a good idea Head Sea Water Shutoff Valve & Antisiphon question

Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote

flushing, head, oil

Thread Tools
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
The "Head Mistress" sailstoo Plumbing Systems and Fixtures 6 23-12-2013 04:56
Heads-Solid waste backwashing Bodhi-Time Liveaboard's Forum 6 18-01-2013 16:36
Jabsco Head Bubbles After 'Flushing' Fullmoon Plumbing Systems and Fixtures 4 05-09-2011 08:41
LectraSan Toilet Waste Treatment System BlueSovereign Plumbing Systems and Fixtures 11 13-04-2009 08:44

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:57.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.