Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-10-2011, 14:39   #1
Registered User

Join Date: Aug 2010
Location: Seattle, WA
Boat: Dix Caribbea 30'
Posts: 59
Sink and Shower Drainage

PO showered in the boat but without a sump or drain pan water simply ran into the bilge and eventually pumped out. This created obvious sanitary issues as well as clogging the pump and float switch.

There's very little room beneath the sole but I'll figure out how to add a pan and dedicated shower pump. For shower drainage, is it okay to T into the sink drain? Sink drain has its own dedicated thru hull below the water line. I realize I'd need a loop vented well above the highest point of heel or perhaps a check valve. Seacock is kept closed when I'm not on the boat.
__________________

__________________
erict is offline   Reply With Quote
Old 07-10-2011, 15:22   #2
Registered User
 
Matt sachs's Avatar

Join Date: Jul 2010
Location: East Tennessee
Boat: 1989 50 ft Roberts
Posts: 859
Images: 18
Re: Sink and Shower Drainage

I'm planning to put all the gray water into a common sump and pump it all out above the water line. Extra holes in the hull underwater seem so.........scary.
__________________

__________________
Matt sachs is offline   Reply With Quote
Old 07-10-2011, 15:35   #3
Registered User

Join Date: Aug 2010
Location: Seattle, WA
Boat: Dix Caribbea 30'
Posts: 59
Re: Sink and Shower Drainage

The hole is already there. In fact, I'm about to haul the boat to add a backing plate and replace the seacock.
__________________
erict is offline   Reply With Quote
Old 07-10-2011, 17:02   #4
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
Re: Sink and Shower Drainage

Not a problem taping into the sink drain thru-hull. Just keep it as close as possible to the thru-hull. Chuck
__________________
Chesapeake Bay, ICW Hampton Roads To Key West, The Gulf Coast, The Bahamas

The Trawler Beach House
Voyages Of Sea Trek
AnchorageGuy is offline   Reply With Quote
Old 07-10-2011, 17:06   #5
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,311
Re: Sink and Shower Drainage

if you tap into the sink drain don't use a high capacity pump!

but why wouldn't you install a new outlet above the water line, can do this even with the boat in the water
__________________
jobless, houseless, clueless, living on a boat and cruising around somewhere
sailorboy1 is offline   Reply With Quote
Old 07-10-2011, 22:47   #6
Registered User

Join Date: Aug 2010
Location: Seattle, WA
Boat: Dix Caribbea 30'
Posts: 59
Re: Sink and Shower Drainage

If there's not a fundamental issue with shower and sink discharges sharing a thru hull then I'd prefer to avoid adding yet another hole in the boat.
__________________
erict is offline   Reply With Quote
Old 07-10-2011, 22:55   #7
DRS
Registered User
 
DRS's Avatar

Join Date: Jun 2009
Location: Vancouver BC
Boat: Lagoon 380
Posts: 351
Images: 7
Re: Sink and Shower Drainage

The issue will be if the thru hull does not have the capcity to handle the flow from your shower sump pump it will back up the sink drain and over flow the sink.

You don't want to know how I know this
__________________
You can sail anywhere on the planet and never be more than 7 miles from land - it might be straight down, but its never more than seven miles
DRS is offline   Reply With Quote
Old 07-10-2011, 23:02   #8
Registered User

Join Date: Aug 2010
Location: Seattle, WA
Boat: Dix Caribbea 30'
Posts: 59
Re: Sink and Shower Drainage

I see how that would be a problem. If I set the pump to cycle on relatively quickly then regardless of the pump capacity (within reason) the volume of water won't be enough to overflow the sink.
__________________
erict is offline   Reply With Quote
Old 07-10-2011, 23:21   #9
Registered User
 
Pato's Avatar

Join Date: Mar 2011
Location: Sidney b.c
Boat: Ct 37
Posts: 162
Or you could use one of those sink plugs that twist and lock no more water coming up the drain
__________________
Pato is offline   Reply With Quote
Old 08-10-2011, 17:50   #10
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Sink and Shower Drainage

Just make sure the sea cock is open when you turn on the pump...
__________________
DeepFrz is offline   Reply With Quote
Old 09-10-2011, 09:52   #11
Registered User
 
Viking Sailor's Avatar

Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35 - s/v Feeling Good
Posts: 1,074
Re: Sink and Shower Drainage

Have you consider T'ing into the bilge pump discharge line. The bilge discharge should be above the waterline. To keep the bilge dry the bilge pump should have a check valve of some type. This valve will keep the shower water from flowing into the bilge.

__________________
Viking Sailor is offline   Reply With Quote
Old 09-10-2011, 09:59   #12
Senior Cruiser
 
osirissail's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
Images: 2
Re: Sink and Shower Drainage

The sink drain line is probably the closest and easiest to tap into. Just try to "Tee" into it as low as possible from the sink. I seriously doubt that the volume of water from a shower will overwhelm the sink drain and tapping into it low gives you a vertical "head" to alleviate shower water from backing up into the sink.
- - And the other way around - ensure you have a check valve or something in the shower drain package to prevent sink drain water from backing into the shower.
__________________
osirissail is offline   Reply With Quote
Old 09-10-2011, 10:11   #13
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,770
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Sink and Shower Drainage

my ericson has shower into bilge--i found if i used a lil vinegar or even bilge soap there was no smell..i diluted the soap and flushed with fresh water once after each shower. kept bilges clean and fresh.
worked great. i have a sump in this formosa and i flush with vinegar mebbe about once per month for cleanliness.
is amazing what a lil follow up to showering does in the old system of no sump......
zeehag is offline   Reply With Quote
Old 09-10-2011, 10:34   #14
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,363
Re: Sink and Shower Drainage

On my 30 footer The shower was just routed to the bilge. I had a trap to pickup any debris and it worked quite well. In fact the detergent helped keep the bilge clean! No pump, no issues.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 09-10-2011, 19:24   #15
Senior Cruiser
 
osirissail's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
Images: 2
Re: Sink and Shower Drainage

If somebody has long hair and likes to keep it "glorious" then invariably there will be a lot of hair working its way down the shower drain. Unless there is a shower box or trap for such stuff, you may be jeopardizing your main bilge pumps. Not a good idea.
__________________

__________________
osirissail is offline   Reply With Quote
Reply

Tags
shower

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:48.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.