Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-05-2017, 12:01 AM   #1
Guru
 
City: San Francisco
Country: USA
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 677
What would you do with this?

If you look at the nut at the bottom of these two sea strainers, you can see one looks great and the other looks not so great. Being a new owner, what would I do about something like this?

I don't see an active leak, so not sure if this is from something that had leaked in the past. Or maybe it's leaking but very slowly.

Would you just keep an eye on it? Or wire brush it and spray it with something like T9 or a CorrosionX.

Click image for larger version

Name:	IMG_8059.JPG
Views:	107
Size:	171.6 KB
ID:	63511Click image for larger version

Name:	IMG_8058.JPG
Views:	139
Size:	188.9 KB
ID:	63512

Thanks!
Mike
__________________
Advertisement

MichaelB1969 is offline   Reply With Quote
Old 04-05-2017, 12:32 AM   #2
Guru
 
Lepke's Avatar
 
City: Between Oregon and Alaska
Country: US
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 1,615
It could be an old leak. If the strainer is below the waterline, it could have come from the hose. Water could also have come from the lid gasket, run down the side and wicked under. Looks like typical brass/bronze and salt water corrosion. The fitting should be easy to take out and polish if you want. I'd watch it for leaks when running.
__________________

Lepke is offline   Reply With Quote
Old 04-05-2017, 12:46 AM   #3
Guru
 
North Baltic sea's Avatar
 
Country: Finland
Vessel Model: Nordic Tug 37
Join Date: Sep 2015
Posts: 917
Hi Mike,


notice the different clamps, whether there has ever been opened and the seal failed? leakage may also have been the hose up!




I can see in another is a dark spot which is the beginning of oxidation of the metal. Can it be possible that a worse-sighted would have been more cool water, which caused the water condenses inside the boat because of the warm nut. also a hint of the leak is possible. I think you can brush nylon / brass flour off and wrapped him in a cell rubber and adhesive tape around the closed, sometimes open and looking at whether the oxidation does not come to a halt if you access and use sealant or if the rubber gasket change it.










North Baltic sea is online now   Reply With Quote
Old 04-05-2017, 03:51 AM   #4
Guru
 
Simi 60's Avatar
 
City: Queensland
Country: Australia
Vessel Model: Milkraft 60 converted timber trawler
Join Date: Jul 2016
Posts: 2,208
You're taking the piss right? :-)
Simi 60 is offline   Reply With Quote
Old 04-05-2017, 08:01 AM   #5
Senior Member
 
Acheron2010's Avatar
 
City: New Tazewell
Country: United States
Vessel Name: Saoirse
Vessel Model: 1983 Nauticat 44 Ketch
Join Date: Mar 2017
Posts: 151
As NBS mentioned, the two different clamps suggest a previous issue. I'd be inclined to clean it and monitor it until the next haulout, then a complete disassembly cleaning and resealing.
Acheron2010 is offline   Reply With Quote
Old 04-05-2017, 08:35 AM   #6
Guru
 
Shoalwaters's Avatar
 
City: Rodney Bay Lagoon
Country: St. Lucia, West Indies
Vessel Name: "Dragon Lady"
Vessel Model: DeFever 41
Join Date: Feb 2008
Posts: 681
Am I looking at hose-barbs with tapered threads screwed into the bottom of plastic sea-strainers? The plastic threads on one of them may have been stripped and repaired with pipe tape to stop leakage. Leaving aside the possibly stripped threads, I would be concerned that the forces produced by the pipe thread might split the plastic as time passes. If it were on my boat, I feel much more comfortable with bronze Perko-type strainers in this situation - expecially below the water line.

Edit: on examining the second photo more carefully, the "pipe tape" looks more like paper towel! I wold suggest you turn of the appropriate seacock and investigate ASAP.
__________________
Mike
If all else fails, read the instructions
If it ain't broke, don't fix it
Shoalwaters is offline   Reply With Quote
Old 04-05-2017, 08:39 AM   #7
Guru
 
City: kemah
Country: USA
Join Date: May 2015
Posts: 1,135
Quote:
Originally Posted by Shoalwaters View Post
If it were on my boat, I feel much more comfortable with bronze Perko-type strainers in this situation, expecially below the water line.

Me too.
what_barnacles is offline   Reply With Quote
Old 04-05-2017, 09:00 AM   #8
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 8,079
Quote:
Originally Posted by what_barnacles View Post
Me too.
Me 3. Builder cutting corners if below WL.
sunchaser is online now   Reply With Quote
Old 04-05-2017, 11:00 AM   #9
Moderator Emeritus
 
ksanders's Avatar
 
City: SEWARD ALASKA
Country: USA
Vessel Name: LISAS WAY
Vessel Model: BAYLINER 4788
Join Date: Feb 2011
Posts: 4,452
It liiks like thre is was a leak. Nothing more. See if its leaking still and fix it if it is.

Plastic sea strainers are not a problem. I have Raritan plastic strainers for the watermaker and the generator. They are a mature product with a long track record of reliability.

I do not know for sure, but those look like Vetus strainers to me. Vetus is not cheap stuff.
__________________
Kevin Sanders
Bayliner 4788
Seward, Alaska
ksanders is offline   Reply With Quote
Old 04-05-2017, 11:08 AM   #10
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,010
I like the various plastic...not really plastic, strainers.... Forespar, Raritan and Vetus all make nice, robust ones.

They are not the issue.

If the strainer is fine but someone screwed in a non compatable hose barb and it leaks or broke, then fix that.
psneeld is offline   Reply With Quote
Old 04-05-2017, 11:09 AM   #11
Guru
 
twistedtree's Avatar
 
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,946
If it's not leaking, I would do nothing, and just keep an eye on it like everything else in your boat.

but.......

I wonder if that hose nipple is brass. It probably is.

And it's usually not a good practice to use a metal male on female plastic/abs. Too much risk of fracturing the female. The other way around is fine.

So in an ideal world, I would want to see nylon hose barbs in those strainers, or a bronze strainer and bronze hose barb.
__________________
www.MVTanglewood.com
twistedtree is offline   Reply With Quote
Old 04-05-2017, 12:02 PM   #12
Guru
 
City: San Francisco
Country: USA
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 677
Quote:
Originally Posted by Shoalwaters View Post
Edit: on examining the second photo more carefully, the "pipe tape" looks more like paper towel! I wold suggest you turn of the appropriate seacock and investigate ASAP.


I don't see any pipe tape. Not sure what you're referring to.
MichaelB1969 is offline   Reply With Quote
Old 04-05-2017, 02:55 PM   #13
Guru
 
Shoalwaters's Avatar
 
City: Rodney Bay Lagoon
Country: St. Lucia, West Indies
Vessel Name: "Dragon Lady"
Vessel Model: DeFever 41
Join Date: Feb 2008
Posts: 681
This
Attached Images
 
__________________
Mike
If all else fails, read the instructions
If it ain't broke, don't fix it
Shoalwaters is offline   Reply With Quote
Old 04-05-2017, 02:57 PM   #14
Guru
 
City: San Francisco
Country: USA
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 677
That's just white residue.
MichaelB1969 is offline   Reply With Quote
Old 04-05-2017, 07:36 PM   #15
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 2,185
Quote:
Originally Posted by MichaelB1969 View Post
That's just white residue.
Salty crystals? If so it is a weeping leak that you can not see as it dries fast.
sdowney717 is offline   Reply With Quote
Old 04-05-2017, 07:50 PM   #16
Guru
 
City: San Francisco
Country: USA
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 677
Quote:
Originally Posted by sdowney717 View Post
Salty crystals? If so it is a weeping leak that you can not see as it dries fast.


Could be. Next time I am out I will go down and take a look while underway.

Thanks everyone for your comments.

BTW, I don't think they are under the water line.
MichaelB1969 is offline   Reply With Quote
Old 04-06-2017, 12:58 AM   #17
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 9,983
If that white stuff is crystals or some other deposit from water intended to be contained within the pipe and or strainer, the strainer needs to come off to see why it is happening because, it`s not supposed to do that. Sure it`s not some kind of sealing product? If it needs that to seal, same procedure, in my opinion.
__________________

__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Reply

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





All times are GMT -5. The time now is 09:03 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×