Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 21-12-2008, 09:31   #1
Registered User
 
Christian Van H's Avatar

Join Date: Oct 2008
Location: Princeton, NJ
Boat: Challenger Anacapa 42
Posts: 2,097
Images: 57
Raw water strainers: Plastic, bronze or both?

Hi All! I'm about to order my raw water stainer, which will be mounted slightly below the waterline. I've been told to stay away from all plastic units such as the Raritan (because of my below the waterline mounting). Are combination bronze units with plastic bowls safe? I also like the Buck Algonquin unit... Any thoughts?
__________________

__________________
www.anacapas.com

Here's to swimmin' with bowlegged women!
Christian Van H is offline   Reply With Quote
Old 21-12-2008, 09:51   #2
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
Are combination bronze units with plastic bowls safe? I also like the Buck Algonquin unit... Any thoughts?
I'm not so sure I would categorically eliminate all plastic strainers. Many of the Gorco strainers use plastic components in their strainers but I think they are well made.

We use a Vetus raw water strainer that is "plastic" not sure of the type but it is located above the water line. It may be possible to use one and raise the level of the strainer. Nothing requires the strainer to be below the water line. I would agree if you are below the waterline it would not be a good choice.



The bronze below the water line are still very popular and would be a good choice.
__________________

__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 21-12-2008, 09:56   #3
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,152
I would feel a little nervous about having a plastic strainer below the waterline. Strainers are probably one of those places where one should not cut corners in order to save money. I think sticking with time proven designs and materials is worth the piece of mind it provides.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 21-12-2008, 13:27   #4
Registered User
 
Jmolan's Avatar

Join Date: Dec 2007
Location: Mexico/Alaska/Oregon
Boat: 34' Searunner Tri
Posts: 712
We used plastic on many things in the big boat for years in the engine room untill the insurance guys came along and put a stop to it. I guess the only thing that would concern me (and them) is a fire situation, where you may suddenly be fighting more than a fire....:-)
__________________
Jmolan is offline   Reply With Quote
Old 21-12-2008, 13:37   #5
Registered User
 
Christian Van H's Avatar

Join Date: Oct 2008
Location: Princeton, NJ
Boat: Challenger Anacapa 42
Posts: 2,097
Images: 57
Quote:
Originally Posted by Jmolan View Post
I guess the only thing that would concern me (and them) is a fire situation, where you may suddenly be fighting more than a fire....:-)
Good point! I guess one would win eventually!
__________________
www.anacapas.com

Here's to swimmin' with bowlegged women!
Christian Van H is offline   Reply With Quote
Old 21-12-2008, 14:26   #6
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
If you have a fire in the engine compartment the hoses are going to melt so if the strainer is plastic what difference does it make? We have used/installed Groco strainers for years with plastic and never had an issue or a surveyor or insurance issue. What "insurance guy" put a stop to plastic in the engine compartment. If your boat is fiberglass it is surrounded with plastic, OK technically not, but you get my point. Rubber fuel and water hoses will melt so what does insurance say about that?
__________________
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 21-12-2008, 16:41   #7
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
I like the benefits a lot of the plastic ones have as well, like the entire lid being clear plastic for easy inspection.

Being a fraction of the price is good as well

Whitworths Marine: Raw Water Intake Strainers - 40mm Hose

These are very similar to what I have
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 21-12-2008, 16:44   #8
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
The Groco are still mostly bronze with a plastic basket. Many of the new boat builders are putting all plastic strainers on their new $750,000.00 boats so not sure why someone would come in and say that is a safety hazard.
__________________
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 21-12-2008, 16:57   #9
Registered User
 
Jmolan's Avatar

Join Date: Dec 2007
Location: Mexico/Alaska/Oregon
Boat: 34' Searunner Tri
Posts: 712
yep

Quote:
Originally Posted by Chuck Baier View Post
If you have a fire in the engine compartment the hoses are going to melt so if the strainer is plastic what difference does it make? We have used/installed Groco strainers for years with plastic and never had an issue or a surveyor or insurance issue. What "insurance guy" put a stop to plastic in the engine compartment. If your boat is fiberglass it is surrounded with plastic, OK technically not, but you get my point. Rubber fuel and water hoses will melt so what does insurance say about that?

Chuck. It was Lloyds....it's big boat stuff, I may be off base here.

The boat I am referring to is a 125' offshore Bearing Sea trawler. The plastic I was referring to is 6" sced. 80 PVC we were using for seawater recirculation for refrigeration of 500,000 lbs. of fish. To melt that would cause a big leak...:-) We also installed manual remote wire shut offs to the fuel supply the Eng. room for the same reason. There is no rubber hoses in the Eng. room. All 3 aux. and main engine are steel piping. We deal with 3K psi Hydraulic pressures along with a lot of other nasty stuff that can cause fires.
Anyhow, different boats need different solutions.

This is a pic of us in a haul back. The is 150 tons coming up the ramp. (All of it is done with synthetics by the way) but no thread drift
Attached Thumbnails
Click image for larger version

Name:	P1240145.jpg
Views:	179
Size:	511.2 KB
ID:	6386  
__________________
Jmolan is offline   Reply With Quote
Old 21-12-2008, 17:06   #10
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
You won't find too many folks here with those kinds of set up or issues so it probably really does not apply to the original question.
__________________
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 21-12-2008, 18:59   #11
Registered User
 
Christian Van H's Avatar

Join Date: Oct 2008
Location: Princeton, NJ
Boat: Challenger Anacapa 42
Posts: 2,097
Images: 57
Naw, but it was a cool picture! Thanks, Chris
__________________
www.anacapas.com

Here's to swimmin' with bowlegged women!
Christian Van H is offline   Reply With Quote
Old 22-12-2008, 08:02   #12
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
I think the material "Plastic" has a lot of variations. Gorco uses lexan components in it's below the water line strainers and they really are very solid gear. They have a nice one with an integrated seacock as well. being able to see inside the strainer is a plus.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 22-12-2008, 08:49   #13
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,152
The Coasties require metal thru-hull valves on Subchapter-T vessels. The theory is that plastic valves would melt in a fire.

On an aluminum hull, I had to thread stainless steel valves onto aluminum pipe nipples. The electrolysis would eat up the aluminum threads in about two to three years if ignored. It did not matter that a corroded pipe nipple had a greater chance of sinking a boat than a melted plastic valve.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 22-12-2008, 08:57   #14
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
David, you are correct but this does not apply to pleasure vessels such as Christian's which ask the original question. We are not discussion commercial vessels, at least I did not think so. To my knowledge the Coast Guard does not inspect pleasure vessels for these kinds of issues.
__________________
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 22-12-2008, 09:08   #15
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,152
I realize that. I just thought I would throw in that little story.
__________________

__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Reply

Tags
raw water

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
Raw-water to fresh-water cooling conversion Catamount Engines and Propulsion Systems 31 06-05-2012 08:29
Strainers on Raw Water Intake Remedy Plumbing Systems and Fixtures 13 30-01-2010 20:45
raw water strainers seaweedII Plumbing Systems and Fixtures 3 21-12-2008 07:23
Raw (Seawater) Strainers for HVAC etc. use donw_s11 Plumbing Systems and Fixtures 12 16-05-2007 17:49
sail drive raw water strainers schoonerdog Construction, Maintenance & Refit 2 17-04-2007 11:25



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:22.


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.