Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-08-2012, 15:06   #1
Registered User
 
KatKokomo's Avatar

Join Date: Aug 2009
Location: Asia
Boat: Quasar 50, catamaran
Posts: 79
Seacocks - What Material ?

I am planning to replace my seacocks (Engine intake).
Which one is better, Bronze or Marelon seacocks?
Pros and cons other than the price.

Thanks for your input
__________________

__________________
KatKokomo is offline   Reply With Quote
Old 17-08-2012, 15:17   #2
Registered User

Join Date: Jan 2010
Location: Narragansett Bay
Boat: Able 50
Posts: 3,060
Re: Seacocks, what material?

For engine intake I would suggest marelon. Almost zero maintenance, just pull them apart once a year and check for dirt or weed. None of mine needed more than a wipe down last time I did them.

Bronze would be better for the hot water outlet.
__________________

__________________
savoir is offline   Reply With Quote
Old 17-08-2012, 15:26   #3
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: Seacocks, what material?

Mine are Marelon, but I have an aluminium boat and all the seacocks are on metal pipes that are above the waterline so if one is damaged the boat does not sink.

For a fiberglass boat I would go for bronze ( make sure it's not brass a lot of production boats have bass seacocks) because it's stronger.
__________________
noelex 77 is offline   Reply With Quote
Old 17-08-2012, 15:39   #4
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,376
Re: Seacocks, what material?

I vote bronze, install them and forget them for years!
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 17-08-2012, 15:44   #5
Registered User

Join Date: Dec 2008
Location: Oriental, NC
Boat: Mainship Pilot 34
Posts: 1,429
Re: Seacocks, what material?

Marelon. Exercise them a couple of times a year so they don't bind up and every few years spray with inside with silicone and they will last forever. Bronze are ok, but I have had them fall apart on me after 15 years.

David
__________________
djmarchand is offline   Reply With Quote
Old 17-08-2012, 16:14   #6
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,153
Re: Seacocks, what material?

Bronze. I have had a couple seize up so I got rid of them. One of the boat mechanics at the yard where I haul out says he can't count how many Marelon valves he has had to replace because they were either seized up or the handle broke off.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 17-08-2012, 17:19   #7
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 7,965
Re: Seacocks, what material?

All marelon. Never had any problems.
__________________
belizesailor is online now   Reply With Quote
Old 17-08-2012, 17:25   #8
Registered User
 
cburger's Avatar

Join Date: May 2006
Location: Nyack, NY
Boat: Westsail 32
Posts: 1,548
Images: 1
Re: Seacocks, what material?

Spartan Bronze
__________________
"All men are created equal, some are just more equal than others"
cburger is offline   Reply With Quote
Old 17-08-2012, 17:37   #9
Registered User
 
Astral Blue's Avatar

Join Date: Mar 2012
Location: Sacramento, CA
Boat: Bayliner Victoria 2750
Posts: 313
Send a message via Yahoo to Astral Blue
Re: Seacocks, what material?

I would use Marelon over bronze in a heartbeat! A previous poster referred to Marelon valves failing as indicated to him by a mechanic. I'm willing to bet most if not all of the failures were due to improper maintenance. Regardless of the materials, valves NEED to be exercised on a regular basis. A Marelon valve is no more or less prone to the effects of neglect than a valve of any other material.

One additional advantage offered by Marelon is that it does not need to be grounded because it is relatively dielectric. There is also no need to worry about the effects of electrolysis.
__________________
Ed & Lindsey - Sacramento, CA
1977 Bayliner Victoria "Astral Blue"
MMSI #: 338127697
Astral Blue is offline   Reply With Quote
Old 17-08-2012, 18:01   #10
Registered User

Join Date: Nov 2011
Location: Montegut LA.
Boat: Now we need to get her to Louisiana !! she's ours
Posts: 3,421
Re: Seacocks, what material?

Bronze for us ! I don't want anything holding water out of my boat that I can kick and break !! just my 2 cents !!
__________________
Bob and Connie
bobconnie is offline   Reply With Quote
Old 17-08-2012, 18:14   #11
Registered User
 
bob_77903's Avatar

Join Date: Jul 2008
Location: Rockport, Texas
Boat: Tartan 41 #68
Posts: 304
Re: Seacocks, what material?

Another vote...Spartan Bronze!
__________________
bob_77903 is offline   Reply With Quote
Old 17-08-2012, 19:05   #12
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,166
Re: Seacocks, what material?

I'm glad that you are talking real seacocks and not just a ball valve on a thru-hull.
I prefer a modern bronze ball valve seacock but Marelon and traditional tapered plug seacocks like the Sparton are good as well. All seacocks need to be exercised a couple of times a year to prevent seizing. The Sparton should be disassembled every few years and the tapered plug cleaned and lubricated. Not a big job.

The Apollo ball valve seacocks on my boat are over twenty years old and still work fine. They have had no maintenence except exercise in all that time.

If I were doing it today I'd probably go with the Groco seacock, they have some nice features that the Apollo don't have.

I also really like the new Groco Ball Valve Flanged Adapter which gives you the strength of a seacock and the ease of replacement of a ball valve on a thru-hull.

Groco Flanged Adapter IBVF

__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is online now   Reply With Quote
Old 17-08-2012, 19:22   #13
Registered User
 
cburger's Avatar

Join Date: May 2006
Location: Nyack, NY
Boat: Westsail 32
Posts: 1,548
Images: 1
Re: Seacocks, what material?

I have the old Grocco bronze seacocks with the rubber cones throughout the boat, installed in 1976, no bonding anywhere in the boat, (don't believe in it), the seacocks are as good as the day they were installed, not a bit of corrosion. Serviced a complete set of Spartan seacocks on a friends 1967 Cape Dory like new. In my humble opinion comparing Marlon to quality bronze is like comparing a Timex to a Rolex, no matter how you want to spin it it just ain't the same thing. One of my primary issues with the plastic is it is just not as impact resistant and under the right conditions could break off and cause a real issue. Swaped out one of these last year for a customer, handle had snapped off, personally not the type of fitting I would feel comfortable with.
__________________
"All men are created equal, some are just more equal than others"
cburger is offline   Reply With Quote
Old 17-08-2012, 19:27   #14
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 1,693
Re: Seacocks, what material?

Now that we've cleared up which is the right choice...
__________________
S/V Illusion is offline   Reply With Quote
Old 17-08-2012, 21:07   #15
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Seacocks, what material?

Quote:
Originally Posted by bobconnie View Post
Bronze for us ! I don't want anything holding water out of my boat that I can kick and break !! just my 2 cents !!
Have you ever actually kicked and broken a marelon seacock, or do you just think it will break if you kicked it?

Mark
__________________

__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Reply

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 16:14.


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.