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Gary
 
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Default Valves and galvanic action

Gary wrote:
My boat has a tee off the sal****er cooling intakes that can act as an
engine driven bilge pump. The tee is copper pipe with the hoses coming
up from the thru hulls. On the leg of the tee is a brass valve that has
a hose that reaches down into the bilge for pumping.

My problem is the corrosion from galvanic action between the copper tee
and the brass valve that controls the bilge suction hose.

Can anyone tell me how to stop the corrosion of the valve? The one I
have in my hand is almost completely pink because the zinc has
completely dissolved.

Ideas?

Gary

Thanks for all your advice. I replaced the valve with another brass
valve. The bronze ones were twice the size and more than twice the
price and the chap at the store said they wouldn't last twice as long.
At $11, I can afford to change the bilge suction valve every two or
three years.

It is back together.
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Keith
 
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Default Valves and galvanic action

So you couldn't afford a $22 valve? You need to get out of boating.

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Gary
 
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Default Valves and galvanic action

Keith wrote:
So you couldn't afford a $22 valve? You need to get out of boating.

If you carefully read my post you would have noted, it was also twice as
big and wouldn't last twice as long. There is more to value than price.

You need to think.
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Wayne.B
 
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Default Valves and galvanic action

On Thu, 30 Mar 2006 16:03:40 GMT, Gary wrote:

If you carefully read my post you would have noted, it was also twice as
big and wouldn't last twice as long. There is more to value than price.

You need to think.


I think he was.

The point that I heard was "penny wise, pound foolish". Bronze will
last more than twice as long, just about forever in fact. And it will
also mean never having to say I'm sorry to interested parties like
your insurance company.

Failed valves on a boat are a sinking asset.

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Gary
 
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Default Valves and galvanic action

Wayne.B wrote:
On Thu, 30 Mar 2006 16:03:40 GMT, Gary wrote:


If you carefully read my post you would have noted, it was also twice as
big and wouldn't last twice as long. There is more to value than price.

You need to think.



I think he was.

The point that I heard was "penny wise, pound foolish". Bronze will
last more than twice as long, just about forever in fact. And it will
also mean never having to say I'm sorry to interested parties like
your insurance company.

Failed valves on a boat are a sinking asset.

It wasn't a thru hull valve.


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Lew Hodgett
 
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Default Valves and galvanic action

Gary babbled:

If you carefully read my post you would have noted, it was also twice
as big and wouldn't last twice as long. There is more to value than
price.


If you by them books and they eat the covers, not much you can do.

Lew
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Wayne.B
 
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Default Valves and galvanic action

On Thu, 30 Mar 2006 23:55:57 GMT, Gary wrote:

Failed valves on a boat are a sinking asset.

It wasn't a thru hull valve.


Was it not part of your engine cooling water plumbing, and therefore
indirectly coupled to a thru hull of very large capacity?

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