I recently replaced a sea-water hose for my A/C. Wow, I discovered that the barb (hose connector) from the sea-cock was made of Brass(it broke off). I am told that bronze is the metal of choice for below waterline use? Is this true? If so why is hunter using brass? I've checked and it looks like all my sea-cock barbs are made of brass.(this is from a 1998 h450 #177)
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Brass/Bronze
As I understand it, Bronze is higher up on the table of metals and less subject to galvanic corrosion. However, I believe that brass is ok if not fastened to other metals. The thruhulls on your boat are probably bronze. Yes, Bronze is the way to go. Why Hunter uses brass is probably the same reason they put the holding tank vent in the cockpit, under the helm seat, of my Legend. When checking all of your brass barbs look for the telltail pink coloration. That is a sure sign that they are failing. I would definitely replace all of them. If brass is chosen I would use the nickle plated version. As long as the nickle plating is not compromised it will be ok, but should be regularly inspected. I'm sure that someone who is up on the intricacies of metal corrossion will respond to you inquiry with a more technical explanation. Hope this helps a little, Pat
As I understand it, Bronze is higher up on the table of metals and less subject to galvanic corrosion. However, I believe that brass is ok if not fastened to other metals. The thruhulls on your boat are probably bronze. Yes, Bronze is the way to go. Why Hunter uses brass is probably the same reason they put the holding tank vent in the cockpit, under the helm seat, of my Legend. When checking all of your brass barbs look for the telltail pink coloration. That is a sure sign that they are failing. I would definitely replace all of them. If brass is chosen I would use the nickle plated version. As long as the nickle plating is not compromised it will be ok, but should be regularly inspected. I'm sure that someone who is up on the intricacies of metal corrossion will respond to you inquiry with a more technical explanation. Hope this helps a little, Pat
brass and bronze
I don't know why Hunter used brass on your boat. I guess corners have to be cut somewhere to make them the good value they are. I can't say I am an expert, but I have had through-hulls replaced in the past and this is what I came out of the experience with- I too believe that bronze is the way to go on a boat. There is a big BUT though. Mixing the two metals can be worse than using all brass. If you have an existing brass through-hull, putting a bronze fitting in it can promote corrosion on both metals. Your seacocks throw in a third component to consider, most I have seen are bronze. I would match the metals when you replace the barb, and if your through hull is brass, replace it with a bronze through hull next time your boat is hauled out. Again, I am not an expert, but this info comes from reliable well informed sources.
I don't know why Hunter used brass on your boat. I guess corners have to be cut somewhere to make them the good value they are. I can't say I am an expert, but I have had through-hulls replaced in the past and this is what I came out of the experience with- I too believe that bronze is the way to go on a boat. There is a big BUT though. Mixing the two metals can be worse than using all brass. If you have an existing brass through-hull, putting a bronze fitting in it can promote corrosion on both metals. Your seacocks throw in a third component to consider, most I have seen are bronze. I would match the metals when you replace the barb, and if your through hull is brass, replace it with a bronze through hull next time your boat is hauled out. Again, I am not an expert, but this info comes from reliable well informed sources.
this was all factory work !
As far as I know this was all factory work. I purchased the boat new in 98 .
As far as I know this was all factory work. I purchased the boat new in 98 .
Check out this factory work
Our '86 H34 was delivered new, with GATE VALVES! Talk about cutting corners.
Our '86 H34 was delivered new, with GATE VALVES! Talk about cutting corners.
Yeah Fred, . . .
but I bet they were attached to bronze thru-hulls.
Cannot believe that Hunter ever used brass for thru-hulls. Are you sure Brian?
but I bet they were attached to bronze thru-hulls.
Cannot believe that Hunter ever used brass for thru-hulls. Are you sure Brian?are you sure.
Brian: Are you sure that the dealer didn't do this. A lot of this stuff happens during the commissioning process (ask your dealer). Regardless, you should change it out. Cheap fix, but it could have been a disaster.
Brian: Are you sure that the dealer didn't do this. A lot of this stuff happens during the commissioning process (ask your dealer). Regardless, you should change it out. Cheap fix, but it could have been a disaster.
no brass please!
Do not use any bronze/brass combos anywhere or use brass in any water systems anywhere on the boat.One of my customers flew into town after not being on his boat for some time.He got on board and heard a hissing sound, after a long search he traced the noise to a length of brass pipe attached to a bronze through hull.Pulled it out and it looked perfect, upon looking into the pipe he was shocked to learn that the whole thing was rotted from the inside out.You could take the 3/4 pipe and collapse it with finger pressure.Perfect outside,rotten inside, from two dissimilar metals and electrolysis.He told me that if he would have come the next weekend he was sure the boat would have gone down. Get the brass out! ED.
Do not use any bronze/brass combos anywhere or use brass in any water systems anywhere on the boat.One of my customers flew into town after not being on his boat for some time.He got on board and heard a hissing sound, after a long search he traced the noise to a length of brass pipe attached to a bronze through hull.Pulled it out and it looked perfect, upon looking into the pipe he was shocked to learn that the whole thing was rotted from the inside out.You could take the 3/4 pipe and collapse it with finger pressure.Perfect outside,rotten inside, from two dissimilar metals and electrolysis.He told me that if he would have come the next weekend he was sure the boat would have gone down. Get the brass out! ED.
Brass doesn't sound right
I'd double check that; brass if there were hundreds of boats out there with factory brass I'm sure we'd know about it by now. As for the gate vales, many old production boats came with those from the factory. Alot has changed in boatbuilding in 17 years!
I'd double check that; brass if there were hundreds of boats out there with factory brass I'm sure we'd know about it by now. As for the gate vales, many old production boats came with those from the factory. Alot has changed in boatbuilding in 17 years!
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